C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Electrical Problems? Cutting out at stoplights.

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Old Feb 15, 2008 | 09:14 AM
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murraydeluxxxe's Avatar
murraydeluxxxe
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Default Electrical Problems? Cutting out at stoplights.

I have an '88 with 16,000 miles on it, and recently (as in just this week) it's started doing this thing where if I am stopped at a light, it will just cut out. It starts right back up again.

Also, on occasion, the lights and the readout on the AC unit will flicker.

While driving the volts read 14.2/14.5, at a stoplight it reads 13.9.

Thanks.
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Old Feb 15, 2008 | 11:24 AM
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I don't think the flickering is a problem and your voltages sound right.First thing I would look at would be the IAC valve.Also you might want to try and increase the minimum idle with the screw in the throttle body.If it's not been messed with before you will have to pull out the blocking plate to get at the adjuster.When the car is warm set the idle to 600 and see if that cures the problem.
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Old Feb 15, 2008 | 02:15 PM
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Default stalling

sounds to me like the IAC is not working or is partially clogged up. Especially since nobody drives the thing. The flickering might be the impulse motor on the IAC trying to adjust the idle, and the motor is pushing against the crud on it's valve seat.
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Old Feb 15, 2008 | 03:17 PM
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Hey, thanks. What is the IAC valve? Thanks.
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Old Feb 22, 2008 | 08:40 PM
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murraydeluxxxe
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Turns out, it was a bad fuel pump. Anyway, I'm putting it up for sale. Turns out toddlers and Corvettes don't mix. Maybe I'll get another one when they go away to college.
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