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Old 08-26-2011, 10:32 PM   #1
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Default 97 bonneville wont start please help

this is my mothers car, she bought it knowing it had problems but it ran, but also stalled all the time at low speeds. ive changed the plugs, plug wires, icm, crankshaft sensor, now im trying to relpace the ecm but cant find it. her chiltons manual is incorrect even the replacement ecm'* dont look like what ive found under the dash. maybe im looking in the wrong place. car will start if i floor it and crank it, but misfires really bad???????
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Old 08-26-2011, 10:53 PM   #2
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Have you checked your fuel pressure?
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Old 08-26-2011, 11:09 PM   #3
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1997 3.8 non supercharged, dont have fuel presure tester but fuel does shoot out the fuel rail where you would test it when i crank it
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Old 08-26-2011, 11:10 PM   #4
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totally stock
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Old 08-26-2011, 11:43 PM   #5
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You hook to the shreader valve on the fuel rail. Then turn key to run but not start. Should have about 48psi. Then start engine, should be about 45 to 50 psi. Shut engine off, should hold pressure.
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Old 08-27-2011, 08:43 AM   #6
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pressure is critical you cant just assume anymore
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Old 08-27-2011, 01:04 PM   #7
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Thanks, i will check and let you know. thanks again
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