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  1. Cold Engine Spark Knock On Acceleration 3800 Series 3

    DTC's, Problems & Troubleshooting
    I have a 2007 Grand Prix GT, and I have had issues with a rattling spark knock type sound when accelerating while the engine is cold for quite some time. When I purchased the car in 2015, it had a bad spark knock problem to the point I ran premium grade fuel. Not long after purchase, I replaced...
  2. Car dies upon acceleration

    Fuel System
    Have a 2000 GTP everytime I have to punch the gas the car dies. Had new fuel pump and filter put in last December. Put new fuel pressure regulator in last week still having same problem. Any suggestions are greatly appreciated.
  3. Injectors maxed?? Stock Pulley, New Fuel Pump and Filter

    Fuel System
    Hi i have a 2004 gtp compg and I just installed a new fuel pump and fuel filter because i saw it was going lean at high rpm. After I installed the pump and filter I did a log and saw that my injector duty cycle was over 100% near redline which seems strange to me since im still running the stock...
  4. Fuel injector problem

    Fuel System
    Hello, I have a fuel injector that is driving me crazy! It is making a high pitched whirling noise. I have replaced the injector and the O'rings. The noise stopped for about a day, then started making the noise again. If I spray starting fluid on the injector the noise will stop for a short...
  5. 2000 3800 II series

    Fuel System
    Grrrr... this car has made me generally frustrated. so i bought it from my in-laws with a bad MAF and a bad Crank P sensor...,. figured ok ive done a rear wheel drive engine pull and rebuild... well turns out the cps is a dick to replace. now that i have the car back together i am at a no-start...
  6. possible fuel pump or FPR problem

    Fuel System
    The problem started about 3 days ago, I was driving at about 35-40 and the engine dies. I pulled over and tried to start it again, it wouldn't start so i let it sit for 5-10 minutes. Went to go start it and i had to give it gas to help it start. It idled good but when I went to go pull back onto...
  7. WTB L32 Fuel Rail

    I am new here and looking for a L32 Fuel Rail. I figure someone here has upgraded and has one cheap. I would need them shipped to Bellbrook, OH 45305 unless you are within about an hour of me and then I would just pick it up. Thanks in advance, Brian
  8. Fuel Line Woes

    Naturally Aspirated
    I own a 97 GP with the n/a 3800 in it. I have tried six times to replace a section of fuel line damaged by a tree limb i hit on the highway. Not one retailer has been able to provide the correct part. The area of concern is from the fuel filter (somehow didn't snap that plastic connector) and...