93 850glt

robt · Post by **robt** » 21 Aug 2011, 23:02

misha wrote:We MUST know if fuel pump is running before the car dies.

My advice is to ask somebody to listen for it's "noise" in the trunk or beside right rear wheel.

When we are sure that fuel pumps is ok,then we can go further.

fuel pump is still running when engine stalls
another thing it does is when i try to restart, it turns over normally then hesitates then turns over but wont start doing it several times while turning key

Post by **misha** » 22 Aug 2011, 10:07

Next thing you need to check is fuel pressure at fuel rail.

Sounds like fuel pressure is low.

robt · Post by **robt** » 22 Aug 2011, 14:31

misha wrote:Next thing you need to check is fuel pressure at fuel rail.

Sounds like fuel pressure is low.

ok,will try that and let u know,thanks for your help

robt · Post by **robt** » 24 Aug 2011, 00:47

robt wrote:
misha wrote:Next thing you need to check is fuel pressure at fuel rail.

Sounds like fuel pressure is low.
ok,will try that and let u know,thanks for your help

hi, checked fuel pressure reg, vac line was bad, fixed it now it is ok, i'm hoping that is all it was

Post by **misha** » 26 Aug 2011, 13:05

Well done!

Now...enjoy the ride!

robt · Post by **robt** » 26 Aug 2011, 19:21

misha wrote:Well done!

Now...enjoy the ride!

joy was short lived, still stalling once temp gets to normal. when running prior to warming up i can rev engine without a problem,every thing is normal

Post by **misha** » 27 Aug 2011, 11:10

I would check fuel pump relay.It can make troubles when it become hot.

Still no check engine light?

robt · Post by **robt** » 27 Aug 2011, 14:46

misha wrote:I would check fuel pump relay.It can make troubles when it become hot.

Still no check engine light?

ok,will try relay, no check engine light

Post by **misha** » 27 Aug 2011, 17:45

The only thing that bothers me is that check engine light is not on.It means that there is no problem with sensors,but sounds like its a failing Maf(because it stalls when the engine reach operating temperature).

You must know that even if check engine light is not on,there could be pending codes stored in engine ecu(port A2) & ignition ecu(port A6).I would check those ports again,just to be sure that there are not pending codes stored in ecu's.

There could be a few more things to check....if pending codes are not stored.

How's your battery voltage?Do you have problems like slow cranking when it sits overnight,dimmed headlights?Is alternator voltage in specs(13.5-14.4v)?

There is a "how to" jump a fuel pump relay on the forum somewhere.Try with "search" or simply pm Ozark Lee or Jblackburn for help.