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no spark, low fuel pressure


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Posted

Ok...here's the kicker...I thought it was just a fuel pump on my GP, but it's a little more advanced

 

I'm getting barely any fuel pressure and no spark, it turns over continuiosly to no avail, and never threw any sort of code before

 

I thought it was just the fuel pump, but me and my neighbor tried to get it started with starting fluid for the past hour, it won't fire at all..

 

any ideas

Posted

No spark? hmm, bad crank position sensor, or bad ignition control module, or bad coil(s). No spark out of any of the 6 leads?

 

Low fuel? Clogged fuel filter, bad fuel pump, bad fuel pressure regulator.

 

Dont know what you have replaced, so i dont know what to suggest..

Posted

ok...coils and ICM are only a few months old

 

as for the fuel filter, i was going to replace that just to make sure

 

and as for spark, i'd have to check more closely, i only assumed no spark since it wouldn't fire off starting fluid

 

what size wreches will i need for the fuel filter? just so i know before i go out there

Posted

I would also suggest taking off your oil cap, looking in the cap at the rocker in there, and have someone turn it over. If it moves, at least your timing chain is still attached. If it doesnt move, well.....

Posted

Actually, I think it could be either quick disconnect or wrenchs. My 90 TGP does not have the quick disconnect..

Posted

i've always used a set of vice grips and a 16mm to get at the fuel filter.

Posted

haha sorry...i wasn't the one wrenching on it

 

I can't belive you guys let me just stand around...next time give me something to do :lol:

Posted

took me a whole 5 minutes to change the fuel filter :lol:

 

boy did that make a difference....i have insane fuel pressure now, but for some reason it still won't start

Posted
took me a whole 5 minutes to change the fuel filter :lol:

 

boy did that make a difference....i have insane fuel pressure now, but for some reason it still won't start

 

Is the fuel pump running? When you put the car to the "on" position does it run and prime for a few seconds?

Posted

yep it runs...like i said i have plenty of fuel pressure

 

as for spark...i dunno yet

 

i'll check some more stuff over in a bit, i need a break :lol:

Posted

righto...took out a plug and set it on the frame so it would be grounded...cranked the engine and got nothing

 

so there's definitely no spark

 

ICM/Coilpacks are maybe 6 months old, tops. So i dunno what to do next

Posted

ROTFL I had to! sorry!!!!

 

You must roll the engine forward.

 

It is below the alternator on the 3.1. and be careful, the knock sensor is right by it,m and is is a very good idea to disconnect the plug from the knock sensor.

 

If you wait till I visit, I will bring a rachet strap.

Posted

well i got the bolt out for it, but the damn sensor will not come out of the block

Posted

spin it spray it with carb cleaner and just keep on spining it slowly try to ease it out.

Posted
well i got the bolt out for it, but the damn sensor will not come out of the block

 

They break really easily, there is a write-up in FAQ's. I say take off your ICM, and at least get it checked.

Posted
IT'S ALIVE!

 

so what was it???

 

....and I am PISSED that you got your fuel filter off so easily :lol:

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