1991 Jeep Wrangler YJ tune up

[@Poweraddicts]

If Power Addicts has ever helped you and you wanna contribute in some way, here are some links that can help make that happen. This here is an Amazon link that gives Power Addicts a small commission. Using this link costs you NOTHING more. amzn.to/39XSTTO

[@TheNickathome]

I bought a 1991 Wrangler brand new. Same color as the one in this video. Its one of two vehicles I regret ever getting rid of. I owned my jeep for 10 years, sold it with only 94000 miles on it. Wish I still had it.

[@Poweraddicts]

+Nickathome Smith I've has so many offers to sell mine. Offers well enough to double what I have in it. Just will not part with it. That Jeep has a home :-) .. Thanks for dropping in, also thanks for leaving a great comment. Have a great day!

[@09adge13]

I just did a tuneup on my yj. New plugs, plug wires, distributor cap and rotor. It Runs a lot better now with good throttle response and no missing while idling.

[@Poweraddicts]

09adge13 Good deal!! With it running better, it should pay you back with better gas mileage also. Thanks for taking the time to leave a great comment :-) Have a great day!!

[@joshgillming6387]

I still own my first car! 1970 Galaxie 500 two door hardtop. Recently, I bought a 94 YJ and have fallen in love again with working on my vehicle. This video is is a great refresher course on basic mechanics, and an introduction to the Jeep world. Thanks!

[@Poweraddicts]

You are welcome! I love how easy and inexpensive these little Jeeps are to work on. I really like that comment,it lets me know that I'm doing these videos the right way :-) . As for first car ... mine was a '72 Camaro. Even though it was a 6 banger with a 3 speed manual in the floor. I'd love to still have it, but the 6 cyl would be been replaced with something much more potent by now! Thanks for checking out my video and the cool comments. Have a great day!!

[@francestabor6792]

I know you have some newer projects, but I want to thank you for the YJ videos. I still can’t get my gear shifter grip changed lol.

[@machiox9951]

thanks for the post. i really learned a lot. i have a 92 YJ Wrangler and you made this look simple. thank you very much. it's not too easy finding info on this make and model of Jeep..

[@Poweraddicts]

+MACHIO CAMACHO You are welcome. Hope is helps! Thanks for taking the time to leave a great comment! Have a great day!

[@jeepcollector91]

Nice YJ. I love my '91 YJ. Best vehicle I have ever owned. Extremely easy to work on. Not a lot of unnecessary crap to go wrong and one of the simplest fuel injection systems. Keep the Jeep videos coming.

[@Poweraddicts]

Amen to that my Jeepin' brother, I second that!! She was a basket case when I first got her so thanks for the "Nice YJ". There will more videos :-)

[@terrydigenti8756]

Thank you so very much for your video. I own a 97' Wrangler and I don't know anything about vehicles. My brother in law does and is going to teach me how to tune her up this Sunday. Very informative.

[@Poweraddicts]

You are welcome and I am glad you liked the video. You picked a great ride to learn on. Jeeps are pretty easy to work on. Best of all not crazy expensive on parts either. Congrats on wanting to learn, that the first and biggest step. Good luck and have fun. There is lots of pride in saying "I did it"! Thanks for checking out my video and have a great day :-)

[@clwilli]

Just picked up a 95 Wrangler with 100K miles, owned by 80 yr old guy that kept it in a garage in Bend Or. Will use your video to do some repairs..Thanks

[@KECSPAIN]

GOOD VIDEO. EASY TO FOLLOW AND USEFUL TIPS. THANKS FOR TAKING THE TIME.

[@jeepfanforlife8039]

Your way- 1.) Take old wires off old distributor 2.) put new wires on old distributor 3.) put new wires on new distributor My way- 1.) take old wires off old distributor 2.) put new wires on new distributor My way will save you sometime. Nice jeep by the way it's a beauty. Keep up the good vids. I'd like to see more of it.

[@Poweraddicts]

I agree with you. I just gear some of the videos to make it as goof proof as possible. She was real rough when I first got her, it's come a long way! Thanks for the great comments! Have great day!

[@partydude111]

thanks, brother!!! got my jeep running again cause my distributor rotor was pretty much destroyed... lol wish i woulda checked it earlier, but now I know for next time. You also helped me on replacing the fuel pump sending unit and fixing my gauge! So thanks, and keep up the good work!!

