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Car stumbles on acceleration while cold?? (Non-Thirdgen)

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Old 02-23-2002, 05:10 PM
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Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 4 Spd Auto
Car stumbles on acceleration while cold?? (Non-Thirdgen)

After my cars been running for a minute or two the idling rpm starts to drop as usual, but it continues to drop below 1000 and usually goes down to about 600 over the course of its warmup. Once the rpms start to drop like this, I have no power. Even if I rev up the engine before releasing the clutch its still gutless. While its doing this, if I bring the rpm up to around 3500, the engine gets a sudden burst of power and throws you back into the seat. However once the cars all warmed up, it idles around 1000 and has power right away. Any ideas what might cause such a problem???
Old 02-23-2002, 05:47 PM
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
I'd say pull all the spark plug wires and check their condition.
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