Surgering idle and dies at stop sign
65

Asked by rockyGT Jun 29, 2011 at 07:11 AM about the 1985 Pontiac Fiero GT

Question type: Maintenance & Repair

My Fiero Gt with manual transmission, 110,000miles has a surgeing idle of a few hundred RPM, at stopping it often dies.....O2 sensor new, TPS sensor new, EGR tube new, cannot find no vacumn leaks...any help would be appreciated

4 Answers
35

Eddie answered 13 years ago

Mine did the same thing when the MAP sensor went bad.

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GuruL9M57 answered 5 years ago

I am having this issue currently. I did find out however that my catalytic converter was bad, and had it replaced, but I now have no power and the rpm's go from 1100 to 600 and it will stall. Have replace coil distributor, plugs and wires and the fuel pump relay. any thoughts or advice?

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GuruL9M57 answered 5 years ago

Check your Transmission lock out solenoid. This is what happened to mine and if you talk to a Tranny shop they will tell you the symptoms

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10

GuruK7GDN answered 5 years ago

Try running ethanol treatment in gas,I tried about everything , was about to get fuel injector .It said the new injector was good for ethanol so I got idea that it was gummed up . I have seen noticeable and almost instant improvement. Lucas ethanol treatment

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