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Old 12-04-2003, 05:08 PM
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Erratic Running Engine

I am in hopes I am posting in the correct folder for this question. I will post it in the engine section also. My problem is that I have a 92 t-bird with a 5.0 in it, it runs great and revs fine but it stumbles and will not accelerate when under a load. i have changed the ignition module, tps, fuelpump, regulator, computer, plugs, wires, cap, and rotor. i will try the distributor next but what part of the electrical system cause the car not to run correctly under a load. thankyou for your help

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Old 12-04-2003, 05:26 PM
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could be your catalytic converter being plugged up....ive had the same thing before on my grand am, replaced the coils, new plugs, and tps too actually.
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Old 12-04-2003, 05:38 PM
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no cats under the car and complete new tuneup i checked the firing order and plenty of fuel pressure even when running erratic
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Old 12-15-2003, 10:50 AM
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Check for a cracked or loose vacuum hose. Another problem may be moisture inside the distributor. Inspect your plug wiring at night with the car running and no lights on in the room. Watch for blue lightning in the wires. If you have that, replace the wiring. If you have an electronic trans, the problem could be there. Run a diagnostic check if you have a computer system in the car. It may tell you something. Check your emissions equipment, although I think that would be low on my priority list of things to check. Good Luck!
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