How to diagnose Lean codes and vacuum leaks P0171 P0174 M50 M52 E36 E39 Z3
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- Опубликовано: 9 фев 2025
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How to diagnose Lean codes and vacuum leaks P0171 P0174 M50 M52 E36 E39 Z3
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Another great Ted-Talk on old BM-Double U's. Thanks for this one, showing us how to take off and install the rear drive shaft, and especially help with Vanos errors. I was about to install new Vanos solenoids but remembered (eventually) to check the oil cap, sure enough - no cage. Popped in an oil cap I had lying around, the Vanos errors disappeared like Thanos. 😂
This was great! S50 owner here, and this was helpful. Thanks again.
Nice video, I have two comments. The first one is that line you forgot where it runs to on the M50, it runs to the Tube that the connects the ICV to the underside of the intake, it's shaped kinda like a question mark. Also, I would additionally check the small vacuum line going from the fuel pressure regulator to the back underside of the intake. That line seems to get very brittle (i've had two on two separate engines I had to replace) Great tips!
Hey nate, is it possible to hard line all the vacuum hose?
hello nathan .. when i press brake with gear shift "N" ENGINE OFF MS41 -M52B28 WITH M50 VALVE COVER.. AND NOT CCV 5:00 NOT INSANE STABLE PROBBALE .. CAN IT COUSE THAT PROBLEM?INSTALL E46 330 EXHAUST SYSTEM : FROM EXHAUST MANIFOLD TO MUFFLER ..(I HAD NOT BEFORE "EXHAUST " BECAUSE NEWLY ASSEMBLY ENGINE) AND AFTER THIS HAVE THAT PROBLEM ..
OH.. if anyone has an E83 that the radio stays on after you've turned the car off, removed the key, locked the door, etc... check the #7 fuse in the glove box. The original owner of my 2008 x3 3.0si took it out for some reason, it was lying in the glove box.
Hey all, I have an issue with a bmw z3 M54 2.2i. It keeps coming up with bank lean codes and misfires. Both banks and single banks, random misfires, but diagnostic says cylinder 5 is troublesome. No obvious vac leaks anywhere... fault has been getting more frequent, although the car hasn’t run much in the last six months... any thoughts??? Thanks.
More great advice, many thanks.
thanks for you videos really helpful
Where does the 13531433176 line from the fuel regulator go
I would like to add that a bad maf sensor likes to give you lean codes and also on the m54 there are (sometimes) two small test ports nipples on the rear runner of the intake manifold that come with rubber caps. these caps can fall off/crack.....Damn Nathan don't you ever take a day off??? way cool video I have never messed with a m52 and the tour you gave is helpful...thanks. and have a happy new year!
+danekeeper1 I dont take days off, i slept once in 1995 lol, if this terrible rain stops today i will be out making more videos this afternoon, thank you for watching the vids, hopefully this will keep someone from having melted pistons like the 528i i have sitting here
+Nathan's DIY Garage Ay im not gonna lie bro you got the best videos on bmws i have seen on youtube on diy. i wanna make a personal dvd of your stuff to watch in the garage lol
Lol well I'm sure others have better quality videos up, but mine are crude and to the point, I need to get more into the e65 e90 e60 cars but I don't see a huge amount of them cheap enough yet for a lot of the DIY guys to own and tinker with, it seems like right now the e39 and e46 cars are favorites for guys to have as a side project.
e85s are getting cheap....some diesel stuff would be cool too, that m57 of mine looks like someone thru spaghetti in the engine bay..there are more hoses and wires than an airplane..
Yea i did see some e85's going for cheap on craigslist, im guessing that is for the convertible only ? im sure the coupe still bring good money? I have never heard of the M57 in the U.S,, but im sure there are some possibly.
Does this apply to the 2008 335i e90 with the N54 Twin Turbo engine as well ? I keep getting the p0171 and p0174 codes on mine. Any ideas on common culprits for this model?
(HK) John C. Shouldn't happen on new cars like that unless you messing with it
Thanks so much for all your videos. Your channel is awesome. I just bought a one owner 1998 328i sedan. Lean codes and misfires on all cylinders. I already replaced spark plugs and all ignition coils. Throttle body boot is ruptured. Idles rough. All else seems ok. Any ideas so I can pass inspection? I know you're busy just hoping for some help. Thanks for reading my comment ( 4 door auto, 139k miles.) Can't get rid of MIL and p0170 code is only one left. Please help
Clean your fuel injectors bro
Not really diagnosing air leaks or even if ther is an air leak...just pointing our some places there may be a leak. Should have shown where to connect a vacuum guage to actually check. And how to spray chemical to ascertain same.