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  1. J

    Grinding noise. Goes away in 4wd.

    I have a terrible grinding noise going on in 2wd that completely goes away in 4wd. It sounds like something is trying to engage. '93 Chevy 4wd / 5 speed manual. I can't tell if the noise is from the xfer, driveline or front diffy. Is there some kind of typical problem of this nature? How can I...
  2. J

    Vacuum issues? Heater, A/C controls not working

    I think I'm missing something on the vacuum line routing. The nipple was broken off of the Charcoal Canister and the line was dangling over the side of the engine. Rather than trying to find a way to fix the canister, I just flinched while paying the $85 for a new one. I ran the line straight...
  3. J

    Fuel pump: diagnosis and change.

    1994 Chevy p/u, 350cid, TBI I never really got this truck running quite as well as I suspect it should. I've only had it for about 10 months now. Lately, I'm suspecting a fuel pump. I've already chased all of the normal stuff (plugs, wires, cap/rotor, timing, TPS, fuel filter, etc.). It...
  4. J

    Stock radio - shipping cost only

    I just successfully changed out the stereo in the 1993 K1500 (with a little help form the forum. Thanks, guys.) With the exception of the speakers, the old stuff worked well. It was AM/FM Cassette. If anyone needs any of the old parts, they're yours for shipping costs. If nobody wants this...
  5. J

    Idle Air Control test

    I followed the instructions for testing the IAC Valve. I found that the valve was open about 1/4 inch cold and seated hot. Does that sound about right?
  6. J

    Engine miss / rough running - Where to go next...

    1993 K1500, 5.7L, 5 sp manual, I've got a couple other threads going but the engine codes are cleared up. Apparently, 42 & 54 can both be caused by loose ground wires at the thermostat housing bolt. Thank you, Richard (someotherguy), for that. The codes are gone but the miss remains. The idle...
  7. J

    Speedometer under registers

    Tire size... checked that first thing. The tire size is exactly what's on the door tag. I'm getting a 25% correction factor. That is, Speedo reads 40, I'm going 50 according to the GPS. I haven't checked the odometer yet but I'm pretty sure that it's under-registering too. On my old '75...
  8. J

    Sudden engine revs

    1993 Chevrolet K1500 5-speed manual, 5.7L TBI Last night, I was just taking off from a light and the engine just started red-lining. I tapped the gas pedal thinking that it was just caught on a floor mat or something. The pedal felt normal. After 2 or 3 seconds, the engine went back to normal...
  9. J

    Upgrading to single din stereo...

    I bought the adapter that goes under the middle vents. It actually includes new vent holes. It looks like it will be a nice, clean looking install. I also got the plastic bin that can replace the stock radio. (If anyone wants the old stuff, they can have it for shipping costs.) Is there a good...
  10. J

    Codes 42 and 54

    I used the paperclip jumper to read codes. It was easier than I expected. I just got this truck. (1993 K1500, 5.7) It runs rough at high and low RPM. The first thing I did was replace the plugs, wires, cap and rotor. Not much improvement although the shape of the plugs indicated that it was...

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