[@Poweraddicts]

partydude111 Dude .. I love reading comments like this!!! It really keeps me in tune that I'm on the right track. Really happy that the vids are helping you so much. Thanks brother for leaving a darn great comment!! Keep a Jeepin' bro!! Have a great day!!

[@613wbho]

Thanks for this video!!! I actually think I can do this myself now. I have ratchet sets an all....I'm gonna give it a shot!!!

[@Poweraddicts]

You are very welcome! Glad I could be of some help. I enjoy tinkering with old cars. So, I wanted to start passing on my knowledge and experiences to others. Guess throughout life I graduated from building plastic model cars as a child to rescuing cars from the metal munchers! This one has a home tho. I've owned many different types of cars. This is my first Jeep ... I am sooo HOOKED!!! It's a keeper! Keep checking back .. there is more coming! Thanks for checking it out :-)

[@Ryantube007]

To add to this, if you're already replacing your distributor cap/wires you might also consider silicone to make that cap water proof. You know, for when that moment comes that fording a local creek seems like a really good idea.

[@Poweraddicts]

He is correct. Distributor cap does ride really low. So, if you like creek riding, seal that cap. Also, check the vent tubes on the t-case, trans, front and rear diff to make sure that they are sealed up so no water gets in them.

[@jake-hy2zb]

Thanks Chuck! Merry Christmas to you and your family.

[@Poweraddicts]

My pleasure ... I see you have an old Mustang as your icon. I've had 3 of those .. '68 & '67 Coupe and a '67 'vert. Wish I would have kept the convertible .... but money talks and away it went!!

[@gmkmiller]

Awesome as usual. Suggestion any video of onboard air DIY in the plans.

[@Poweraddicts]

Thanks!! Glad you like the video! Onboard DIY of what?

[@stone572]

Thank you for the write up. I am going to be trying to do my own work - I figure the you just saved yourself between 150 - 350 in labor. @ 70 - 100 per hour

[@raymondbingham3214]

Just picked up a 94 needs a tune up thanks for info

[@Poweraddicts]

You're welcome!! Thanks for taking the time to leave a comment. Have a great day!

[@camcordernonsense5264]

that little cap stuck out visually. I noticed a "1" on the cap. the old one had a "1" also. I followed the lead lengths also. everything was dirty and the rotor tab had bites I'm guessing where it was sparking? the cylinder leads are weird to me on my 91 yj 4 cylinder. 1,2 then looks like it fires 4 and then 3? I also did NOT check the pre tapped spark plugs. I did it last week and just saw this. I feel pretty good in my work being checked here. I don't know what you do for a living but you could be a teacher. thank you. loooooooooove your channel.

[@Poweraddicts]

Happy the channel is serving you well!! A long time ago I did teach classes. My current job I do get to work with students. I dont actively teach though. Glad the video was of help to you! Thanks for taking the time to leave a great comment! Have a great day!!

[@SamAlexCaldwell]

Hi there, I just bought a 94 YJ out here in Japan. The Japanese take pretty good care of their cars, but the first thing I did was change the oil (it was brown sludge). It has about 80k miles on it (130k kilometers), so I'm wondering what I should be looking for at this point. She came with a lift and 33's, so I think her life has mostly been weekend warrior. She is now my daily driver and I get lots of compliments. Can't wait to get her all fixed up. I am loving your videos!

[@Poweraddicts]

Glad you like the videos, hope they help you. Mine had a VERY hard life before me. It was a farm toy for a 14 year old kid. First thing I did was change the fluids in EVERYTHING! I ended up doing the manual transmission 3 times because the was water mixed in the original fluid. After the 3rd time the fluid came out clean. Check all your hoses and belts for dry rot cracks. Check the the remaining life left on all your brake pads and shoes, change if needed. After all that ... drive it and enjoy is!! The old Jeep may still have a gremlin surface a time or two. But .. it would be a Jeep if it didn't :-) . Luckily the little tub of bolts are pretty easy to work on. Thanks for checking out my videos and taking the time to leave an awesome comment! Have a great day!!

