Ford Explorer 4.0L V6 SOHC P0171 P0174 Lean Codes- Common Cause

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Күн бұрын

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@jamesfitzgerald6135 3 жыл бұрын

Watched 2 mins, of this video and had my P0171/P0174 & had my 2002 SportTrac repaired.My PCV tube had become disconnected. My truck has no issues now. THANK YOU for the great video help.

@xcaptainspookyx6115 2 жыл бұрын

I have an 02 sport trac as well. Is that part called a pcv tube?

@lcrr700 8 жыл бұрын

Thank you! Check engine light came on the other day... got it checked, P0174 came up. Found your video and then found the hose had come loose just as you showed. Saved me a trip to a mechanic! Now to figure out how to reset the CEL.

@tap4154 8 жыл бұрын

I just spent hours laying on plywood over my 2000 F150 4.2 V6 engine replacing the IMRC bushings between the back of the engine and firewall, with the intake manifold on. Basically "laproscopic surgery" using various wires, screwdrivers, a wooden spoon, and the few fingers I could squeeze in, very patiently getting the bushings installed, then the control rods in place. After that the P1518 code was gone, but eventually I pulled a P0171 code. I went back online to search some more and ran across your video, and this was what caused it! I'd removed the intake tube the day before to replace a bad PCV elbow under the throttle body, and that hard tube came out without me realizing it. Awesome! Thank you!

@semperparatus678 5 жыл бұрын

My OBD reader tossed that code at me this morning. I was kinda freaking because I did the timing with you literally. Put the motor back in yesterday. So I watched this video, the second you went to the air filter area I paused your video and went to the explorer. My air breather tube came disconnected somehow, I think because I usually don't tighten the clamps on the air hose sections. Old school, it was common but on this tech shit it very much affects the vehicle. Mine would just turn over this morning but wouldn't start. I connected the air housing and tightened down the hose clamps. Started right up, code went away all is good. Your saving my ass and again thank you for your four part timing videos. Couldn't have done it without you.

@moonlightmoolah7057 5 жыл бұрын

Thanks! Got the "check engine" about an hour after leaving the Jiffy Lube and took it back to them and they said it was Fuel Pump or Sensors and to see a mechanic. I wrote the codes down to do some research myself. After watching your video I went and checked my truck, because they had changes my air filter too and the hose was disconnected as you had stated. You might have saved me a bunch of $$$. Thanks for sharing this video.

@mikeinselmann2928 Жыл бұрын

Thanks for your help with all your videos and helping us DIY'ers save money and do it right the first time. I have a 2010 f150 and a 2014 explorer. If I ever have any questions, I check your channel first 👍

@gsquaredmke 9 жыл бұрын

I had a lean code on my 2003 Explorer Sport a couple months ago - fixed a cracked PCV elbow and was good to go. Drives great, no issues. About a week ago I got an oil change, and yesterday I got another lean code banks 1 and 2. Going to check and make sure they put everything back how they were supposed to before I go on to more troubleshooting. Thanks for the video!

@gsquaredmke 9 жыл бұрын

Holy crap. Sure enough, that same tube piece was left unplugged from the intake. Thanks so much - saved me a lot of time!

@sskyking1 6 жыл бұрын

Just had this happen on my 98. $10 for an OBD2 reader and an app for my phone, add a KZbin video, and my mechanic is probably out over $100 and I've got the use of my truck! Thanks man!

@Eric.schmidt 10 жыл бұрын

Love this, takes me back to my day of 14 years ago. I think that's why I like your videos though. As an old drivability tech it makes me happy to see a guy take his time and do it right such as resetting the 12A650 (still remember some basics). I seen plenty of techs that would just clear codes and ship the thing down the road.

@FordTechMakuloco 10 жыл бұрын

e schmidt Nope I like to let it relearn, I get some satisfaction out of it somehow.

@calumrife 4 жыл бұрын

I bought a 2004 Ranger FX4 which I absolutely love, but it keeps pulling these lean codes. It has a bunch of minor issues I figured were related to ignition, fuel, and vacuum leaks. So far, I replaced the whole intake manifold, OEM dealer part. Huge difference, no more vacuum leaks in that area, gobs more power. I also replaced the coil, plugs, wires (all OEM), MAF sensor, and two upstream O2 sensors. I seafoamed the crap out of the oil and fuel before changing the oil with full syn/WIX filter, and WIX fuel filter. Great. It's running much better, still not fixed. It was also stumbling really bad and misfiring on cylinder 2, which seems to have stopped after all these improvements. The only three things I've narrowed down the lean codes to are the possibility of low fuel pressure (bad fuel pump?), burned valve or cracked head, or *hopefully* this stupid PCV hose I overlooked. Mine has the clips on it, but both ends have O-rings. I really really hope it's the latter. Thanks for all your videos and demonstrations. They are absolutely invaluable, and I would hold you up as one of the best auto techs I've ever seen. I always recommend your channel to any Ford friends of mine. As a 7 time Ford owner, I wish I'd have discovered your videos years ago!

