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G ot a 1996 cavalier turns over but dont start when i turn ignition on i dont hear the fuel pump cycle an its not firing

Do u think it could be the ignition module or crank sensor

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Well, no.
The ignition system would not affect the fuel pump circuit.
I would suggest you check the fuel pump relay first and see if it has power and a ground signal from the computer.
Do you get a check engine light when you turn the key switch on ?

Posted on Dec 10, 2012

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psds4
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SOURCE: 1997 Chev Cavalier hard starting

it sounds like the check valve in the fuel pump is letting the fuel bleed back into the tank

Posted on Sep 23, 2008

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Does your battery go dead?

Posted on Dec 18, 2008

MrScary66613
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Have you had the Starter Checked out?

Posted on Jan 02, 2009

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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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I ran out of gas then i put gas in the car .now it want start .1996 camaro v6 3800 rs


You may have to "cycle" the ignition switch a few times to get fuel up to the fuel rails. Make sure the battery is fully charged. Turn the ignition switch to the RUN position (do not start yet). Listen to see if you can hear the fuel pump running. If you can hear it, turn the key of and wait about 15 seconds and turn the key to the RUN position again. Repeat this step one more time, the turn the ignition to START.

If you cannot hear the fuel pump running when you turn the key on, then you most likely lost your fuel pump when you ran out of gas. This is pretty common - especially if the fuel pump has a lot of miles on it. If this is the case, then you will have to replace your fuel pump.

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If you hear the pump, that is a very good sign.You can check the fuel rail test port for pressure. It is like a tire valve but on the fuel rail, just put rag on top and press the valve in. If there is good pressure then your problem is a bad crank shaft position sensor most likely. This sensor provides spark to ignition module, then to coil packs, plugs & wires. You can test the crank sensor with an ohmmeter to see if it has a good strong continuity reading.
You can also go to autozone.com and register for full free online repair manual for your vehicles.

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check to see if you can hear the fuel pump running.just cycle the key to the on position but dont turn over the motor you should hear a humming sound come from the fuel tank.if no sound check your fuses if all ok could be a bad fuel pump
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samboiv

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