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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / November 200493 Mustang 5.0l won't start
My son has a 93 5 liter Mustang 5 speed. He had used it to go somewhere, tried to start it a few hours later and now.... nothing! The car will crank but not fire. He's changed the plugs (they needed it) and checked to see that he has spark. Now we're thinking maybe the problem is with fuel. Can't smell gas on the plugs so maybe something's wrong there. Where is the fuel filter? And the fuel pump? Should he hear the pump when listening at the gas cap? I told him to pull a fuel line and see if he's got pressure. Any other ideas? Car has ~80K miles and has been running fine til now. TIA Andy > My son has a 93 5 liter Mustang 5 speed. He had used it to go > somewhere, tried to start it a few hours later and now.... nothing! [quoted text clipped - 20 lines] > > Andy Have you checked: a) Fuel pump fuse b) Fuel pump relay  SignatureAnthony You can't 'idiot proof' anything....every time you try, they just make better idiots. Remove sp to reply via email > Have you checked: > a) Fuel pump fuse > b) Fuel pump relay Good ideas. Where are they located? He checked the fuses in the fuse block and they're all OK. Is the fuel pump fuse located somewhere else? Also, where's the relay? Thanks. Andy > My son has a 93 5 liter Mustang 5 speed. He had used it to go > somewhere, tried to start it a few hours later and now.... nothing! > Where is the fuel filter? Under the car, right side, in front of the rear wheel. Looks like a big tin can strapped to the frame rail. > And the fuel pump? Should he hear the pump when listening at the gas > cap? The pump should run for about a second when the key is turned to "on". You should be able to hear it buzz from inside the car. > I told him to pull a fuel line and see if he's got pressure. Or use the schraeder "test port" in the metal fuel rail on the engine. 40 psi, so watch your eyes. My guesses: Did he slam the trunk when he parked it? Any chance some other car thumped it from behind while parked? Check the "inertia switch" in the trunk. If tripped, the fuel pump won't run. Should be on the left hinge bracket (trunk models) or the rear panel by the lock (hatchbacks). Push in the button to reset it. > > My son has a 93 5 liter Mustang 5 speed. He had used it to go > > somewhere, tried to start it a few hours later and now.... nothing! [quoted text clipped - 23 lines] > Should be on the left hinge bracket (trunk models) or the rear panel by > the lock (hatchbacks). Push in the button to reset it. Good info, MB, I'll have him check all of that. Thanks. Andy Dont forget to check the ecu.... > > > My son has a 93 5 liter Mustang 5 speed. He had used it to go > > > somewhere, tried to start it a few hours later and now.... nothing! [quoted text clipped - 27 lines] > > Andy > Dont forget to check the ecu.... What's an "ecu"? Engine control unit? You mean the car's computer? And how would we check an "ecu"? TIA Andy > > Dont forget to check the ecu.... > What's an "ecu"? Engine control unit? You mean the car's computer? > And how would we check an "ecu"? > TIA Andy ECM/ECU. If you have spark or clicking injectors than half is working. If you hear two relay click from the fuel relay when the pump runs for about a second when the key is turned to "on" or the computer check engine light works then the ECU should be okay. Brother in laws van with a 5.0 just demonstrated same symptoms.It was the computer(ECU) Just another thing to think about...... > > "scott and barb" <crowley9@gate.net.> wrote in message > news:<WJ8pd.11179$pK6.2502@newsread2.news.atl.earthlink.net>... [quoted text clipped - 8 lines] > the computer check engine light works then the ECU should be > okay. |
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