Idle Prob

[mitch500]

i have a 1987 325 just curious if anyone knows problem but it does this.
i will start it up fine in the morning the rpm's will jump to about 650. after about 5 min driving or when the vehicle is warmed up the thing starts to idle anywere between 1000 - 1800 rpm's thanks.

[asubimmer]

icv?

[Jordan]

is it a 325i or a 325e?

[mitch500]

325 m20 2.7l

[MR 325]

Moving this to the CORRECT forum, thanks

[mitch500]

does anyone know

[skatefreak]

My 87 325is did something like that until I swapped for the 173 ecu and 89+ idle control valve and intake elbow.

[Brew]

Possibly the 02 sensor. Disconnect it and see if the problem goes away.

[bddog]

Maybe some idiot turned up your throttle set screw?

[RobertK]

Sounds like a vacuum leak.

[arsevader]

Sounds like a vacuum leak.

vacum leaks would be more of an issue when it's cold than when the car has warmed up.

[MR 325]

Maybe some idiot turned up your throttle set screw?

If the idle screw was touched the car would always idle the same ;)

[mitch500]

so im pretty sure its the idle air stabalizer will one work from a 83-87 533i they look exactly the same.

[BahnE30]

check the part numbers, realoem.com, is your friend, if they are the same then they will work.....

[Alluvium]

i have that too when i drive my car hard sometimes that happens