Question about Chevrolet S 10

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Got a 2002 chevy s-10 4.3 . Had the fuel pressure checked last friday they said it was loosing pressure sometimes. Hasn't been wanting to crank lately.Run route today got threw and went to crank it and it just want. Can't hear the fuel pump coming on either. But also when i switch it on can't hear the relay switch under the hood click. Could it be that or probably gotta put another fuel pump?Thanks Chad

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  • 10,010 Answers

Its more likely the injection spider under the plenum. very common issue on those. does it run rich and smell a lot when it ran?? theres your answer not the pump.

Posted on Aug 01, 2017


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Posted on Jan 02, 2017

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SOURCE: cranks but no start

check the fuses inside on the right hand front kick panel

Posted on Aug 20, 2008

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SOURCE: Location under hood for fuel pump relay on 2002 Mazda Millenia S


Posted on Mar 11, 2009

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SOURCE: jeep won't start until a clicking sound comes from fuse box

The click you hear is the fuel pump relay. It gets its signal to energize from the PCM.If you have a faulty Crankshaft Position Sensor, the PCM will not work. Check for a bad fuel pump relay and also all of the other sensors: Camshaft Position Sensor, MAP Sensor, Idle air Control, Intake Air Sensor,etc.

Posted on Apr 27, 2009

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SOURCE: 01 chevy blazer fuel trouble

replace the fuel pump electrical wire harness.

Posted on May 25, 2009

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SOURCE: No Fuel To Throttle Body On A 1991 Chevy Blazer S-10, 4.3L

ok, well as for the relay, yes there is one in your under hood fuse box....or inside the drivers door...but if you don't hear the pump, fear the worst, it may be dead.....happens ALOT.....check and change the relay, about $10, then if nothing, time for a new pump.

Posted on Feb 15, 2010

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I just have one suggestion, after what all your mechanic already did. I would want to know the fuel pressure reading WHEN IT WON'T START. So you would need a fuel pressure gauge handy, for that time it won't start. Hook up the gauge and turn the key on- if at 59 psi, when the engine won't start, then you know the fuel pump and the relay sensor is not the problem. And so probably not a fuel problem, although you haven't checked the injector circuit, but likely that wouldn't exhibit a problem as you have.
So if not a fuel problem, check for spark when it won't start. Maybe the problem is in the ignition system. Buy a spark tester from a parts store, use it when the **** engine won't start- simple and easy check of your ignition system.

Mar 14, 2017 | 2002 Chevrolet Malibu

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4.3 94 chevy cranks sometime most time it wont change plugs , wire, dist,rotor button,crank module...getting good fire .. and fuel but still wont crank

check the fuel pressure to make sure it reads 55 psi when you turn the key on. if not the pump may be to weak to open the poppet valves on the injectors.

Jul 27, 2011 | 1994 Chevrolet S-10

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I have a 2002 Chevy S-10 that will not start. Fuel pump hums, engine cranks well, just will not catch. Problem only occurs when temps fall below 30 degrees F. Iso-Heet was added to last tank of gas,...

when engine is cold to requires more fuel and spark to start. coil or spark plug wires. fuel pump is still a possibility even though pressure is in range may not be just enough

Dec 09, 2010 | 2002 Chevrolet S-10

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Fuel pump on chevy s10, 2002, v6 has gone out. how do i know that is the problem, and how do I change it? Could it be a fuse, or fuel filter

try tapping the fuel tank while someones cranks the engine to vibrate the fuel pump or spray starting fluid into throttle body ti see if it diagnose properly you need a fuel pressure meter and test light at fuel pump harness to see if you have voltage while cranking.

Oct 18, 2009 | 2002 Chevrolet S-10

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1987 s10 blazer will start sometimes.Sometimes it will crank for a while ,then it will crank and feel like it ran out of fuel .Replaced fuel pu mp last year . cannot hear hum of pump ,but the truck starts.

Check Static Fuel Pressure engine off , Should be about 10 to 13 psi this will determine if Fuel Pressure Regulator is faulty , if pressure is bleeding off it will be hard starting... If you find a bad regulator then replace it with new... Bleed pressure off by removing fuel tank filler cap and by releiveing it at the fuel rail before the TBI unit....

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2002 Saturn Vue won't start

Non-start situations basically boil down to two things: No Fuel, or no spark.

I you are looking to throw a part at it, start with the crank sensor. They are cheap and not too hard to replace.

A full diagnostic approach would be to determine if it was a fuel or a spark problem. Check fuel pressures with a fuel pressure test guage: Low fuel pressure indicates a bad fuel pump or a bad fuel presssure regulator. Lastly on the fuel side, check t see if the injectors are getting a signal to fire, usually done with something called a noid light, I believe.

Spark diagnosis begins with first determining the condition, then finding the cause. Bad coil, loose wires, even the crank sensor are all suspect. A good repair manual with a flow chart is probably the best procedure to follow.

In my case, my manual only had a passing reference to the crank sensor and no diagnostic procedure to test it or even lead me to it. I found the solution through extensive web searches. Once I replaced it, all was well.

Dec 19, 2008 | 2002 Saturn VUE

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