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  1. gpracer1

    98 tahoe driving me crazy.

    9-10 volts is barely enough for the truck to run! You need to check the alt and battery or possibly ignition switch.
  2. gpracer1

    Engine setting for years, what's the best way to prepare for start up?

    I wouldn't do the seafoam until after you have started the engine and you verify that it is operating normally. This is because after you do the seafoam it will smoke and cough and run rough till it clears out, and it's better to know its running fine before you do it.
  3. gpracer1

    Question about fuel injector assembly and FPR

    It's a 96.....isn't it a vortec and not throttle body?
  4. gpracer1

    Bad torque converter?

    Time to google 4l60e and see if any of those gears are related as far as bad solenoid, or share a clutch pack. Could be the valve body or shift solenoid, but doubtful that the converter itself will have an affect unless it is coming apart and producing metal shavings. Looks as though people...
  5. gpracer1

    '99 Yukon engine shaking & losing power

    Maybe time to start with a compression test to see if mechanical parts are ok. Injectors are of the stupid @&$#ing design that is inside the intake manifold and can't be accessed withouth removing the upper intake.:Pshyco:
  6. gpracer1

    98 tahoe irregular idle

    The MAF is between the air filter box and the throttle body. The AIC is on the throttle body.
  7. gpracer1

    '99 Yukon engine shaking & losing power

    I would change it, only like $9 When it's out, tap the in side on the ground on a paper towel and you will see the crap that was in it.
  8. gpracer1

    AC Compressor Not Pulling Freon

    Yup, that would suck. Also check the front of the compressor by the clutch.
  9. gpracer1

    AC Compressor Not Pulling Freon

    Just so you know, the static pressure of freon ( when the compressor is off) is equal to the temp of said freon. It does not matter if you have 2 cans in the system or 13 cans, it is the same. Therefore you can't gauge how much is in it unless the ac is running. Even then the low and high...
  10. gpracer1

    '99 Yukon engine shaking & losing power

    Start with the easiest cheapest most relevant stuff first. When was your fuel filter changed last?
  11. gpracer1

    What did you do to your OBS GMT400 Tahoe/Yukon Today?

    Working out of town again and decided to rent a 2012 Yukon 4x4 just to check it out......ma hoe will be jealous.
  12. gpracer1

    Seafoam??

    Just goes to show how much you know!:Boo:
  13. gpracer1

    AC Compressor Not Pulling Freon

    The ac low pressure switch controls how cold the evaporator can get. It usually shuts off at 25-28 psi to protect the evap from freezing up in humid environments. For this reason your ac will never blow under about 34 degrees. I installed an adjustable one in mine since I live in a dry area...
  14. gpracer1

    AC Compressor Not Pulling Freon

    Yes the switch has a valve behind it. Try turning the can upside down on the first one or two. That should help it cycle less.
  15. gpracer1

    AC Compressor Not Pulling Freon

    Did it have freon in it originally? Did it just stop blowing cold suddenly? With the gauges on, at what psi does the compressor kick off, and back on. Sounds like possible ac cycle switch.
  16. gpracer1

    Vacuum line help

    Goes to a vac solenoid between the engine and receiver dryer, mounted to the firewall.
  17. gpracer1

    Small Crack under the upper hose of Radiator (plastic section)... JB Weld???

    I had the same thing....but I bought a new one figuring it would just be a matter of time before it left me stranded in the desert in 115 degrees.
  18. gpracer1

    97 Tahoe Hesitates

    And I mean the one that is in the thermostat housing that feeds the PCM ......not the one on the head that feed the gauge.
  19. gpracer1

    Thermostat

    With a mostly stock motor and PCM I would stick with the oem 195, especially in colder climates. I have some mods and a tune, plus I live in a hot climate. I also tow a ~6000 lb boat and I went with a 180 so there would be less pining under heavy load and high ambient heat. Plus it helps keep...
  20. gpracer1

    1997 Tahoe No Start P1351

    I would check fuel pressure since that is easy. Possible fuel pump failure.
  21. gpracer1

    A/C works in back but not front?

    The one by the gas pedal should be the fresh air/recirc air door. I had to fix the broken gear on that one.
  22. gpracer1

    Hitch Question for Hauling

    Damn, that was 10 years ago already!
  23. gpracer1

    Hitch Question for Hauling

    You mean like the one I built to haul my old race bike? I designed it so you could ride it right up, all self contained. [/IMG] [/IMG] [/IMG]
  24. gpracer1

    So I sold my Z06 and....

    Damn, I'm not selling my 01 coupe.....you are nuts!
  25. gpracer1

    97 Tahoe Hesitates

    Possible coolant temp sensor.

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