@joelgalbraith3883 5 жыл бұрын

Thank you, I've been chasing this error for month now in my 02 Ford Ranger. I followed the advice from the folks at O'Reilly after they read code (fuel injector cleaner, change the fuel filter and clean the MAF) to no avail. After watching this video I traced the tube back and it was disconnected on the engine side of the metal tube. Problem solved.

@29outlaw 3 жыл бұрын

Haaa...this channel saved my ass again. Cleaned the TB in accordance with your other video, but forgot to tighten the worm clamp on the intake tube. The result was that 2 days later I had to also find this video.

@bobobear8888 9 жыл бұрын

Thanks a lot! discovered the disconnected hose causing the P0171 and P0174 :) fixed it. hopefully no more check engine for me

@killerguitars52 10 жыл бұрын

Damn man, not too many techs throwing around terms like venturi effect anymore.

@SteveOh000 6 ай бұрын

Fr I thought only us Water operators used that vocabulary lol

@klc317 10 жыл бұрын

Nice. I have an '03 Ranger fx4 4.0 with only 65k miles (had it for 6 years now). Pretty much a garage queen, still black underneath with no rust at all, Ive managed to avoid getting it out in the salt and winter here. I recently had to replace the PCV tube due to these codes, easier to just buy the entire tube including the new rubber elbows...easy job. Besides the normal assortment of changing every fluid in it and some updates its a great little truck and thats the only thing I've had to really replace so far besides an A/C condenser, dryer, and oriface tube and typical maintenance items like shocks, brakes, ball joints, etc. You should show a video of replacing the timing chain tensioners/cassettes on one of these....fortunately mine is fine (I think they fixed it by '03) but I've helped do that job on an earlier model Explorer....might as well just go for a reman engine by the time you're done....what a horrible job. Thanks for the video!

@FordTechMakuloco 10 жыл бұрын

klc317 Oh I definitely would do a video of that but we just don't see these much anymore.

@HaleyPBear 4 жыл бұрын

This is exactly the video I was looking for, and yep that’s exactly what the issue was on my 97. Thank you so much!

@dieselburner4461 3 жыл бұрын

What was the fix?

@luiev Жыл бұрын

My 97 on that hose the following connection point which is a y rubber coupling is split open.....do you know the name of that specific part?

@HaleyPBear Жыл бұрын

@@luiev No unfortunately I don’t, I’m sorry

@luiev Жыл бұрын

@dieselburner4461 my 97 explorer on that pcv hose at the following connection point is a y rubber coupling that split open......do you know what that part is called

@Super4speed 6 жыл бұрын

i went out to my b4000/ ranger opened the hood,, wow e wow wow the pipe had come out, truck now runs perfect such an easy fix

@douglasthompson2740 Ай бұрын

On a charcoal cannister EVAP system is the cannister supposed to be open to ambient atmospheric pressure? It would seem that the two rubber caps on the top of it are made with channeling molded in to prevent a seal. (97 Ford Ranger 4.0L pushrod). Wouldn't that kind of defeat the vacuum the system runs on pulling fumes into the combustion process?

@keeganrasmussen977 Жыл бұрын

1 problem on mine was someone had used an ilfitting piece of fuel line instead of the proper hosing for the iacv connection... Ltftb2 is still at about 14, and without finding any other leaks/etc. I'm wondering if the throttle cable needs adjusted... If not, I'm starting to look into fuel systems... I mean fuel line was used for air... Maybe I should look into fuel lines anyway.... Gotta say though, the guys at midas have been great, not only working with me through the repairs, but even the price: quality ratio far exceeds just about everywhere else I've been.... Oddly, a better price than the chops had who done f'd it up in the....... Well, partially f'd it up, previous owner was horrible too, but yeah.... Shout-out to Dave, lance, and the guys at 2nd street midas in Ogden Utah though for sure

@billrimmer5596 9 жыл бұрын

Thank u Brian. U r the best!! Would disconnecting the battery cables and connecting a jumper wire between the cables have accomplished the same thing? Resetting the baro? Or is that specialized Ford scan tool necessary?

@FordTechMakuloco 9 жыл бұрын

+Bill Rimmer Jumpering the wires as shown in my pcm reset video will have the same effect.

@airbrushinmotion 2 жыл бұрын

Thank you! I was wondering the same thing!

@austinmitchell1586 3 ай бұрын

I'm having this these same codes right now. The MAF has been replaced, and hoses appear to be connected and fine. I'm thinking o2 sensors? It tends to idle funny at times.