I've done alot of searching and tried a few things to no avail.
Car:1988 325is, no engine mods
When the car is cold the following occur:
1)Car idles low...around 450-500 rpm. Not a smooth idle, slightly rough.
2)Hesitates for a split second when I touch the gas
3)When I rev the engine it falls back below the idle point before returning to normal. i.e. I'll rev to 2000 rpm then lift off and the revs fall to like 300 (almost stalling) before returning to normal.
Here's what I've tried, suspecting it is running rich:
Changed Air Filter. Cleaned ICV (with electrical cleaner).
The car runs fine once warm (past about 1/4 temp).
The odd part is when I unplug the battery (resetting the ECU), the problems are then gone for about the next 3-5 hours of driving.
Car:1988 325is, no engine mods
When the car is cold the following occur:
1)Car idles low...around 450-500 rpm. Not a smooth idle, slightly rough.
2)Hesitates for a split second when I touch the gas
3)When I rev the engine it falls back below the idle point before returning to normal. i.e. I'll rev to 2000 rpm then lift off and the revs fall to like 300 (almost stalling) before returning to normal.
Here's what I've tried, suspecting it is running rich:
Changed Air Filter. Cleaned ICV (with electrical cleaner).
The car runs fine once warm (past about 1/4 temp).
The odd part is when I unplug the battery (resetting the ECU), the problems are then gone for about the next 3-5 hours of driving.
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