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When I turn on the ignition the fuel pump does not work and I cannot start the motor. What could be reason and remedies\\

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Maybe u need a fuel pump

Posted on Nov 13, 2010

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The engine just dies when going down the road and when I try to re-start, the motor won't turn over. Why is this happening?


You didn't tell us is you have the 4 banger, 3.0 or 4.0 V6 engine.

The engine can stall for a number of reasons. For a engine to run it requires air, fuel, compression, and spark at the proper time. I doubt air is the problem. The fuel pump may be cutting out (bad pump, bad relay, bad pump wiring inside the tank (my 93 3.0 Ranger had the last issue). The engine stall could be a lack of fire to the plugs. A bad (cracked) coil, ignition module problem, EFI computer or wiring problem, or maybe an ignition switch problem. The starting system is somewhat isolated and pretty much separate from the ignition system in general. This makes me suspicious of your ignition switch.

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94 chevy s10 2.2 will turn over but will not start it has spark and gas the fuel pump is working ive replaced the coil packs ignition module and crank sensor and still nothing


did you prove ignition try a timing light to verify its flashing to speed of motor , next try a little spray of starting fluid, if it starts then you know its a lack of fuel problem ,there is no reason that you wouldn't get it to do something.if it has spark and fuel

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My 96 volvo 850 gtl2.4L ENGINE CRANK OVER BUT WONT START I REPLACED THE INGNITION COIL \ POWER STAGE WITH NO RESULTS.PLEASE HELP


Reasons for engine turning over and not firing are simple. Spark or fuel. If you've changed the coil packs then chances are it's a fuel issue. Get in cab and turn ignition to second position whilst listening to back seat. You should hear the faint noise of the fuel pump working. If you can't, I suggest you firstly check your manual to find the fuse/relay for the fuel pump and check that. If they are fine, you need to replace fuel pump.

If you can hear it working and it still won't start, remove the fuel line going to injector rail and point into a jar whilst someone turns engine over. You should have fuel coming out. If this is fine, go back to ignition, remove a spark plug and turn engine over checking for a spark.

My bet is your fuel pump has packed-up. Good luck diagnosing.

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Car won't start but the motor is turning


CHECK FOR SPARK AT SPARK PLUGS AND TURN IGNITION SWITCH ON POSITION LISTEN SEE DO YOU HEAR FUEL PUMP TURN ON 3 SECONDS IF NOT CHECK FUEL PUMP FUSE AND RELAY. IF ALL IS GOOD.HAVE VECHICLE SCANNED FOR FAULTY PCM - FAULTY IGNITION MODULE - FAULT IN THEFT SECURITY SYSTEM.SCAN FOR FUEL PUMP AND CRANKSHAFT SENSOR FAULT.REASON YOU NEED VECHICLE SCANNED IT WILL HELP LOCATE PROBLEM QUICKER TO KEEP FROM BUYING A LOT OF NEW PARTS YOU DONT NEED.

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1 Answer

I put a new fuel pump in my 1998 pontiac transport with the 3.4 motor and it still wont start. it has spark and cranks over but wont start


remove the fuel line from the fuel rail and turn the ignition on, if the pump is working there should be fuel coming from the hose, if there is none go back to the fuel filter and remove the inlet hose from the fuel filter and turn the ignition on, if fuel comes out from there your fuel filter is blocked, if there is no fuel your pump is not working

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1 Answer

My 2000 chevy S10 wont start I changed the battery and it ran fine for 2 days now it will turn over but won't start


Check Fuel Pressure. First turn key to on position (without starting) and listen for the fuel pump motor. If no motor sound, your fuel pump is not working. Check fuel pump fuse and relay. If fuel pump works, check for pressure at the fuel rail (schrader valve on fuel rail for pressure testing). If no pressure, or not enough, fuel filter might be clogged or fuel pressure regulator may not be working properly. IF fuel is not the problem, start checking electrical, such as ignition control and proper spark to plugs.

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1 Answer

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1. use scanner to find out if there's trouble code.

2.. it's not clear if the starter (motor) turns as you try to start the engine, if not, check starter motor including intermittent (maybe) problem with the ignition switch.

3.if starter motor turns everytime you try to start: check the electrical ignition system: coils & spark plugs

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Was the old fuel pump bad? It might be worth the cost to replace the ignition switch. The wires to the fuel pump would be a second guess if the old pump was bad and burnt the wires before the fuse went. When you eliminated the fuel pump you also eliminated the wires to the pump and it started. Then you replaced the pump, but not the wires. The ignition switch is the other end of the circuit.

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1 Answer

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If you hear the relay click, but no pressure at all then it would be the fuel pump needing replacement

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I would guess that the 12 volts supplied to the fuel pump comes for the damaged ignition and is no longer getting the 12 volts to turn it on. Seems reasonable to me..

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