Question about 1994 Chevrolet S-10 Blazer

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1994 S-10 Blazer turns over but will not start.

I just put a new fuel pump in my neighbor's Blazer and the truck will not start. I can spray starting fluid into the intake and it will fire for a few seconds but then dies. I have verified that there is fuel at the manifold but have not verified the pressure. The wires from the pump to the top of the sending unit were melted and the plug on the fuel pump was melted. I can hear the pump running when the truck is turned over but the truck just won't start.

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Check the fuel pressure there may be a block at the regulator also check the amp draw on the fuel pump, a short to ground could be the source of your problems with the melted wiring

Posted on Jul 24, 2009

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My 95 blazer will onlt start when i spray fuel into the plenum and then it runs great


does pump run a couple seconds KOEO (key on engine off)? - put a light on pump + wire (pink?), I think these have a "back-up fuel pump power" through oil pressure switch?

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You may have a fuel pressure problem or the secuirty system has locked you out for some reason due to a false signal or failed part. Do you have any electronic engine control codes? Is the Security light on in the instrument cluster and fishing when you try to start the truck? To check the fuel issue get a can of spray starting fluid from the auto parts store or any hardware store and spray it into the air intake of the engine while someone cranks the engine, if it starts you may have a defective fuel pump, the pump is located inside the fuel tank, the fuel tank must be removed to access and replace the pump.

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I have a 1993 chevy s-10 blazer 4.3 vortec 4x4 , Was driving and it just died, when i went to restart it , it wouldn't start, i noticed i didnt hear the fuel pump come on, I did a test and bye passed...


You need to check the crank sensor, this controls tthe injector pulse. If it will attempt to start with alternate fuel but not on its own, it sounds like the injectors arent pulsing, so your not getting fuel. Try the crank sensor first.

Oct 06, 2011 | Cars & Trucks

1 Answer

Car will not start at different times. New battery car turns over but will not start. If I put my foot down to the floor and turn the key it will start then most times. Did spray something in the carb...


The air intake is were you neighbor spray it.Here is a list of possibles=weak fuel pump=dirty fuel injectors=throttle positioning sensor=fuel regulator Valve=leak in fuel line=you could put some injector cleaner through it and change the gas to the higher octane ant the gas pumps for a couple of tanks that will help allot.

Feb 07, 2011 | 1995 Chevrolet Corsica

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I have to spray starter fluid in the intake to start my blazer


that indicates you have a fuel supply problem. a plugged fuel filter, or a fuel pump thats loosing its pressure. usually when you put starting fluid in throttle body. and it starts. thats a fuel problem.

Jan 13, 2011 | 1996 Chevrolet Blazer

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My 2001 blazer 4wd does not want to start. could it be the fuel relay switch? It has a new starter,fuel pump,oc2, spark plugs and fuel injectors, ...problem is i turn the key and i hear the engine trying...


The first thing I do is spray ether in mass air flow manifold and see if it starts. If it starts with ether I know I have a fuel delivery problem. The PCM providing less than 12 volts to the fuel pump results in low discharge pressure. You could also have a bad pressure regulator or a clogged fuel filter.

Jun 03, 2017 | 2001 Chevrolet Blazer

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I have a 99 Blazer with a starting problem. Fuel pressure is 48-52 psi with key on, after I get it started with starting spray it works at 58-62 psi. New battery, fuel pressure reg., alt, tune-up. Could it...


gm did a great thing of not letting the vehicle start until at least 55psi is reached. your pump is basically out. but if needed for emergancy before put in try to cycle key with out turning the stater over 3 or 4 times. it should build just enough pressure to get it running without starting fluid.

Oct 31, 2009 | 1999 Chevrolet Blazer

1 Answer

Blazer is getting fuel but wont start


check injectors may have a bad one. check timming.

Jul 02, 2009 | 1999 Chevrolet Blazer

1 Answer

1999 blazer wont start??


Your battery is either faulty or ther is a parasitic drain, have it checked out at parts house. With a good battery installed, spray some starter fluid into intake housing. If it starts, then dies, you have fuel pressure/delivery problems. Can you hear the fuel pump run when you turn on the key? Hope this helps.

Dec 18, 2008 | 1999 Chevrolet Blazer

1 Answer

Blazer 98 4x4


I would check the basic things first. Battery Terminals, the Battery itself, gas in the tank, then the probable cause a faulty fuel pump. A quick check of this is to take the air horn t-nut off the 3 inch t handle screw which holds it and spray starting fluid in the throttle body. Do not open the throttle body like an old careburator just spray it in their, put the air horn back on and if it starts it's a probable fuel pump. You can also try to turn on the key three times but do not start it those three times just see if the fuel pump sounds like it's working. On the third try turn the key fully on and if it starts it's a probable fuel pump. If so Google under 100 dot com and they have blazer fuel pumps for 60 or 70 dollars. A fuel pump from an auto parts store will cost you from 250 to 300 dollars. I wish you the best of luck becuase I have replaced four fuel pumps in my own blazer. Good Luck!!!

Sep 06, 2008 | 1998 Chevrolet Blazer

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