Having problems with your 2005 Pontiac Grand Prix ?

Ildleing up and down and running high on the rpms

\015 I changed the mass air flow sensor already and it still is running bad\015 Posted / edited by AnonymousUser on : 26-02-2018

Answers :

I had a simular problem on my car, but it is'nt a Pontiac, it's an Mazda 323. I solved the problem to be that the Idle air control valve was dirty, and therefore sticking. This caused the engine to idle eratically and sometimes stall. Sometimes it would even stall whilst changing gear.
On most cars the idle air valve is located at the top of the engine, normally near the air filter. And to be honest is very easy to service. It's just a matter of disconnecting and cleaning it with carburetter cleaner.
You probably know this already lol, I'm not sure if you mean this when you say sensor. Hope this was of some help! :)
Repair Help & Product Troubleshooting for 2005 Pontiac Grand Prix

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