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Missing at light throttle?

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Old 04-20-2010, 08:55 AM
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Car: '89 5spd GTA
Engine: 305(LB9) TPI
Transmission: T-5
Axle/Gears: Borg-Warner 3.42
Missing at light throttle?

Car was showing a CTS (Code 14), replaced CTS and no codes, but car is still fluctuating about 50-100 rpms at idle and has a noticeable miss when you lightly press the throttle under acceleration. Goes away with more throttle and runs fine at WOT. Fuel pressure is good at the rail, but still has stock 21yo injectors. Would a bad injector cause this? Will OHM out today. What about the condenser coil? This gradually seems to be getting worse over time.

Any help is appreciated....
Old 12-02-2010, 04:09 PM
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Car: 92 convertible camaro RS
Engine: 355
Transmission: 700R4
Axle/Gears: 3.73
Re: Missing at light throttle?

Originally Posted by Unholy 89
Car was showing a CTS (Code 14), replaced CTS and no codes, but car is still fluctuating about 50-100 rpms at idle and has a noticeable miss when you lightly press the throttle under acceleration. Goes away with more throttle and runs fine at WOT. Fuel pressure is good at the rail, but still has stock 21yo injectors. Would a bad injector cause this? Will OHM out today. What about the condenser coil? This gradually seems to be getting worse over time.

Any help is appreciated....


I am having the same exact problem as you do above. I was wondering if by chance you have found the problem and what it is. any help would be greatly appreciated
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