Key in on/run position, fuel pump primes and all accessories work. Turn to start, no reaction from starter. Currently I start it by shorting the battery terminal on the starter to the solenoid terminal, fires right up, so that tells me the starter is fine. (Right?) Tried a new ignition switch but it does the same as the old one. Do I look for an open in the wire from the switch to the starter? Do I replace the park/neutral switch? Any help would be appreciated. Thank you.
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Is the anti-theft light lit on the instrument cluster ? Won't start how ? When you turn the key to start , what happens ? Nothing ? This would be a No crank - no start condition . Now if you turn the key to start and the starter engages and spins the engine and it doesn't start an run , this is a engine cranks no start condition ! Now which is your problem ?
There are two fuse's IGN A fuse 40amp and IGN E fuse 10amp ,both are located in the under hood fuse/relay box . Also there is starter relay located in the same under hood fuse /relay box . There also is a crank fuse 10amp in the under hood fuse box . Besides the fuse's and relay ,the ignition switch or the PNP - park neutral position switch could be bad . Testing the whole starter circuit should be done ! How to voltage drop test starter motor circuit
Is there spark coming from plugs . Electronic ignition? Check fuse box for blown fuses .
Pull a wire out from spark plug and place it near the plug. Start engine while someone else watches if there is spark going ( do not handle wire when doing this ) if new pump it has to be primed before use .
If it fails to turn over then check on battery condition and on battery connections (do full beam headlights stay consistently bright for ten minutes). If Ok then check on wiring to and from starter motor and on condition of starter motor brushes. If turning over can you hear the fuel pump running; whirring sound when key at position prior to 'start'. If no fuel pump check on fuse for pump relay, check on relay, check on voltage at pump. If pump supplied with voltage but not running give it knock to see if you can get some kind of response from it. If completely dead replace pump and filter assembly.
The fuel pump only runs for exactly 1 second when the key is turned to the run position, then the computer shuts it off unless the engine is being cranked over with the starter or it is running of course. If you wish to prime the system repeatedly turn the key to run and then off again until engine starts while holding the accelerator pedal to the floor to help purge air from the injectors.
Does it crank or not? If no crank then look at the starter or ignition switch. If crank but no start then look at the ignition system. Check for spark at the plugs and also check the fuel pressure. If there is spark try spraying a little starting fluid into the intake. See if it starts and stays running. If it stays running reply back and I will explain why.
Turn the key to the ON position without starting the car You should hear the fuel pump running for 5 seconds to prime the fuel up to the engine so it can start. If no sound is coming from the fuel tank area which can be heard with the drivers door opened in a quite area the oil sending unit on the engine needs to be looked at. If its bad the fuel pump will not prime. If the oil sending unit is good the fuel pump is at fault instead Oil pressure to your engine achieves to close the circuit to this switch which the computer senses. When the oil pressure is up to normal standards the PCM shuts that circuit off and turns on the fuel pump relay
check the solenoid on the starter it powers the ign for starting then switches to run when you let off key,either the solenoid is bad or a wire to the solenoid has come unhooked and sometime they have an in line fuse which can blow.