Question about 1999 Chevrolet Blazer

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Take a fuel pressure gauge for a ride --tied to wipers

See if your loosing fuel pressure when it quites ,or see if
that data is avail on scan tool

Some brands of pumps don't last long,so I heard & see from
other experts on here

I guess a relay for fuel pump could have a bad primary coil in it

Try switching them around-- to something else you don't need
all the time

Posted on Dec 02, 2012

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While driving 99 blazer, the gauge for temperature and oil just shuts off and restarts while driving. What is the problem?

Posted on Feb 13, 2013


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 6674 Answers

SOURCE: 96 chevy 4.3 with 249000 km that just wont start

Have you confirmed fuel pressure at rail?

Posted on Oct 30, 2008

  • 6 Answers

SOURCE: 92 Chevy Suburban Electrical Fuel System

Check fuel flter at fuel pick-up intank (looks like a small wire sock). Remove fuel filter and fitting at fuel rail. Blow out fuel lines w/about 35lbs air press. Ck electrical @ relay - should be 4 connectors - one is key on hot/one is always hot/one is ground and last is hot to fuel pump. Good Luck

Posted on May 03, 2009

  • 1 Answer

SOURCE: 1997 Chevy Blazer wont start without starter fluid

Check fuel pressure it could be low regulator pressure

Posted on Jun 28, 2009

  • 61 Answers

SOURCE: Still looking for assistance for a 2000 3500 Chevy

could be the injectors are worn, the fuel is not atomizing. dribbling more than spraying.

Posted on Jul 27, 2009

  • 1382 Answers

SOURCE: "Cranks, but won't start". Replaced fuel pump, CKP, ICM & nothing

If the engine cranks over normally when you attempt to start you car, but the engine does not start, the problem may be NO FUEL, NO SPARK or NO COMPRESSION. The engine needs adequate fuel pressure, a properly timed spark and normal compression to start.

1) To find why the engine won't start, remove the air inlet tube from the throttle body, push the throttle open and spray a small amount of aerosol starting fluid into the engine. Crank the engine. If it has spark and compression but NO FUEL, it will start and run a few seconds before dying. If it does NOT start, it probably has NO SPARK.

2)Another method to check for spark is to pull a spark plug wire off of a spark plug (if it has plug wires, coil-on-plug ignitions do not) and place the open end of the plug wire near a metal surface on the engine. Have a helper crank the engine while you watch for a spark. DO NOT hold the wire while doing this as it can shock you. If you see a spark, the problem is not spark, but most likely NO FUEL or NO COMPRESSION. If you do not see a spark, the problem is in the IGNITION CIRCUIT.

3)Proper fuel pressure is critical for fuel injected engines to start and run. You should hear the fuel pump inside the fuel tank buzz for a couple of seconds when the ignition is turned on (no buzz means the pump is not running and the engine is not getting fuel). You can smell the tailpipe for gasoline vapors after cranking the engine. If you smell gas, the problem is likely not fuel but NO SPARK. You can also remove the plastic cap and press the schraeder valve test fitting on the fuel rail to see if there is any fuel pressure to the engine (not a very accurate test because fuel pressure must be at a certain level for the engine to start, for that you need a gauge). Even so, no fuel at the fuel rail would tell you fuel is not getting to the engine..

Posted on Aug 27, 2009

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