318is 1991 rpm fluctuate

[immajackuup]

for some odd reason my car rpm fluctuate from 800 to 1k while idling at the red light. can a bad fuel injector cause the rpm to be bouncy ? it only does it here and there. Should I buy fuel injector cleaner for the hell of it?

[Dj Buttchug]

possibly ICV

clean it

[immajackuup]

possibly ICV

clean it

do you have a picture of where the ICV locate at on m42 motor?

[Balleristic31]

Between the firewall and intake mani

[immajackuup]

is this it?

http://forums.bimmerforums.com/forum/showthread.php?t=454501

so i have to take off the top manifold?

[Balleristic31]

No there is a bracket holding the icv to the corner of the intake manifold. Undo the nut and the vacuum hoses attached to it and the icv comes out

[immajackuup]

No there is a bracket holding the icv to the corner of the intake manifold. Undo the nut and the vacuum hoses attached to it and the icv comes out

it be very helpful if you show picture of what you talking about.

a guy coming from honda that rebuilt/install aftermarket parts to bmw which is totally different lol

[///digitalme]

you dont need to untighten any nut to get it out..just disconnect the hoses...and pull it out of the rubber thing that holds it...

[immajackuup]

i assume this is it

[iamsam]

you assume correctly.

My M42 does this too, but only when it is brutally cold out. When i start my car in the morning, it's fine, and by the time the car is warmed up, the idle will bounce back and forth from 1000-1500 rpm, and it is SUPER annoying.

[iamsam]

also, wrong section for this thread. There is an M42 technical section.

[Simon S]

should probably mention vacuum lines.
They dry out, crack, and cause leaks over time.
Check the simple stuff first..
Run some searches.

[immajackuup]

you assume correctly.

My M42 does this too, but only when it is brutally cold out. When i start my car in the morning, it's fine, and by the time the car is warmed up, the idle will bounce back and forth from 1000-1500 rpm, and it is SUPER annoying.

having the same thing as you

also, wrong section for this thread. There is an M42 technical section.

sorry i'm new,just got my e30 318is for free.

should probably mention vacuum lines.
They dry out, crack, and cause leaks over time.
Check the simple stuff first..
Run some searches.

all the hose have been replace from the previous owner and of course i search before i ask people.
another question about the icv,there is a arrow on icv should it be point up toward the hood or down? also how do i clean icv because it seem the only way to clean is spraying brake cleaner inside icv hole. for honda you can take the whole iacv apart.:)

[kid325e]

Not trying to be a dick but pick this book up if you get a chance. It'll make your life a lot easier for things like this. Very nice to have just for reference. http://www.amazon.com/BMW-E30-Servic...3860468&sr=8-8

[immajackuup]

Not trying to be a dick but pick this book up if you get a chance. It'll make your life a lot easier for things like this. Very nice to have just for reference. http://www.amazon.com/BMW-E30-Servic...3860468&sr=8-8

was thinking of buying that to save me the trouble in the long run.