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Old 05-14-2011, 03:17 AM   #1
Spartacus
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Join Date: Apr 2011
Location: Washington D.C.
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Unhappy Engine Stumbles when accelerating

1986 Automatic

I'm trying to figure out what is causing my engine to stumble.

I have already replaced spark plugs, rotor, distributor cap, wires.

No codes are coming up, TPS, coil are both good. Cleaned throttle body.

I'll just describe how I have been able to recreate the problem:

I'll start the engine (hot or cold), then floor it until I get to about 30 mph (engine runs fine during this part) and then I let off accelerator. Anytime I try to accelerate after that, the engine stumbles and the idle speed is erratic, even stalls sometimes if stopped at a light.

Any help is greatly appreciated! Thank you!
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engine, hesitation, idle, stall, stumble

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