Question about Pontiac Grand Prix
If your Pontiac has some years/miles on it and has the original starter, it may be shorting and causing the heavy drain on the battery
Posted on Oct 14, 2013
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Posted on Jan 02, 2017
Is it the Quad Four 4 cylinder? Pull the spark plugs and try to turn it over to confirm you do not have hydrostatic lock from a blown headgasket Quad Fours are known for that if thats no help please contact me So I can give you more information but tell me which engine you have Please
Posted on Aug 17, 2008
Couple of things to check, first this may be nothing more than a belt that has loosened or stretched after the install.There should only be about a quarter of an inch stretch in the belt between pulleys. Caution - only check with engine stopped!!! The alternator causes a strong resistance when it is producing electric power, so slippage is to be checked first. Second, if the battery light comes on and off; it maybe acting in error. Get a multi-meter and check the battery voltage with car and ignition shut off. With the meter set on 12volt bat, place the black probe on the negative side of battery or ground and the red probe on the positive side of battery. If you get a reading of 12.66 v the battery is being charged and is full. If you get 12.45 you have a 50% charged battery. If less the alternator wiring needs further checking into as there maybe issues with wiring or the alternator itself. Hope this helps.
Posted on May 27, 2009
Possibly a weak fuel pump, idle air control valve, vacuum leaks, or loose or damaged wiring in the ignition system. Check for vacuum leaks first. That's the only one that won't cost anything. Make sure all intake bolts are tight, and all hoses are connected properly and in good condition.
Posted on Jul 20, 2009
I assume you have replaced the battery? If not have it tested.
Check to see if a glove box light, trunk light or under hood light is staying on. Also you can remove the negative battery cable and then reinstall it. When reinstalling it, if you see a spark (other than just a very small one) there is a current draw on the battery. This current draw can be isolated by pulling one fuse at a time to see when the battery stops sparking on reconnect. It is possible you could have a shorted voltage regulator causing the current draw also. Many things can cause this problem.
Posted on Sep 24, 2009
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