Author Topic: idle problems (Read 2718 times)

91cabrio · « **on:** October 24, 2010, 06:54:24 PM »

I have a 91 318ic that will crank, but fights to stay on unleass i give it gas i can get it to rev about 4000 rpms, then l take my foot off gas it will idle perfect at about 700rpms. as soon as I tap gas it stalls to the point it wants to shut off. I have replaced the fuel filter, new plugs, the vacuum lines. i was thinking the fuel pressure reg or fuel pump, it may not be pushing out the right volume. Anyone have any ideas or had this happen to them.

Walter
602 614-9312
:confused:

bmwm42 · « **Reply #1 on:** October 24, 2010, 07:17:27 PM »

Tps sensor maf sensor

DesktopDave · « **Reply #2 on:** October 24, 2010, 09:22:01 PM »

I'd check the AFM & wires. Should have a nice smooth resistance curve on pins 1 & 2 IIRC. I can get you the full test diag if you like.

Get the codes too - let us know what a stomp test tells you.

///m42 sport · « **Reply #3 on:** November 06, 2010, 10:15:38 PM »

like the other said, I had the same thing happen and it turned out to be my ignition coil. One was bad.

91cabrio · « **Reply #4 on:** January 12, 2011, 09:20:14 PM »

Thanks turns out the fuel pump went bad 13lbs