Question about 1989 Chevrolet S-10 Blazer

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1989 Chevy Blazer 4.3 TBI auto trans no fuel pressre

Car ran ok, shut off for a while, then would.not start. Has no fuel pressure.

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  • its420_us May 11, 2010

    Did you check your fuses?

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  • 8 Answers

Bad fuel filter or fuel pump

Posted on Jun 18, 2009

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1 Answer

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

1998 chevy blazer fuel pump is putting out 55 psi but no gas is getting to the cylinders


4.3 TBI (throttle body injector) You dont have a TBI you should be equipt with a CSFI people in the field call this the spider injector,they inject fuel into tubes for each cylinder , as for the fuel pressure it should be 54 psi to 60 psi,and this is for a 4.3, The CSFI system does plug up which causes rough idle due to the poppet valve or seat,to stick open or closed,Ive ran fuel injector cleaner that has been sucesfull maybe you can try that

Nov 08, 2012 | Cars & Trucks

1 Answer

When I try to start it the TBI dumps fuel in the motor and floods


You have a bad injector or a defective throttle control switch. You can test the throttle switch if you have a ohm meter, if you do get back to me and I will tell you how to test it.

Jun 01, 2010 | 1989 Chevrolet S-10 Blazer

2 Answers

1989 Chevy S10 Blazer won't start unless I pour fuel in the TBI.


Fuel pressure regulator. It regulates the fuel pressure you receive going to the injectors. All the injectors would not be bad, so you have to take a step back to the next component, which should be the regulator.

May 03, 2010 | 1989 Chevrolet S-10 Blazer

1 Answer

89 suburban. No spray from injectors after replacing ESC


The fuel pump should be in the 20s. Also it could be losing presure slowly. Leave the fuel pump pressure gage on for at least 2 to 3 hours to see if it is losing pressure - It's a start

Oct 14, 2009 | 1989 GMC Suburban

1 Answer

Engine starts but shuts down immeditately


1989 Chrysler 2.5 L Turbo has a duel hall effect pick-up in the distributor. It is possible that the pick-up is not working. A "start and stall" indicates that this may be the problem.
Another problem may be the fuel system. Check fuel pressure with key on... should be 40-50 psi on multi-port. 30-40 on TBI
PS If the auto shutdown relay quit then you would not get a start at all. PSS oil pressure will cause a similer problem

May 26, 2009 | 1989 Chrysler LeBaron

2 Answers

1990 chevy camaro with a rebuilt 350 Tbi


fuel pressure isnt right.. need to get a fuel pressure regulator so you can regulate the gas flow..

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