2003 Dodge Ram Intermittent A/C Blower Replace Ignition Switch

[@jonathanhenderson5786]

Bought a blower fan resister and didn't fix my fan. I'd hit a bump and fan would stop blowing. Clicked on your video and watched you move the tilt steering up and my fan came on. Thanks great video. Now I know where to go from here

[@ChrisJohnston80]

Your video save me about $650 off what the dealership wanted. They wanted to replace the switch, blower motor and blower motor resistor. I knew the blower motor was fine, because I could jiggle and hold the key tumbler just right and get the AC to blow cold air as fast as I wanted. I bought a switch off of Rock Auto and replaced it in about 20 minutes for about $30 or so. Thanks.

[@jbrndl]

I considered the ignition switch after replacing the control module. After running across this video I went out and put the key in it and shook it around and still nothing. Then, I tilted the wheel and it came on. Tilted the wheel back up and it shut off. Either it is the ignition switch or the connection to it, but either way I will take it apart and replace the switch and connectors as needed. Appreciate this video! 2004 Dodge Ram Motor Blower

[@johnnyyahoo9867]

Thanks for the instructions. Since I had my center dash apart, I thought I left a plug loose for fan control... until I found this video. I did the AutoZone part - # LS1144. 30 bucks or so. No major surprises. Keeping the screws straight - which ones go where - is kind of important. Removing the switch from the harness required sliding two locking mechanisms - I missed that in the vid. I had rotate the switch position with a flat blade screwdriver to be in the same position as the one I pulled. I took my old switch apart and saw no obvious issues. I'd bet that some clearances on plastic parts becomes a little out of spec with wear. Thanks! University of KZbin makes us all more effective.

[@jamessullivan536]

My ignition switch went out today on my 2003 Dodge Ram 1500,air conditioner stopped working and a crackling sound from the steering column this video got me through it thanks greenrumour

[@davidliebetreu5575]

This video has saved me time and alot of cash. This fault in design with with the ignition switch appears to be quite common after reading all the posts. Without this video I would have had no clue as to finding the cause of this problem or how to fix it. The ignition switch cost me $23.00 at CARQUEST auto parts. I'm sure this fix would have cost hundreds of dollars at the dealership. I would have had to have left my truck and missed work.This was a 20 min. fix, thanks for you video.

[@oreo-of6jq]

Thank you for this very helpful video.We went last winter with no heat in Canada BURRRRR! . I changed the blower controller just before last winter underneath the dash on the passengers side twice.The first time it all worked for about a week then it melted together with the plug.Turned out the plug wires were loose had to change the plug and wires under there as well. The second time I fixed that proper with a new controller ( AGAIN ) and a plug with new wires after soldering all the 4 plug wires very well.Then wile I was attaching the new unit it worked on a test then when I was finished soldering and put it back in NOTHING ARRRRRGGGG ! Then I found that moving the key made the blower turn off and on but that even stopped after a while driving while holding the key in the exact spot really was lame and did not last long till even doing that did not work.The guy at the garage wanted $ 250 to change this ignition switch. Thanks to your help I bought the part for 50 bucks ( CANADIAN PARTS WE PAY TWICE AS MUCH AS Y'ALL ) explain that? I followed your instructions and an hour later it now works like a dream ! Thank You !

[@soloalpinist]

I want to thank you for your EXCELLENT video... it just saved me a ton of work and expense! I have a 2002 Dodge Ram 1500 Van and this ignition switch was the problem. The procedure was virtually identical to the one you show for your 2003 truck. Your video is simple, concise and easy to follow. Apparently this is a very common problem in Dodges over numerous years/models. It's a damn shame they can get away with perpetuating crap parts like this. Thank you again for your help... it's nice to have heat again! :)

[@gordonmathis4915]

I have a 2004 RAM 2500 however, all the pieces and parts look very similar. I was convinced at first it was a shorted/grounded wire in the harness. As I watched this it made perfect sense as the problem was intermittent at first and then the blower just stopped working. Thanks Much. Going to the parts store now!

[@bradmetcalf5333]

I went a week with no ac. Moved my tilt wheel up and it started working. I was able to limp along for about a week moving the tilt wheel until the fan kicked on but then complete failure. I will be replacing the switch tonight. Thank you for the video.

