e30 issues

[e30wavee]

Hey rev got a strange problem on my hands my 1990 325i is having some weird idle issues,car idles fine for about 5 minute then the engine light goes off idle starts to bogging just a bit ilde sits around 650, in need of HELP asap!..

[E30_fiend]

Vacuum leaks are def your issue. CHeck your intake boot first and also check your valve cover vent tube.


Taylor

[e30wavee]

i Checked the idle control valve,intake boot ,vaccum line that connects to the valve cover but never double checked the tps but I replaced that not to long ago.

[jlevie]

My first suspicions would be intake leaks and an aged O2 sensor (service life is 100k). A smoke test is the only way of checking all possible leak locations.