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"HANK" > wrote in message
roups.com...
> my c4 vette idles fine when started cold . as it gets warmer it becomes
> hard
> to keep it
> running , until it just stalls . it has all the symptoms of a faulty iac
> valve. i
> must continue
> to apply more and more throttle to prevent stalling. also there is
> backfire
> when i
> back off throttle . no code is set . any opinion will be appreciated . i
> have replaced tps, oxygen senser, map
> senser, checked
> for vacumn leaks-non found. egr working properly.
> what is it ???
> please anyone , help ...
> thanks
>
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