[@devospage6639]

My 2003 Dodge 1500 ignition/blower switch just went out after 21 years changed it today. Using this video kudos, followed every step of the way. It was a big help. Thanks for posting the video.

[@MississippiTreasureHunter]

Mines doing same thing. You don’t have to reprogram keys changing this part do you?

[@david84ss]

This must be a common issue. My 03 blower cut off while the windshield was frosting up. Had to pull over. Started working again a few minutes later, this looks like the culprit. Thanks

[@kristonhort]

Finally!!!! It worked!!! I never had an intermittent fan, but dead. I never bought a new one just made the contacts connect by making them a U shaped with pliers. A new one may not do the trick if the female ends are too worn. If this doesn't work, you can remove the fan with three screws and test it to a battery. If the fan works, check fuses.

[@justinbarnes5498]

Thanks for the video. My blower motor became intermittent, then stopped altogether. I had low voltage at the blower motor connector (7.5V) - did some digging and realized that many have had the same issues, but oddly enough relating to the ignition switch modules. I got mine apart (thanks to your video) - and found severe scarring on the top two pins (blower motor). The female blue connector in the dash also was charred in that area, so I was concerned that it would not reconnect solidly when installing the new ignition module. Bought and installed the new module, and it worked, however after a few minutes began to intermittently die off. When adjusting the tilt wheel, I could make it come on and off. What a horrible designed location for this part. Now I think this new unit will most likely not have a great connection due to the movement of the steering column (and other vibrations) - and start to overheat again, thus taking me back to square one. Ughh,

[@greenrumour]

Yes you'll likely want to get a wiring harness

[@justinbarnes5498]

@@greenrumour thanks.... Is that wiring harness easily obtainable? I wonder if it plugs in to the ECM and routes back through the firewall? Hoping I don't have to cut or splice any wires.

[@greenrumour]

@@justinbarnes5498 The harnes I'm referring to is Available through the dealer with both ends However you can get an after market one end only for the one hot end that gets bad towards the Ignition switch and it comes with little butt connectors and shrink wrap I know Napa sells it and other sources sell it as well

[@justinbarnes5498]

@@greenrumour great! Thanks for taking the time to respond. I will try and find one soon. Take care

[@glenmternes3313]

Thank you so much for the information. You saved me a bundle, I was thinking I needed a new fan motor. That would have been a waste of money for sure. You Rock!

[@jakedaniels7546]

Great video. Running into this same problem among other oddball problems with my truck that all seem to be symptoms of this bad switch. Ordered and will be following this video to replace. Thanks!

[@flexk9996]

Great video, thank you for taking the time to create this video and educating all of us on how to fix this problem.

[@mikeobrien9145]

Thanks for this video. I had no idea what the problem was and your video was most helpful. I replaced the switch and everything works like it should. Great information. Thanks again.

[@Scott-rb7yc]

Your video helped me fix my 2001 Dodge Dakota with the exact same problem...same ignition setup. Thanks

[@ejzabojnik834]

Fantastic video. I followed everything in your video including the beer in the drink holder and now the blower motor runs like a champ without having to tilt the steering wheel up and down to make it come on. Thanks.

[@greenrumour]

Glad it worked. Cheers!!

[@xtxpest]

Thank you for the Vid on this because I had the same problem on my truck for over a year and talked to different mechanics and was told that it would cost me between 350 and 550 to have this problem fixed. I watched your video and replaced the switch myself in 20 minutes for 28 dollars for a new switch at autozone . Problem Fixed thank you

[@ABALLMEDIC]

Right on man! This was the problem, 100 degree heat when mine went out. I almost bought a $200 tumbler and recoded keys. $30 part and it took 15 mins! You rock thanks for this.

[@fosterphillips6370]

Thank you for the instructions. I had the same problem and the fix was quick after watching you walk me through it.

[@greenrumour]

Thanks for the positive feedback. That makes it well worth the effort.

[@edlewis8634]

Great video.My 04 Dodge 2500 had same issue.Your video helped me fix the problem with the blower not working.New ignition switch solved my problem.

[@danreeves1973]

Thank you so much for this video. Fan on my sons truck quit, we checked the resistor and fan first, then changed out the switch as you recommended, works great now.

[@MaddieDazey]

Thanks much! A "friend" of mine in the business quoted me $217.00 to do this. Thanks to your video it cost me $30 and about 20 minutes.....