[@bogramps4833]

87 jeep 4.2 just started knocking

[@Poweraddicts]

Thats not good!! Find you a 4.0 .. mix up some parts to create a stroker 4.6 powerhouse! Thats what I would do :-) . Thanks for dropping in and taking the time to leave a comment!!

[@JeremyBateman38112]

Evening. So I have a 90 yj with the 4.2. Looking for advice on loosening the bearing cap bolts. Pb blasted it. Used a cheat bar, nothing. Not sure about the heat because of the oil. Any suggestions on how to break the bolts? Thanks for all you do.

[@jasonupton8926]

Got a 4 cylinder 1995 and 1993 Jeep Wranglers that I did a body and motor swap frame was trash on 95 body was trash in 95 Pulled vacuum lines and I’m not 100% where all the vacuum lines go back. Got any video or diagram recommendations.

[@cycl0nnus]

awesome video again brotha!!! love them yj videos!!!!!!

[@Poweraddicts]

Glad you like the TJs! I'm kinda partial to a YJ myself! Thanks for dropping in!! Have a great day!!

[@cycl0nnus]

i too prefer yjs over tjs, they look hella meaner!! i have a 89 yj 2.5l that ive been rebuiding for at least 5 years now. takes a long time trying to save, but its coming along. i study your videos cuz theyre very detailed and it helps me. i'll be doing the posi lock for my shifter soon and will use your video as a refernce. thanks again brother, keep up the fine work!!

[@sinluze]

Just bought my yesterday!

[@Poweraddicts]

Congratulations!! You will love it! They are lots of fun drive. Cheap and easy to work on. Enjoy my Jeepin' brotha!! :-) Thanks for checking out my videos!

[@sinluze]

SO here is the prolem...i swapped out my O2 sensor and plugs and wires.....now i get a horrible engine vibration...almost like the timing is off. yet i know the ecu controls the timing..any suggestions

[@Poweraddicts]

Sean Dickinson Was it vibrating before the tune up and O2? If no, you may wanna check to make sure there isn't there aren't a couple of plug wires on the wrong plugs. It's easy to do .. I've done it.

[@sinluze]

well I took them off and back on multiple times set them per my manual and still....i could be but I wouldn't know perhaps you might be able to send me a pic with the proper wire set up because I have it set to the book and its not right lol

[@Poweraddicts]

Sean Dickinson You do have the inline 4.0 6cyl?? Right? If so .. I'll see what I can get for you. What manual are you using?

[@vhb408]

Just got me a 97 jeep wrangler.is that everything I would have to do for a full tune up?thanks for your videos.

[@Poweraddicts]

Your welcome. That is a basic ignition tune up. Some people include PCV valve and air filter along with the ignition parts. I check the air filter, if it looks like it needs replacing I do it. If the engine uses alot of oil, then change the PVC valve. Being that you just got it and you may or may not know the history of it being maintained. If you don't, go ahead and change those parts also. Thanks for checking out my videos! Have a great day!

[@jmarceth5]

Power addict I have few questions my YJ 93 sometimes back fires , I already change the wires and plugs , also I change the fuel filter clean the throttle body and clean the sensor. And today 6-28-2021 it started doing back fire like it felt like it was missing fuel and back firing also , I was thinking should I change the MAP and TPS , ?

[@Poweraddicts]

The TPS will have a "dead spot" in the throttle sweep. I have a video on that and the MAP. Slight possibility of it being a Crank Shaft Position Sensor. Most of the time they just go out and done. But I have seen them just bad enough to cause erratic issues.

[@leesire]

Perfect video again! I wanted to hear it crank up. I bet that Jeep misses the farm! My 97 Sport has 106k miles, should I change the fuel filter? Going to do everything you said next week. Going to Siesta Keys this weekend. I hear the Red Tide is bad, but going anyway.

[@Poweraddicts]

It never hurts to do preventive maintenance. Tune-ups and changing filters will help ensure a long dependable life from your rig. I'm going to be doing an exhaust video soon. I will be starting it up then. Have fun on your trip. Thanks for checking out the video and taking the time to leave a great comment! Have a great day!

[@sherrylong638]

i enjoy watching your vedios very helpful. i am having issues with my 95 and havent seen a vedio on whats going on. is there a way i can ask you questions?

