1989 740 FUEL PROBLEM HELP PLEASE

BARRYALLEN50 · Post by **BARRYALLEN50** » 14 Sep 2007, 19:54

1989 740 GLE 98000 MILES. CAR JUST STOPS RUNNING. FUEL CUT OFF. SOMETIMES I CAN PUMP THE PEDAL AND IT WILL START GOING AGAIN. REPLACED THE FUEL PUMP RELAY. THIS WAS NOT IT, ALL FUSES ARE OK. IM THINKING COIL OR FILTERS. SOMETIMES VERY HARD TO START AFTER IT CUTS OFF. GETTING DANGEROUS TO DRIVE NEVER KNOW WHEN IT WILL CUT OFF. ANY HELP PLEASE. SORRY ABOUT THE CAPS KEY STUCK.

wojeepster · Post by **wojeepster** » 14 Sep 2007, 20:50

do you know the fuel is cutting out? When the fuel pump gets worn it will warm up expand and the brushes no longer touch. When problme occurs tap on fuel pump with somthing then see if it willl start. If this has no effect check for spark, check for fuel at spark plugs, go from there.......

BARRYALLEN50 · Post by **BARRYALLEN50** » 14 Sep 2007, 21:30

IT ALWAYS RE-STARTS . IF I PUMP THE GAS PEDAL -- WHEN COLD THE CAR RUNS GREAT. IT SEEMS THE GAS JUST CUT RIGHT OFF. NO WARNING --HOWEVER SOMETIMES THERE IS OVERRUN THEN I HAVE TO SHUT THE KEY OFF THEN RESTART.

bugeye58 · Post by **bugeye58** » 15 Sep 2007, 12:54

Pumping the pedal has nothing to do with it. All you are doing is flapping the throttle plate!
Jeff

BARRYALLEN50 · Post by **BARRYALLEN50** » 16 Sep 2007, 12:34

AS SOON AS THE CAR WARMS UP IT CUT OFF. TESED COIL ITS OK REPLACED PLUGS WIRES AND DISTR. CAP. FUEL PUMP RELAY REPLACED. STILL CUTS OFF WHEN WARMED UP. RUNS GREAT WHEN COLD. I HOPE THIS WILL HELP SOMEONE THAT MAY HAVE A SOLUTION TO THIS. REALLY WEIRD PROBLEM. THANKS

outofworkjoe · Post by **outofworkjoe** » 16 Oct 2007, 08:35

Have you replaces you fuel pump relay??Go pick up one from junk yard.

tripleb · Post by **tripleb** » 17 Oct 2007, 20:02

The coil and fuel filter will very rarely fail, if ever.

Do you have any trouble codes?

I believe this has an RPM sensor, that might be it.

Other common possibilities are the MAF sensor, fuel pump, ignition power stage, and the engine control unit for starters.