[@bravo6601]

Awesome video man!!! Im going to replace mine today!!! I can only imagine how much money and headache you have saved everybody ... keep up the good work

[@dragonsmugla]

For the last year I had to reach back to the switch and wiggle it every now and the to get the blower to work. It got progressively worse until the blower would not work at all regardless of the amount of wiggling. Replaced switch and blower works just fine. Was worried initially as there was absolutely no indication of overheating or burning. Maybe a loose connection in some cases may cause overheating. Either way, it fixed the problem. Thanks for the video as nobody I've talked to had heard of this fix. Including 1 shop and the auto parts store.

[@alphareaper6283]

Thanks man that was really helpful I was about to lose my mind trying to figure out why my fan wasnt blowing thanks again.

[@repeters1]

Thanks for the video. My 04 ram had a few problems that this cleared up. A/C motor off & on when tilting the wheel and my dome / map lights didn't work unless you put the light switch up in the dome position. Now the lights work anytime I hit them and no more a/c motor cut out when tilting the wheel. Thanks again!

[@erikkovacs3097]

Gotta love those Chrysler electrical engineers. Instead of powering heavy loads with a relay like a sane person would, they chose to be mavericks and run it through the ignition switch with a half dozen other circuits. Suddenly I understand why Chrysler went bankrupt in 2008. Sometimes I romanticize what it would be like to meet the people that design this crap. I imagine my hands would be around their throats within minutes yelling "DIDN'T YOU TAKE A GOD DAMNED BASIC ELECTRONICS CLASS!!!??? WHAT IN THE HELL MADE YOU THINK THIS WAS A GOOD IDEA? DIDN'T YOU THINK A BASIC TRIED AND TRUE RELAY WOULD HAVE BEEN A BETTER IDEA THAN A CONVOLUTED IGNITION SWITCH THAT HAS TO BE ENGINEERED TO TAKE THESE LOADS? HAVEN'Y YOU EVER HEARD OF THE ACRONYM K.I.S.S? KEEP IT SIMPLE STUPID!!!" A man can dream right?

[@clearyworley7513]

Awesome video helped me greatly on my 05 2500ram diesel and fixed my intermediate ac and the ac staying on with the key off

[@Jimbojimz]

Changed mine this afternoon. Great video. You helped me get it done in no time. Thank you.

[@ScoreSCM]

James Hunter how you order the part? Whats the name on Amazon or ebay? I cant find it

[@Jimbojimz]

Score SpaceCatMusik I bought it from Autozone.

[@ScoreSCM]

James Hunter just go and ask for the ignition switch? Thank for the answer

[@Jimbojimz]

Score SpaceCatMusik Yeah. You could probably even order it online and have it shipped to your house.

[@ScoreSCM]

James Hunter thank you so much man i got now ls1144 duralast

[@ronmartinson2045]

Thanks for the video, it seems to have cleared up the issues I had(blower would turn on when truck was on). There is one thing I would like to note in my experience. I had to take my key and rotate the new ignition switch section where it mates up to the ignition cylinder (not sure of verbiage, hopefully it makes sense). The plastic insert was slightly rotated compared to the switch I pulled out of the truck so the new switch would not mate up to the lock cylinder properly until it was turned.

[@mancilln1971]

Hey, just had my 16 year old son do this in his 2002 ram 1500 6 cylinder single cab truck. Thanks for the video it helped him out alot..!

[@bpulley1]

Just replaced my ignition switch with your videos help. SO glad you put this up. Thank you!!

[@you831able]

Same problem! Pretty soon I will be able to overhaul my 2003 ram. I would be upset, but it's enjoyable to be able to fix each problem as it comes.

[@jasonhutchinson5177]

Best instructional video i have seen .. NO BS .. thanks brotha .. I was on the right track and I got a mirrored light. I saw the top wire blackened and thought it might be a good idea to see what "the collective" have experienced. Awesome man ... Will be fixed tomorrow.... Jason

[@grahamalmond4679]

Holy Hell I have been having this issue with the ignition/fan for a while now, and could not find a damn thing. THANK YOU

[@pelochas1029]

Excellent. I just replaced it and now AC fan is working. Little worried because the switch didnt show any signs of burn or heated. It did work and thats all that matters. $30. Thanks

[@greenrumour]

Hey Glen, I would agree the fan could be dragging and causing a higher than normal current draw. However the connector to the ignition switch must be in good shape to rule out that as a possibility. If you look into the terminals and they are charred than they should be replaced. If the wires have burned to a hard crisp just past the connector than its possible it is too crusty to make a clean contact and the entire section should be replaced. OEM cord has plug at each end. Replace bad switch.