[@black85chevy]

Hey man love the videos! Where can I find an accurate color coded wiring diagram/schematic for a 1987 YJ?

[@Poweraddicts]

Thats a good question! Even the ones I have for my rigs arent color coded or accurate, Glad you like the videos!! Thanks for dropping in! Have a great day!!

[@GregBloss]

Awesome can't wait to do mine tomorrow Should I check the timing when done? And would you recommend changing the coil at the same time?

[@Poweraddicts]

Timing is controlled by the Jeeps computer so you are off the hook there. I typically don't change the coil unless it failing. Good luck! Thanks for checking out the video! Have a great day!!

[@rfailing1]

Good vid - so I just got my 93 YJ lifted in very decent shape but engine seems to lack power. Of course has big tires which may contribute to lower power.....anyway I assume there is not timing adjustment for distributor? It's been years since I did a tune up, always adjusted timing. I assume the crank sensor tells the ignition when to fire.....yes?

[@Poweraddicts]

Thanks, glad you like the video. You would be correct. Crank sensor takes care of that job. Installing much larger tires without proper gearing to go along with it, can hurt performance. I'm running 31s now, with no major damage on power. I could probably go to 33s max before it would really hurt the performance. I'd like to run 35s, but I'm not into regearing at the moment. I'm still running stock gearing at 3:07s 5-speed 4.0. Hope this helps! Thanks for dropping by and congrats on the YJ. Welcome to the Jeeping addiction!! :-) Have a great day!

[@rfailing1]

Power Addicts - Jeep, car and motorcycle tips Thanks for replying....I drove a 1995 YJ for 4 years until the body mounts failed inspection last spring. Missed driving no doors & bikini top! Found the 93 on Chaigslist - has a 7" lift (more than I wanted) plus 35s. Don't know about the gearing, but it's running about 1000 rpm at 40mph in 5th gear so I assume stock gears. Now you have me wondering about what size tires to get when I replace these......any suggestions?

[@Poweraddicts]

rgee bee Personally I would love to run 35s. If I run across a set for the right price I'll have 'em. But as I mentioned above, regearing to about 4:10s would be needed. Not to mention more lift. The 31s I run now are great with the stock gears. If you were to drop to tires that small, you would have massive gap between the tire and fenders. So with 7" of lift I'm assuming 4" suspension & 3" body. Pull the body lift and it wouldn't look too bad. But that's just my opinion. For my taste, I like some space between the tire and fender, but not lots of gap. Sometime this summer I will be demo'ing how to do a junk yard lift on YJ. Guessing I'll get about 2" of lift from that. So .. you mentioned above that 7" lift is more than you want. You have no power because of tires. Drop to 31s or 32s, pull the body lift (install maybe a 1" Daystar body lift), this will you help with both issues you mentioned. Thats the coolness of having a Jeep .. build 'em like we want 'em! :-)

[@The8TrackChap]

With the oil change, did you use any ZDDP additive for the flat tappet cam?

[@Poweraddicts]

The8TrackChap Some people do .. some don't. I don't personally. Only time I use the ZDDP additives is when I'm breaking in a new engine that has flat tappet lifters. Thanks for checking out my videos! Have a great day!

[@jamesdjesse]

Your not going to start it?

[@The8TrackChap]

How do you tell when the coil should be changed?

[@Poweraddicts]

Here ya go, the video about the coil: kzbin.info/www/bejne/bYSwaYdnf9aHqrc . Hope it helps! Have a great day!

[@kingsoulsurfer41]

I jeep rally & went though mud -water ,air filter full of mid-water. What r the steps I should take?

[@Poweraddicts]

I would change the oil just in case. Also, the front and rear differential may take on water, change that as well. I like driving in water but it always creates lots of work later to be sure that all the fluids are not contaminated with water. Have a great day!

[@adrianaacuna6236]

hello i just purchased a 1993 jeep yj with auto transmission that took a dump had to rebuild my machanic says i need a tune up because when you floor it doesnt seem to have the power.. basically would a tune up help?? has 175 thousand miles on it

[@Poweraddicts]

It may or may not make a difference in power. It really depends on the condition of the engine overall. Also .. if it truly needs a tune up. You didn't state if it was 4 cyl or 6. With 175,000 miles, I've known of the 6yclinders having over 300,000 and run great. The 4 cylinders have no power no matter what you do. My sister has a 4 cylinder and it struggles at everything it does.Even if it doesnt make a big difference, it will help fuel economy.

