Question about 1991 GMC G3500

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1988 gmc 5.7l tbi engine starts and stall after about 2-3 second of starting what could be making the fuel cut-off which is what i think is happening, how do I resolve this problem? checked ground signal to injectors from computer, it was blinking, changed the fuel filter, checked oil pressure switch,temp signal, has a spark to spark plugs from coil, computer appears to check out right what could be making the fuel to go low or just intermittently die

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Very common sign of a bad fuel pump. If the fuel pump goes bad, or starts to go bad it starts shorting out and will make all the signs and symptoms that you are talking about.

Posted on May 27, 2011

Testimonial: "Today I already picked up a fuel pump when I install it tomorrow I'll know if that was the problem"

  • Terry Lawson
    Terry Lawson May 28, 2011

    today 5-28-11 I installed the fuel pump and my problem was resolved, thank you for your input

  • Jeremy Reddick
    Jeremy Reddick May 29, 2011

    No problem glad I could assist you in getting your problem fixed.

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1988 2.5E s10 no fuel


you mean,cranks ok, but will not start and no fuel , right>?
s10 no fuel. 1988 ( S10 blazer )
please do say , what that means.
1: car cranks and will not start. so must be out of fuel?
(over 50 causes, or better is 10 or less tests (ask)
2: same, and fuel pressure is 0 psi (spec.9-13). gauged.?
3: fuel dribble test?
4: sparks good so tired test fuel and it ran on test fuel ok? proving
loss of fueling>?
5: injector dead cranking, (eyeballs)

which was it?

1988 cars in the USA are BIG TIME TRANSITION year.
we went from CARBS to EFI.
2.5L (what is E)?
gear cam, roller HLA lifters.
your car, USA , is TBI engine,
TBI started on THIS car in 1985 (1/2 and 1/2)
Throttle body injection
an on all TBI engines, one can see it inject with eyes.
does it?
if not it can be the following things.
1: no fuel pressure, 9-13pis.
2: ECU is cutting fuel. Pressure good cranking.
2a: ECU is sending error for bad crank/cam sensors, and cuts fuel.
2b: ECU sees rpm or tacho line dead.
2c. ECU sees TPS sensor output as 4v or more cranking, this cuts all fuel.
3: if ECU is happy, it sends 12vcd to the pump, cranking.
all tests must be dont cranking or chase tail.

Jun 17, 2014 | 1986 Chevrolet S-10 Blazer

1 Answer

I have a 1992 gmc jimmy s15....it will turn over and getting fuel and getting fire but will not crank. whats the problem? I have replaced the fuel pump, fuel relay, injectors,pressure regulator, dist.cap....


did you replace spark wire 1 by one,? if not bingo, you layed them down wrong.... (did car just die, by self or after a tune up?)
4.3L V6?

please stop throwing parts, you rich>? (60k tune up excepted always)
the EFI engines will not put out fuel if spark is dead.
what does getting fuel mean?
1: injectors squirt?
2: the cracked open rail plug dribbles?
what?
3;spark plug tips wet,
4: black smoke out tail. what/?
it's a no start, cranks perfect car, you keep saying no crank.
A car that can not crank and can never be started unless push started,
with a M/T STICK gear box.
ANSWER: ?
seems to me its flooding. , no>? soaking wet spark plug tips?
when EFI , floods a car , WOT cranking clears the flood.
Wide open throttle, its in you operator guide, RTM.
so if flooding, what i do us cut power to the fuel pump
the crank it dry. (black smoke out the tail, and then sputters an runs and stalls)
then, i try only test fuel. that is right,, no fuel pump power.
and make sure my engines sounds perfect with just test fuel.
if that is all true runs on test fuel,
then the problem is FUELING ONLY>
all in the span of 10mins work.

see scotty do that here.
http://www.youtube.com/watch?v=064Ilsz8Fzg&feature=player_detailpage#t=1

this is a very old car is this a TBI car, a very old single injector
engines or MPI , multipoint injection.

read the wiki, see all those engines.
and EFI
which one do you have.

http://en.wikipedia.org/wiki/GMC_S-15
yours is LB4 or L35 engine?
APPLES and ORANGE different. ! TBI/ MPI.

Oct 08, 2013 | Cars & Trucks

1 Answer

I have a 1988 GMC 1500 305 the problem is when I drive for 20 min or more and shut it off I cant start it for 30 min it has to cool down before the fuel pump will kick back on so I am lost can anybody


When that happens try flammable brake cleaner in the throttle body.If it fires up.you know it was not getting fuel.If it doesn't it is an ignition problem...Cuts.your choices in half.

Jun 03, 2012 | GMC Sierra 1500 Cars & Trucks

1 Answer

1988 3.8 olds cutlass Ciera stalls, no spark until it cools UNTIL


Is this a carberated or a TBI type fuel system . if it is TBI look to see if your getting fuel if not you will need to change the ignition module

Aug 28, 2009 | 1988 Oldsmobile Cutlass Ciera

2 Answers

89 GMC K2500 5.7L TBI not spraying fuel


have you checked the coolant temp sensor? it controls air-fuel mixture.

Jul 16, 2009 | 1989 GMC K2500

1 Answer

1988 gmc s15 2.5l 5spd/starts strong then dies


Have you tried replacing or testing the fuel pump and/or filter?

Feb 25, 2009 | 1988 GMC S-15

2 Answers

1988 F-250 460 engine stalls when dribing down the road


On older, carbureted engines, cold stalling (and hard starting) is most often due to an automatic choke that is sticking, misadjusted or broken. Cleaning the choke mechanism with aerosol carburetor cleaner may free up the choke allowing it to work properly again. If the choke housing as an electrical heating element, the element may not be receiving voltage when the key is on, or the element may have burned out (check resistance with an ohmmeter).

Other causes of stalling with a carburetor include an idle speed adjustment screw that is set too low (turn screw to increase idle speed rpm). The engine may stall if the idle fuel mixture screw(s) are not adjusted correctly or the idle mixture port(s) are dirty or clogged with fuel varnish deposits (clean the carburetor and readjust the idle mixture screws for smoothest idle). Stalling can also occur is there are vacuum leaks in the carburetor, under the carburetor (bad base gasket), or any vacuum hose connections to the carburetor or intake manifold

Jun 22, 2008 | 1988 Ford F 250

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