I have a 1986 Vette, all of a sudden it revs very high and won't go down any. What can the problem be?

Asked by Nov 04, 2016 at 09:46 AM about the 1986 Chevrolet Corvette Coupe RWD

Question type: Maintenance & Repair

My 1986 Vette is having a problem all of a sudden when I start it it runs really.high, 2400 rpms. And it doesn't go down.  The only thing I have done is spray some WD40 on the accelerator cable.  

2 Answers

77,955

Sounds like either a vacuum leak or a bad IAC (Idle Air Control) valve. HTH. -Jim

19,445

Have the sensors checked. Something is out of whack and the computer is getting a wrong message. Look very closely and see if you can find any lose wires or hoses. Did you spray the WD-40 after it raced or before?

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