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Recent content by Garandpa

  1. Garandpa

    Odd intermittant electrical problems

    2002 GTP has started having strange electrical issues. Sometimes the windshield wipers work, sometimes they don't. Just lately my brake lights only work if the left turn indicator is on. No idea where to begin on that one!
  2. Garandpa

    Overheat issue

    On the way home from church yesterday the A/C was struggling to keep up and we overheated. This is in Florida, and it was warm yesterday, around 85 degrees. The fans seem to be running as advertised, and there is coolant in the overflow bottle. What else should I check?
  3. Garandpa

    6* of KR @ 5500 rpm

    '02 GTP Mods are: Canned tune, Headers, Colder plugs, 3.4 Supercharger pulley, 180* thermostat, Stock airbox with K&N filter. I run 93 octane exclusively. I see a degree or so of KR at 3500 rpm, but as I get closer to redline it goes up considerably. At 5500 rpm I get 6* or slightly more. I...
  4. Garandpa

    CV boot separation during LCA change

    While changing the lower control arm on the passenger side, I managed to pull the axle out from the trans, separating the boot. Was able to stuff it back in and re-seat the boot, but could not manage to get the boot clamp re-installed. I need to take it to my mechanic for the alignment and have...
  5. Garandpa

    Best bang for buck for replacement struts on 2002 GTP?

    I need struts on my 2002 GTP with 137k miles because the right one is hopping when I hit anything rough. Not sure what else is wrong with it, but the boot has separated from the shock. I've found a number of replacement parts, but don't want to change my ride height or spring rate (nor break the...
  6. Garandpa

    Good tuners in Southeast Michigan?

    I've got a canned tune that I'm liking so far, but I can't help wondering if there are any good tuners around the Detroit area. How say you fellow Grand Prixers?
  7. Garandpa

    Short stack intercooler

    Thinking about next year's upgrade and looking at a ZZP short stack intercooler. The price seems decent and it seems like a logical step for my 2002 GTP. It has SD headers, ZZP canned tune, 3.5" pulley, and K&N filter in standard airbox (for now).
  8. Garandpa

    Acceleration stutter at WOT

    Hard to describe, but when I stomp on the accelerator the car will boost fine up to about 40mph and then it feels like it's cutting out momentarily. If I give it gas in a more controlled manner it accelerates fine with no hick-ups. I'm hoping an upcoming canned tune solves the issue, but is this...
  9. Garandpa

    1st time tuning/upgrading advice

    I'm making some mods to my 2002 GTP, which is otherwise stock other than MSD Blaster coils (which I have since learned have a so-so reputation). I have a ZZP cat-back exhaust and downpipe inbound, along with the ZZP PCM tune and a 3.5" pulley (per their recommendation), NGK TR6 plugs, wires from...
  10. Garandpa

    Newb from Michigan

    New to the forum, but not new to Grand Prix. Currently own a 2002 GTP that was an Arizona car, and hence no rust. I do not drive it in the winter so it should stay pretty nice. I've been trying to do an upgrade every year, and this year I'm doing a tune (with a ZZP PCM) and Cat-back exhaust. I...
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