Search results

  1. G

    late GMT400 interior lights wont shut off like a door is open.

    see if any other odd things happen to be in the circuit. Just had an issue on my 90 burb where the gauges all went dead and turning on the head lights the buzzer buzzed bc it thought the key was off even while running. truck would run and drive ok. but the gage/idle fuse would blow as soon as...
  2. G

    Help finding a short, Who's good at ELECTRICAL???

    .
  3. G

    Vintage Air Gen V (5) or replace existing compressor, etc., for 1987 R20 Suburban?

    make sure air blows through it before you install it. reason I stress that is I didn't do that one time and then had to tear it down and replace it again.....new parts sometimes are also bad.
  4. G

    Vintage Air Gen V (5) or replace existing compressor, etc., for 1987 R20 Suburban?

    make sure the rear expansion valve isn't clogged up before you reassemble the rear system. it should be open at room temp and totally closed at freezing temps.
  5. G

    Repeated stalling

    The biggest difference between open and closed loop is feedback from the O2 sensor. You could unplug it and start and see if it stalls out. Unplugging it will likely make the SES light come on, but shouldn't prevent it from starting/running. But agree with above, that disconnecting the EST...
  6. G

    Stuck E brake on 87 Scottsdale

    I set my e brake every time I park, just like the owners manual says! Mostly to make sure that it will work when I need it.
  7. G

    Gas Gauge issue

    pretty sure the shop that replaced my Burb's fuel pump a few years ago bent the float arm to show less gas than actual to "help me" by making sure i dont burn up a fuel pump. after the replacdment, the gauge stopped going about 1/4 past full like they usually do and was showing about 3/4 empty...
  8. G

    What locker shall I go for?

    doesn't giving it some brake at the same time as the gas help it catch?
  9. G

    Vince's TBI woes, progressive revelations, and tbi mods.

    Definitely something heat related, it seems. ICM is an easy swap to check. if the ICM doesnt fix it, you might scan from a cold start and see if the issue just happens to coincide with going into closed loop just to be sure it isnt something sensor related? could be multiple issues...
  10. G

    What have you done to your square lately??

    Windows are on a circuit breaker, not a fuse. so if it struggles and gets hung up, eventually the heat may trip the circuit breaker. it cools off and works again after a little bit. circuit breaker keeps it from burning things up if somebody just holds down the switch after the window is up or...
  11. G

    k5 rear window

    Guessing when the gate was overloaded, something got pushed down and is making contact with the bottom of the windows assembly. Or you might try taking the screws out of the tailgate panel and seeing if they are too long?
  12. G

    Spark plug gap closed fresh rebuild

    I'm not an engine builder, but I am not sure how the timing being off will smash a plug like that.
  13. G

    Where is this interior leak coming from?

    The cowl drains get clogged eventually and water stacks up and comes in the kick panel area. Under the truck behind the front fenders is where they drain. You may have to remove a plastic trim piece and pull some foam out of the way. I've had to clean, flush, clean, flush, etc until I got all...
  14. G

    Spark plug gap closed fresh rebuild

    I thought 350TBI (at least my 1990 burb) is CR43TS at 0.035 gap?
  15. G

    TBI timing help…

    I still can't tell how the timing is being set. if you pulled the distributor, put the engine at TDC, then you need to stab the distributor with the rotor pointing as close to cylinder 1 as possible. then start it and let it warm up. then unplug the EST bypass and put the timing light on wire...
  16. G

    TBI timing help…

    1. The ICM was probably what was bad, not the entire distributor 2. It isn't clear how you set the timing after you dropped the new distributor in. Timing should be set with a timing light on the #1 wire on a warm engine (if possible) with engine running and EST bypass unplugged.
  17. G

    Windshield Wiper Intermittent Function

    that sounds like could be the switch or maybe the park switch in the motor is going bad or maybe a short to ground in the wiring....
  18. G

    Windshield Wiper Intermittent Function

    the module is available here - https://www.workhorseparts.com/15598496-Module-Asm-Wiper-Switch-Pulse-Control. I've also had the intermittent wipers behave badly because of internal wiper motor issues.
  19. G

    Windshield Wiper Intermittent Function

    .
  20. G

    Vintage Air Gen V (5) or replace existing compressor, etc., for 1987 R20 Suburban?

    The front system does seem to be boosted when the rear is on in mine also, and I usually at least use the rear fan on LOW when the front is on even if nobody is sitting in the back. There isn't a lot of ductwork in the back. It is just the blower fan and an air deflector. If your deflector is...
  21. G

    Vintage Air Gen V (5) or replace existing compressor, etc., for 1987 R20 Suburban?

    I followed this post - https://www.gmsquarebody.com/threads/r4-to-sanden-whith-stock-ac-lines-for-serpantine.22437/ it was suburban specific. I also added a small pusher fan that helps a little, but the stock clutch fan really moves a lot of air on its own. the rear fan probably has had the...
  22. G

    1987 R10 shutoff while driving

    I'd say the ICM in the distributor is a highly likely suspect. If you don't want to do further diagnostic to be sure, this is one time getting out the single shot parts cannon isn't a terrible idea. Plus, if it doesn't resolve the issue, keeping a spare ICM in the glovebox is advisable because...
  23. G

    Vintage Air Gen V (5) or replace existing compressor, etc., for 1987 R20 Suburban?

    Search the forums., there is a thread on this forum that I followed when I upgraded to a sanden with my 1990 burb. Let me know if you can't find it. It has part numbers for a compressor with the stock hoses, new serpentine belt, etc.
  24. G

    1990 suburban Gage/idle fuse circuit shorted

    update - that fuse sends power to the TCC brake switch also. the purple wire from the brake switch that runs down to the TCC solenoid at the transmission was worn threw at a bracket holding the loom right by the connector. I moved it off the bracket and it didn't blow the fuse when i turned the...
  25. G

    1990 suburban Gage/idle fuse circuit shorted

    driving today and all of a sudden had no gauges. ECM was still reporting all the right data - coolant, vss, volts (although volts were lower than normal), etc. also noticed that when I turn the lights on, the buzzer buzzes....bc it thinks the ignition is not on. found the gage/idle fuse blown...

Latest posts

Forum statistics

Threads
45,570
Posts
986,559
Members
38,662
Latest member
imyourhuckberry
Top