Question about 2005 Chevrolet Silverado 1500 2WD

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Not getting any fire on a 2005 chevy silverado 4.3L

Coil has been changed crankshaft position sensor changed and everything obvious changed

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  • natasha lyell
    natasha lyell Feb 15, 2014

    spark plug wires are brand new like i said everything obvious has been changed and checked



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Do you have power going to the coil, and a ground signal coming from the distributor ?

Posted on Feb 15, 2014


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SOURCE: 98 silverado 5.7L camshaft position sensor


Posted on Oct 23, 2009

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SOURCE: 2000 Chevy Silverado 4.3 will not start.

I agree, disconnect the battery, and try resetting the CPU. Also if it got wet then there could be some random wire shorting out. Your CPU is located just above the wheel hub closest to your battery inside the engine cmptmnt.

Posted on Jun 21, 2013

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Engine cranks but will not run. 89 chevy beretta 2.8

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2004 Chevy HD 2500 ext cab v-8 vortec 6.0 liter 2 wheel drive. Let's see tons of problems misfire on cylinder 5 replaced coil(the issue), still runs like a beatin dog with one leg trying to chase the...

The sensor for the crankshaft position may be loose or misaligned. You may have a rust spot on the crankshaft interferring with the ability to pick up the #5 position.

Check out your alternator as stray electrical voltage will interfere with the pulses needed to fire individual plugs. Try WD40 on the wires to the coils(plugs) as stray voltage may jump to another plug.

You fixed what you identified, but how about injector pulses? Could easily misfire and give same effect as sparkmiss. You may need to get loaner tools from Autozone or others to test injectors with the lightbulb you insert in the injector harness.

I hope my solution is helpful.

Mar 03, 2012 | 2004 Chevrolet Silverado 2500HD

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did you check for fuel pressure at the fuel rail?
listen for the fuel pump when you turn the key on
did you change the wire harness when you changed the pump?

Sep 25, 2011 | Cars & Trucks

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98 silverado 5.7L camshaft position sensor


Oct 23, 2009 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

Need to know what fires coil 1995 mercury sable both wires to coil have power when key is turned on car cranks no spark from coil new coil what gives the coil extra power to fire

what engine? 3.0L 2 Valve? 4 Valve?
3.4L SHO engine?

The PCM (engine computer) fires the coils, but it is never the cause of a problem. I suspect it is the crankshaft position sensor on the front of the engine by the crank pulley. easy to change.

Crankshaft Position Sensor The crankshaft position sensor (CKP sensor) (6C315) is a variable reluctance sensor triggered by a 36-minus-1 tooth trigger wheel located on the crankshaft pulley and damper. The signal generated from the crankshaft position sensor is called the crankshaft position (CKP) signal, which provides base timing and crankshaft speed (rpm) information to the ignition control module (ICM) (12K072). Base timing is set at 10±2 degrees before top dead center (BTDC) AND IS NOT ADJUSTABLE. The powertrain control module (PCM) (12A650) will use this information with the spark advance information to determine ignition coil (12029) turn on or turn off time.

Sep 15, 2009 | 1995 Mercury Sable

1 Answer

No fire to coil from coil on 96 model Jeep Grand Cherokee.

You need to put the harmonic balance for the 96 jeep on this motor,then put the crankshaft sensor on for the 96 jeep on the vehicle,this should fix you up.The crankshaft sensor and the harmonic balance have to go together.If I can be further help,let me know.>>

Aug 18, 2009 | 1996 Jeep Grand Cherokee

2 Answers

I have a 1991 chevy truck, I am getting no spark. I have changed the ECM, distributor and coil. still no results. I have no idea of what to do.

check to see if your truck has a crankshaft position sensor, its usually located behind the harmonic balancer or right near there, if the sensor went bad or if the wiring got messed up there will be no signal to the ecm telling the ecm when to send spark to the coil. the crankshaft position sensor is responsible for telling the computer when to fire the spark plugs based on rpm and timing. check the wires on the crankshaft position sensor, if they look fine, replace the sensor, hope this helps!

Jun 29, 2009 | 1991 Chevrolet Silverado 2500

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