[@mgauvin8810]

THANKS!!! I almost spent $90.00 on an ignition cylinder thinking that was the problem, due to my wife's 20# keyring. Great job on the video, you are awesome!

[@jpfisher1952]

Thanks for the video. Same thing was happening on my truck. Followed your video and its fixed.

[@greenrumour]

Torx drivers or star drivers are available at any hardware store or auto parts store Harbor freight tools as a budget option.

[@troytaylor623]

greenrumour - you rock! $26 part and 15 mins later my fan is blowing again! :D

[@MrShep75]

Thank you for this video. This was very easy and it cost me $28.88 to fix.

[@n4vad3983]

Thank you so much for doing this video. My 2003 was doing the same thing. Watched the video, got the part $28.00 bucks, installed it just like you said and works perfect. Great job and cudo's....... GT

[@kodyslays]

Installed the new one? Now I have cold ac thanks for uploading this man saved me hundreds

[@ilovedieselsmoke]

Thank you for well thought out video, you made my repair much easier and less costly!

[@Farmor4x4]

Amigo tengo una DodgeRam 2500 3era generación. Año 2006 la cuál el control del mando del aire acondicionado empezó a parpadear la luz de encendido y se apagaba la luz del botón del aire y se apagaba el compresor y dejaba de echar aire frio. Que hacía yo apagaba el carro y encendía nuevamente y así el aire prendía bien por unos minutos, hasta que se pagaba nuevamente. Eso duro así como 3 días,.. hasta que la luz más nunca prendió y el aire el compresor no comprimía, es decir no prendía. Medimos la presión del sistema con el manómetro y nos marcaban 110 psi completamente cargado. Y aún así el cluth del aire no arranca. El mando funciona todo bien menos el lado de encender el compresor del aire ,sabes el botoncito que uno oprime luego de prender la Manilla pero no acciona. Colocamos un puente con cable desde el compresor ala batería y el compresor funciona bien y enfría. Pero claro el mando de control está muerto. Podrías tener una posible solución. Ami problema. Me ayudas. ?? También tiene un problema en que la consola del techo que marca temperatura y uso de combustible disponible dejo de funcionar. Lo que si no logré ubicar los relex de este carro,. Solo tiene un acaba de fusibles y son puros fusibles pequeños. Es un módulo TPIM Otro problemita es que dejó de funcionar las luces delanteras, cuando prendían las altas no prendían las bajas o viceversa, entonces hicieron un puente de un bombillo a otro para que solo funcionarán las luces altas, las bajas no me funcionan.

[@stephenfair1582]

This was my issue and fix. Thanks for the video.

[@moodberry]

I know you made this in 2012, but I have the same exact year truck and the same exact issue. In addition, I went to my truck this morning and found out the batteries were dead. I suspect the switch stayed on and drained them. So I will be replacing this ASAP. One question I have though...What about the key side of things? You didn't explain that at all.

[@harveygilmore2482]

Great video my wife was able to change ours what a easy fix thank you....

[@aceofpace1378]

did anyone have theirs where the a/c light stayed on when the blower was in the off position? Normally (when the blower is acting right) my a/c light will turn off when i put the blower in the off position. My blower will randomly come on while driving and usually stay on.

[@stuckinadazzee]

Yeah mine is doing that, replaced ignition control switch bud didn’t fix the problem.

[@aceofpace1378]

@@stuckinadazzee I just figured mine out. Next time your blower won't come on, tap on the bottom of the blower motor. Its directly under the glove box. Apparently it has connections that once a little corrosion is on them, it just stops . I hit the bottom of mine with a wrench and it kicked on.

[@stuckinadazzee]

@@aceofpace1378 Tapped the blow yesterday and it kicked right back on. Thanks for the tip. I'm pretty sure I replaced the blower motor a few years ago.

