Search results

  1. G

    Water on drivers floor

    Clean the cowl drains out behind the front fenders. Run some water and see where it comes out. You may have to remove a small plastic panel and move some foam out of the way. But clean, flush, clean, flush until you don't have any more debris coming out.
  2. G

    Suburban rear defroster ground

    from the service manual
  3. G

    would a TPS cause the throttle to stick on 1987 7.4 tbi only when trying to depress the accelerator. when the engine is off the accelerator moves free

    yeah, if the TPS is sending off-idle voltage when you are actually idling, it messes with the computer and causes idle issues, either rough or high bc the IAC will be either too open or opening and closing if the voltage is jumping around.
  4. G

    would a TPS cause the throttle to stick on 1987 7.4 tbi only when trying to depress the accelerator. when the engine is off the accelerator moves free

    yeah, likely not the sensor if the actual throttle is sticking open. if the voltage is sticking or being weird, that could be the sensor
  5. G

    Timing light recommendations

    I just have a basic bosch one with no dial. works fine for setting base timing. checking for spark, etc. i think I got it online at O'Reilly 4 or 5 years ago for $50. if you want to check total timing and things like that, you'd want one with a dial.
  6. G

    Cab harness questions/issues

    I'd be comparing some wiring diagrams. seems to me the odds of things lining up in the right spot from a glass fuse panel to a blade fuse panel are probably low. you can probably make it work, but will take some rebuilding of the harness connectors.
  7. G

    I finally realized why I like working on my '81 C10 so much

    good to know!
  8. G

    I finally realized why I like working on my '81 C10 so much

    Agreed. I run 17in and they are fine. Although mine is a 90 with intermittent wipers. I didn't jump all the way to 18in just to keep the over stress on the linkage and motor down a little bit from going bigger than OEM size. Sort of a compromise on improving the view during rain and the extra...
  9. G

    91 burb runs terrible in reverse

    Do the volts drop in reverse, like the reverse lights or something has a wiring issue? Otherwise I think you will be trying to track down a wiring issue like you suggested. An OBD1 Bluetooth reader and ALDLDroid will let you watch all the sensors and computer stuff to help diagnose....
  10. G

    Help me decide, paint the camper shell light blue or dark blue

    I'd maybe just leave it black, actually...
  11. G

    Vehicle shutoff while driving

    does it ever blow a fuse, like one of the ECM fuses? I'd also check the harness along the firewall for an orange wire that has rubbed through on a bracket. it is the 440 circuit and gives constant power to the ECM and the fuel pump (ECMB fuse). it can rub through in various places - MAP and...
  12. G

    Wiper Control Module

    been a while since I've replaced a module, but I also thought you can plug the harness in and bypass the module....
  13. G

    EGR Valve Question

    here was the post from my lesson learned on the EGR. it has the Delco part number. https://www.gmsquarebody.com/threads/egr-replacement-make-sure-you-get-a-delco.34389/
  14. G

    EGR Valve Question

    you don't need an EGR spacer that I am aware of. but there are different EGR valves that work on positive or negative pressure. it is critical that you get the correct application for your year/engine and I would get an AC Delco one to make sure it is correct.
  15. G

    Code thrown but not for my year/MAP issue

    this ought to help
  16. G

    700R4 wont shift into 3rd

    I'd try adjusting the TV cable 1 more time. or at least manipulating the throttle at the carb instead of using the gas pedal to set the tension. I believe the manual calls for it to be adjusted at the carb/throttle body and not by the gas pedal. and check the fluid again. if all that checks...
  17. G

    Evaporative emissions equipment

    make sure the lines are hooked up correctly at the cannister and throttle body. gas cap is supposed to have a check valve in it to relieve pressure or vacuum. so it could be a bad cap.
  18. G

    Washer Wiper Motor Clocking

    plug in the harness. turn the wipers on and then off and let it park. then install the motor.
  19. G

    Pulling all the smog stuff

    i think TBI only sets a check engine code if the O2 is open (no sensor) or if it goes extremely lean or extremely rich, I believe. but I think the moral of the story is that it is probably best to keep running it as GM intended.
  20. G

    Pulling all the smog stuff

    an 87 TBI will have a downstream O2 sensor.
  21. G

    Replacing headlights

    this should help
  22. G

    1990 suburban Factory roof rack location

    my 1990 burb has the woodgrain sticker. I just assumed it was factory?
  23. G

    Sea Foam

    I've been trying to clean the carbon out of my 350 TBI engine, because i think it is the cause of a random miss at idle and occassional missing under light load. I've been doing a pretty steady diet of Redline SI-1 in a maintenance dose for the last few months and used AC Delco top end engine...
  24. G

    Windshield Wiper Pulse Issue

    yep. parking has nothing to do with the pulse module. the park switch is in the motor. time for a motor replacement. several, including me have had good luck with WAI brand.
  25. G

    Tbi parts

    aw, hell. I'll take it for $40 just to put it on my shelf as a spare:)

Latest posts

Forum statistics

Threads
45,951
Posts
996,764
Members
39,150
Latest member
80sman
Top