Question about 2001 Pontiac Bonneville
Changed plugs, wires coil paks,fuel pressure at 50 lbs maybe EGR valve? this is a ssei 3800 with 92000 miles
If your egr valve is sticking it will make it act like you discribed. or a vacume leak.
Posted on Feb 02, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
1.Fuel injectors, related wiring, sensors, computer issues
2. Running out of gas, or poor fuel quality
3. Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
4. Incorrect Fuel Pressure
5. EGR system concerns: leaking EGR valve or restricted ports
6.Base engine concerns: low compression, valve train problems and timing issues
7. Ignition system concerns including, but not limited to:
Faulty spark plugs
Faulty coil or related wiring
Ignition module or related wiring issues
Ignition related sensor faults or wiring issues
You will have diagnose each element until you find root cause.
And it could be more than one element faulting out.
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