Im new to this site and would like your help. Ive a 1996 328i coupe, i recently put a new engine in well for the 3rd time to be honest. everything was fine for a day or two now all of a sudden it take longer to crank than normal, theirs a slight misfire when cold just as you push the Accelerator. It drives ok for about 5 mins till it heats up then just goes into a complete spamm. its loses all power and is misfiring continously all the way until around 5000rpm and then might lift slightly. Ive changed the coils with another set i had from previos engine and also the airflow sensor. Any ideas what might cause this irractic behavior.
There are so many possibilities but coolant temp sensor comes to mind for the bad performance at operating temperatures. This appears to be a thermal problem where the ECU is getting bad information but not enough to set a CEL.
Did you convert this to OBD1 and if so did you swap the temp sensor and, immsmc, the oil temp sensor? There are two sensors that use the exact same plug and are easily crossed. You may want to refer to the bentley to be certain. I don't remember the specifics.
Tryed everything today, changed the inlet manifold, 6 more coils, coolant temp switch, everything bar what i should have changed in the first place, as it was delaying starting. Turned out to be a faulty crank shaft sensor, i swaped it from my old engine and bang it started perfect and is now running 100% no misfire,s nothing.
__________________ 1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded I am Captain Obvious
ive goot the same problem with my 328is i just bought, here the crank sensor was ganked at the lot that i bought it from before i bought it!!! anyways i cant find where it plugs into! i know where it mounts on the block but i cant find where the lil bastard plugs into the wire harness!
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.