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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