[@aceofpace1378]

@@stuckinadazzee awsome! Glad to help bud

[@aceofpace1378]

I'll be putting a video with this tip on my channel when I replace my blower lol

[@joserubio8262]

Wow easy job I pay $40 to change that now I know how to change it thank you for this video

[@joegenova51]

Thanks this is been a big help fan is been going on and off for awhile someone looked at it and told me it was the heat moudhle 70$ later it is not but it seems that this is the problem thanks for posting it great help!! Thanks

[@greenrumour]

I was able to remove the blue plastic face from the female plug it has 4 catches on the sides and I got a good look at mine. It looked perfect inside. not chard or blackened at all. only the blue plastic was burnt. If the terminal is burnt or the wire than you might want to replace that section of wire harness. I believe its about 20 inches long and plugs into another similar plug down by the pedals.

[@kerageous1502]

Yes yes! That has to be it! My ignition has been getting stuck in the counter clockwise movement. I’m guessing im gonna find some time

[@Honkerdown]

Just installed the ignition switch on my 2004 Ram 2500. Only took about 15 minutes, but I already had the kick panel removed as I had not reinstalled it after diagnosing the problem.

[@russelldavis9375]

Wow, helped me figure out my problem in under a minute. Thanks!!

[@user-tk3rm2yc2v]

Does anyone know the name or have a diagram of the 2 plugs shown at 4:17 i need to re pin these plugs but haven't been able to find any info on them. It would be a huge help.

[@schleichr]

I have a 2004 1500 5.7 Hemi... I have the exact opposite problem. My fan won't turn off when I turn the key off... Really sucks coming out in the morning and it won't even click! Going to give this a shot.

[@greenrumour]

The short answer is yes. A bad wire harness and or ignition switch could cause the vehicle to fail to start. All contacts to the switch and the switch reeds themselves must be in working order for the various components to function. That includes the starter and the ECM power.

[@dschmidty74]

thanks for posting. i have some what the same problem on my 03 ram 3500 cummins. but its just the 1st speed setting that doesnt work, the rest are fine. i tried what u did by wiggling the key and see if the 1st speed setting would work but it didnt. i bought a whole new controlling unit thinking the old one was worn out and didnt read the contact but that but that didnt do anything. what do you think? replace what you did in this video? or is there maybe something else?

[@randyhigginbotham961]

I have an 04 Dodge ram 3500 Laramie with an intermittent blower fan. Lately its not working more than it works. Here in Florida that's bad. I thought for sure the switch was the problem because the recirc door seems to be working (and the problem seems electrical.) The replacement of the switch went just like your video, but it didn't fix the problem. Im going to remove the fan and test for voltage at the fan plug.

[@davidkepler3048]

i have the same problem. what did you come up with. thanks! dave kepler florida

[@randyhigginbotham961]

I haven't. It's still very intermittent. I leave the blower on and turn off the compressor each time I get in/out of truck. Blower works fine. I've noticed it works again after messing with the blend on the controls. I've read the blend door can come lose and keep the fan from spinning. But I haven't looked into it yet. I suppose with Florida summer coming it will move back up my list in importance

[@greenrumour]

Javier I'm sorry your having this difficulty. There are several components that get the power through the switch you changed. When you removed the switch you probably noticed the burnt wire connector. This could be the problem. That 2 foot section of wire harness is replaceable. It has most likely gone too far (burnt terminals) and the connectors are no longer clean at the ac link. I hope that helps. Good Luck

[@CS-bd6jc]

Can anyone answer my question ?? What is the black and orange wire for on the ignition harness ?? Mine has went to ground and is blowing fuse number 10 can anyone help ??

[@kodyslays]

Great video man, just took mine out and it was fried gonna get a new one tomorrow morning and hope it fixes my problem

[@davidknowles8457]

Thanks for the video. Solved my problem.

[@longterm99]

Thanks for the help. Your video saved me so much time. Great job!

[@thehyperbeamshow3414]

Mine is the complete opposite. Sometimes the ac will run without the key in the ignition is this the same problem?

[@normstaley9799]

Thank you, that was my problem. It is now fixed.