[@adrianaacuna6236]

thanks for the reply its a 6cyl it does great once its starts moving its just on the acceleration where i notice its a bit slow

[@Poweraddicts]

They are torque producing engines, They dont have a lot of giddy up and go to begin with. They are made to pull up hills, rocks and pull stuff. Taking off and going fast isnt in their stock configuration. They are probably the toughest engines I have ever had the pleasure to work on. Mine has well over 200,000 miles. My dads has close to 300,000. Proper oil changes and those 4.0s last a veeeerrry long time. But they don't take off like a car, they take their sweet time about getting up to speed.

[@biagiol303]

great vid as usual. thanks

[@Poweraddicts]

Thanks, glad you like it! Thanks for taking the time to leave a great comment! Have a great day!

[@SoutheastHVAC]

this is the 4.0 right?

[@Poweraddicts]

Yes sir it is. Thanks for checking out my videos :-)

[@michaelmoore5688]

How much did this tune up cost you? I'm on a budget haha.

[@Poweraddicts]

Trust me I totally understand being on a budget! lol .. I dont remember right off 'cause it's been a while. Around $60 - $70 or so depending on what brand plugs and wires you buy. Also, the rotor button and cap, I always get the brass contacts instead of the aluminum. I tend to get the better parts so that they last longer. Being that I don't plan on getting rid of the Jeep I get lifetime warranty also. You don't need the high dollar spark plugs with the fancy metals and tips either. Just a good set of copper core plugs is fine. Thanks for checking out my videos! Have a great day!

[@michaelmoore5688]

Thank you! I will be doing a tune up this weekend.

[@Poweraddicts]

Your welcome. Just take your time and do one plug/wire at a time so not to get them crossed up. Smooth sailing from there. Have a great day!

[@joshgillming6387]

I replaced wires, plugs, cap, rotor, oil, filter, and belt for around $100. 1994 Jeep YJ. It really is proactive maintenance! I did use 3E plugs (performace part), other than that, i just used regular OE parts.

[@joshgillming6387]

Mine is a 4 banger though... only 4 plugs not 6!

[@Holdfast214]

Really enjoying your videos man. I just picked up a 91 from a guys house out in Joshua tree and it’s been sitting for the past 4 years. Prior to that it did run...regularly. He said he went out one day and tried to start it and it would fire up...there it sat for the next 4 years. A ton me up kit is high on my priority list, and specific recommendations? I tried digging through the comments but didn’t see anything. Thanks in advance

[@Poweraddicts]

Get a quality cap and rotor with brass terminals, not the cheap aluminum terminals. Get quality spark plug wires as well. As for spark plugs, I run standard Autolite spark plugs. I've tried the fancy high dollar ones. I got no real performance difference so to me I was just wasting my money. Some people swear by the expensive plugs, again .. me personally I got no better mileage or performance out of them. Hope this helps! Enjoy that Jeep! Have a great day!!

[@70dejavu]

very cool thanks for the video

[@dylankoett2761]

good vid thanks for sharing

[@Poweraddicts]

Dylan Koett You are welcome! Hope it helps :-) Thanks for watching my video and taking the time to leave a comment!! Have a great day!!

[@cycl0nnus]

baddass!!!

[@Poweraddicts]

Thanks!!

[@rigobertorodriguez7724]

Timing

[@Poweraddicts]

The timing on 1991 and up YJs isn't adjustable

[@gmkmiller]

Onboard air

[@Poweraddicts]

Not sure when but yes. There were will a video. I've got most of the parts. The AC compressor I was gonna use locked up so I gotta get another one.

[@Poweraddicts]

I just finished the rear bumper/air tank for the 91 YJ. I'll be releasing that video this coming Sunday.

[@CarlosRios1]

The whole video is out of focus lmao

[@nobuddynoah]

Do you see the date. Still a great video despite this, thanks Power Addicts!

[@Poweraddicts]

Thanks Dank!!

[@sherrylong638]

i enjoy watching your vedios very helpful. i am having issues with my 95 and havent seen a vedio on whats going on. is there a way i can ask you questions?