Why does MY BMW 98 528i rough idle?
Why does MY BMW 98 528i rough idle?
Had same issue on my 98 528i. Rough idle on cold start then one day it just would not start. Replaced the MAF and car started but the rough idle remained at startup. De-carbed the throttle body and ICV, good for a day then by the second day rough idle again.
How is the idle on a BMW M3?
>Disconnected MAF and engine ran great, so though MAF bad, so bought salvage yd MAF for $150 and things fine, at first, then CEL. At this point with CEL on, idles fine, and press on throttle and response is lumpy.
Is there a problem with the BMW OBDII?
OBDII showed neg STFT short term fuel trims B2 but no clear indication of problem. Press on gas and no/little engine response until throttle reached further down. >Thinking fuel filter so replaced. Then the car runs but lumpy acceleration with slow rev of engine.
Is there a problem with my BMW car?
Running lean (says codes also no backfires out exhaust) >Next morning ok start up but next start up, would crank but no ignition, tow back to shop! >Next morning shop starts car, no issue!? OBDII showed neg STFT short term fuel trims B2 but no clear indication of problem.
Had same issue on my 98 528i. Rough idle on cold start then one day it just would not start. Replaced the MAF and car started but the rough idle remained at startup. De-carbed the throttle body and ICV, good for a day then by the second day rough idle again.
>Disconnected MAF and engine ran great, so though MAF bad, so bought salvage yd MAF for $150 and things fine, at first, then CEL. At this point with CEL on, idles fine, and press on throttle and response is lumpy.
OBDII showed neg STFT short term fuel trims B2 but no clear indication of problem. Press on gas and no/little engine response until throttle reached further down. >Thinking fuel filter so replaced. Then the car runs but lumpy acceleration with slow rev of engine.
Running lean (says codes also no backfires out exhaust) >Next morning ok start up but next start up, would crank but no ignition, tow back to shop! >Next morning shop starts car, no issue!? OBDII showed neg STFT short term fuel trims B2 but no clear indication of problem.