[@tylerklassen9770]

My switch looks exactly like yours and having same issues but it didn’t fix it. Truck still works as it did before I replaced it

[@greenrumour]

The fan motor can be bad If its a bad motor sometimes it can be jolted into temporarily working by pounding on it with the palm of your hand or a rubber mallet. The plug going to the fan can be melted or over heated. be sure to check it for blackend connectors. Also if the steering column affects the fan motor, there is a short wiring harness from the ignition switch to the main harness that can also have over heated check it for bad contacts as well.

[@greenrumour]

Oh yea, check the resistor wires and resistor that is next to the fan. If all else fails you may have gotten a bad ignition switch out of the box. Or its the fan switch giving you fits. keep us posted. Good Luck

[@handymanjeff1]

Help! My 3500 van is getting an engine light, a/c kicking on and off intermittently, along with the blower. Air bag light on and off. If anybody knows please shed some light. I can wiggle wires underneath and cause lights to go on and off. Clues: Clock spring shows continuity, fuses all good. There was an aftermarket gps installed on wires under dash. Took it off. Anybody know?

[@greenrumour]

May be ignition switch. this is a very inexpensive easy to do item that may help and won't hurt to eliminate that as a possibility. Alternatively, Regarding Dodge 3500 vans. The AC/heater (HVAC) system may unexpectedly switch to the defrost mode when accelerating. This system is operated by engine vacuum and should be inspected for any vacuum leaks if this problem develops. There is also a revised vacuum check valve available to address this concern.

[@handymanjeff1]

29 bucks on ebay, sweet. Thanks man! I'll give it a try.

[@treygranados]

Got my ac going again, thank you.

[@dadlopez8714]

Thank you so much for the video! Saved me lots of money thank you again.

[@tonycasey1675]

My issue: If turn key backwards, none of the aux works. When starting, difficult to get the "sweet spot" to get truck to start. Can remove key from cylinder even if truck running. Question: Would you replace switch, cylinder, or both? Note: 2003 Dodge Ram 3500

[@greenrumour]

Sounds like both but we know the cylinders bad since the key pops out. Then there is the switch which is only 25 dollars so not worth messing with just change it.

[@tonycasey1675]

Thanks for the reply. Replaced both. Much better. Still a little touchy to turn backwards to get aux things to work (like radio), but resolved 90% of issue. Next issue: Manual transmission. Truck won't start with clutch ALL way down. Instead, I have to move it about 1 inch off the floor in order for the clutch to ready "happy" and the truck to start. Any ideas?

[@greenrumour]

It sounds like the clutch switch is either failing or is out of adjustment.

[@johnpul13]

Worked like a charm.. Thanks man!

[@Lalomalo_solidinca]

Big help thanx sir

[@JamesWestborn]

Thanks a lot. I did it on my 2004.

[@jmcabee50]

Thanks for the instructional video,blower works great now. any suggestions as to why there is no heat on the drivers side but there is on the passenger side, the drivers side just blows cool /cold air 2005 ram 1500

[@bradmetcalf5333]

Its the blend door. Dorman makes a replacement kit for it. Pain to change but was a problem for a lot of us.

[@chadpayne6254]

Great Video! Helped me out alot, I appreciate it. You were right saved alot of money doing myself. I look forward to more help videos.

[@bcm5653]

Great Video I just fixed the switch on my 2003.

[@mtmtodd]

Well, who would've thunk it. Thanks so much, this is also my problem.

[@truckthiss]

Great video. Out of focus, but it gets the job done.

[@907nttf]

My power door locks, and dome lights don't work with the key off only when it's key on. Also my radio doesn't work at all. I checked all fuses. I'm hoping this switch fixes it

[@greenrumour]

There is a good chance it will. Let us know how it turns out.

[@907nttf]

greenrumour I replaced my ignition switch and it didn't fix it. I don't know what to do.

[@greenrumour]

turboedDC5 check the other end of the harness its about 18" long

[@Fixstuffsteve]

Thank you dude!!! You must saved me money!!!!

[@davidkepler3048]

i have a 2003 dodge ram with no blower motor, i changed out the ignition switch and still have same problem. no blower motor. any suggustions

[@greenrumour]

Hey David sorry your having the same issues as the rest of us. In your case it sounds as if the blower motor has possibly failed which mine has done as well. I was able to give the motor a wack with the tip of my boot or the palm of my hand and it would start up again. That is far too annoying so I just went to Napa and swapt it out for a cool hundred. The ignition switch has failed again as well even with a new fan motor. It is a lifetime switch so no big deal but now I am going to put a 40 amp relay in the circuit so it takes the brunt of the load off of the poorly designed ignition switch. Check your power at the fan if its there its the fan if not it could be the control switch or the wiring harness. The ignition switch could still be the culprit if its a bad one. Try hard turning it a couple of times. Quick flip rotate the key just before start. that might get the bad switch to slap a contact.

