Question about 2005 Pontiac Grand Prix Base
-To preface the issue; there was an existing issue with the exhaust, somewhere between the back seat and drivers seat. Yesterday, on my way home from the bank, my car seemed to "sputter" when I would press on the gas pedal. There was already a lack of power due to the exhaust leak, however this time seemed much more severe. As I approached the Highway entrance ramp, I released my foot from the gas pedal. When I pressed back down to accelerate, the engine rev'ed as if it was in neutral. Simultaneously, the heater blower was shutting off and turning back on. I pulled over and shut the car off. 30 seconds later it started right back up and went back in gear. There was still a tremendous lack of power, however I was able to make it home. Any idea what the issues are?
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Posted on Jan 02, 2017
The best solution is to do a complete tune up with new spark plugs, wires, fuel filter, air filter, pcv valve and oil change.. If this still happen I would get some fuel injector cleaner, or use marvel mystery oil in both your oil(crankcase) and gas tank. You can get mystery oil at walmart..its in a red bottle with black label.
Posted on Jan 18, 2009
2.8l were known for fuel injectors, vacuum leaks up by the throttle body, and there is also the idle speed control, but sounds like injectors or vacuum, double check your wires on the coils too
Posted on Jul 23, 2010
Is the Security light blinking when the car stalls? if yes, you need to repair or disable your Passlock-II security system. If you do not have a blinking security light then Your problem IS the fuel pump. Not throttle body, not wires, not plugs.....yes, you hear the pump but that means nothing. System too lean means you are not getting fuel. You've replaced the filter already. The fuel pressure regulator being bad would give you a system too rich code. Injectors wouldn't give you a lean code either. The only remaining solution is the fuel pump. AND, these cars are notorius for having the fule pump needing the be replaced more than once duing their lifetime. Do yourself a favor, buy the Carter brand fuel pump. The wiring on them is garunteed not to fail.
Posted on Mar 24, 2012
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