I OFFICIALLY hate my engine

[itskingsteelo]

as the title states, I now officially hate my engine. I cant fucking wait to swap out my engine. for one this engine has NO power. (not saying this is true about all BMW engines, just mine in general) and two my idle keeps taking a shit on me, it use to rev high so I cleaned everything out and replaced some hoses and even got another ICV and it worked fine for a little while and now this piece of shit is jumping idle. as soon as I start my car it revs up to 3k rpm and comes back down to 1k, THEN it just jumps from 1k to 2k up & down up & down up & down. I had to drive to work like this on the fuckin freeway today. anyone got any suggestions? any help is appreciated.

[AndrewBird]

You likely have a vacuum leak or a bad/dirty ICV. Have a smoke test done and fix any leaks.

Also, do a stomp test and see if there are any codes stored.

http://www.pelicanparts.com/bmw/tech...de_Reading.htm

[efficient]

When the car is at operating temp and hot, spray some carb cleaner around the intake manifold area. Just hear if the motor changes sound and if it does you have a vacuum leak. If you dont want to pay for a smoke test.

[flyboyx]

nitro's advice is good. i would follow it if i were you.

if that doesn't work, sell the car and get a '73 pinto.

[slammin.e28]

Is your motor a M20??

[itskingsteelo]

You likely have a vacuum leak or a bad/dirty ICV. Have a smoke test done and fix any leaks.

Also, do a stomp test and see if there are any codes stored.

http://www.pelicanparts.com/bmw/tech...de_Reading.htm

thanks guys, if I wasn't at work right now I would get on it asap. unfortunately im here till 230 and im already dreading the drive back home. but I will follow your suggestions.

Is your motor a M20??

yes it is, 87 325e

[nando]

time to swap in an S54

[EyExR]

Yeah. Not a fan of the M20 any more. It's loud, it's bitchy, and it's low on power... Oh well.

[itskingsteelo]

time to swap in an S54

thought of that, also thought of rebuilding the engine and boosting it but im afraid itll take a shit on me again so im gonna go with a different engine.

Yeah. Not a fan of the M20 any more. It's loud, it's bitchy, and it's low on power... Oh well.

agreed, it sounds like its going 60 when its only going 15 I hate that shit. I gotta do my suspension before I can do a swap on it so im stuck with it

[MPLFoster]

i love my m20...

[Roysneon]

time to swap in an S54

How to tune up m20

Change vacuum lines and ICV

If that does not work, s54 swap.

[slammin.e28]

How to tune up m20

Change vacuum lines and ICV

If that does not work, s54 swap.

I think that's a direct quote from the Bentley manual.

[jhaurimn]

Did you just have the battery disconnected? If so, engine has to relearn its idle, so rpms will go up and down occassionally for a few drives.

[Roysneon]

I think that's a direct quote from the Bentley manual.

The Haynes manual lists the last step as S50US, it also states that the S50US is a real //M engine. Just another reason it's Bently manual ftw.

[TurboJake]

I will be a sad panda when my M20 dies.
If I/the car ever see that day. The body will probably just rot around it and the m20 will still be ticking along at 750k miles.