[@LetsDIYIt]

Today I turned the AC on and all of a sudden smoke started coming out of the column. Turned it off and drove home. Tested and again it started to smoke. This time I was watching for it and saw a quick spark somewhere up in the column. Now the blower motor does not work. Truck runs, along with everything else I tested. Do you think this is the same issue and the ignition switch is the culprit?

[@greenrumour]

its likely the same issue or the ignition switches wiring harness.

[@randyhigginbotham961]

Sorry... couldn't figure out how to edit my post below. I took the fan out and the resistor. They both checked out fine. I cleaned the squirrel cage. I did nothing to the resister. I noticed some burnt junk and fuzz on the blower motor electrical connector. I cleaned that up. Turned the key...its working fine on all speeds. I guess the real test will be towing 8000 lbs through the hot Florida sun or baking in some shadeless parking lot. Also, I also looked at the wire going to the fan, it looks sufficient IMHO: about #10 or #12.

[@taddco5864]

Could this switch eventually stop the truck from starting?

[@PunjabiPopeye]

I have same problem on 2003 but when I lift up steering wheel, fan works. It just doesn’t work when it’s in lower position. You think Still need to change switch?

[@greenrumour]

good chance the switch is cooked but the switch is connected to a wiring harness that goes through the column and has a second plug just past the dash coming out of the column this harness needs checked out because it is common to have burnt contacts as well

[@mfred81]

Thanks...fixed my fan (it was staying on) did you worry about the spades getting that hot and damaging the plug (female spades) ?

[@waytooslow]

Did this today. Easy easy.

[@z777luck777z]

my ignition switch causes the a/c blow when the vehicle is off

[@chancesoutherland9551]

I'm about to buy a truck and want to know if this will work if the fan works when the truck is shut off, and not when running?

[@greenrumour]

yes it can weld the contacts together inside the switch and fan can stay on.

[@jackmezzell4114]

Both the ignition switch and wiring harness were burnt. I replaced both of them. Now it comes on and stays on like it should but it only blows cold air when truck is moving. When you stop at lights it blows hot air. Any suggestions on what might be the issue ?

[@greenrumour]

Sorry it took so long to reply. It sounds like your low on water in the radiator to me.

[@greenrumour]

Actually I miss read your question and thought it was warm when driving not cool so its in reference to your AC not your heater. So now my answer is it may be that your Freon is low or possibly the condenser fan is not working. Check the wiring and plug behind the radiator on the cooling fan. Mine was found to be completely shredded one time and needed rewired and a new plug end installed. Good luck.

[@jackmezzell4114]

Yes at first I thought it may need Freon. It was a little low so I added some. I still had the same issue and thought I might be leaking Freon. When I tried to add more it showed that it was full' I just went and started my truck and turned on the A/C. The fan was not spinning. So I'm thinking maybe that is the issue. Do I have to replace the whole fan or is there something else that could be causing it not to work ?

[@jackmezzell4114]

Ok sir I just found out that the condenser fan has a loose connection. When I wiggled the wires it come on but will not stay on. How can I fix this issue.

[@jackmezzell4114]

One other thing when I wiggle the wires going to the condenser the fan comes on but it isn't spinning as fast as I think it should spin. I'm not sure if that's because it has a bad connection or fan is wore out.

[@toekneedaman1112]

Would a faulty ignition switch also effect door locks from not working?

[@greenrumour]

Its possible. However the door lock master on the drivers side has a tendency to get cold solder joints. There are videos showing the removal and repair is simply solder the cracked or discolored solder points on the circuit board.

[@wilmabecker7218]

Can you tell me the number of the part that I need to buy for the ignition switch fix? Thank you in advance.

[@greenrumour]

It is a standard US-351 It is available at different locations by different part numbers. Autozone LS1144, Napa KS6829, Oreily's CS829 or the dealer 56045112AE

[@jamesdowse9656]

@@greenrumour perfect