Question about Oldsmobile Custom Cruiser

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I have a 1991 Olds custom cruser that pingsthe motor ping

The motor pings hot and cold I cleaned EGR valve and checked the timing they are OK The motor is a 5 liter What about the controler for the EGR valve or knock senser .Could a bad catalitic converter cause this.

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  • Tyler Mar 26, 2012

    no its a loud knock/ gringing in the motor

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  • Master
  • 1,902 Answers

Either your valves are knocking. Your IAC (Idle Air Control valve), or your knock sensor. The only thing is that if your knock sensor is bad it would throw a code. Your caddy could be the problem but again it would throw a code

Posted on Apr 18, 2009

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Posted on Jan 02, 2017

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What to do about a pinging noise when you give it gas ?


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