Recent content by Jehu

  1. J

    The Stupid Engine Questions Thread

    Thanks for the suggestions. I'll start with plugs and air filter.
  2. J

    The Stupid Engine Questions Thread

    CC? What's that?
  3. J

    The Stupid Engine Questions Thread

    They didn't elaborate beyond what was in my original post. That is 331 PPM of Hydrocarbons. The maximum allowed is 220 parts.
  4. J

    The Stupid Engine Questions Thread

    I just failed smog for the first time I can remember. 1994 K1500 / V8 331 PPM HC (220 allowed) This truck sits unused most of the time. I think it went about 5 or 6 weeks without being started just before needing to get the smog. Plugs/wires? Clean injectors? fuel additive? Ideas?
  5. 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...
  6. J

    Vacuum issues? Heater, A/C controls not working

    I solved the mode actuator issue. It turns out that the linkage is missing a screw. I slid it back into place (still no screw) and worked the controls. The mode selection works great. Now if I can just figure a way to put some 12A refrigerant in the system, I'll enjoy the summer a little more. I...
  7. J

    Vacuum issues? Heater, A/C controls not working

    I am now convinced that I need to get into the duct flaps. What's the best way into them? Glovebox? underneath? edit>> I do get the typical thump, thump sound after making changes in controls or shutting the engine down.
  8. J

    Vacuum issues? Heater, A/C controls not working

    Since reading Ken's post, I've been looking for diagrams, etc. I found a few discussions about how the GMT400 went back and forth between vacuum and electric on the controls a few times during the '90's. It sounds like I have the typical warped duct flaps and faulty solenoid controllers. I...
  9. J

    Vacuum issues? Heater, A/C controls not working

    Thanks, Ken. I'll look for something that resembles a vacuum reservoir on the passenger side. Hopefully, I can figure out where the vacuum line goes through the firewall and find a place to check it. Jon
  10. 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...
  11. 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...
  12. J

    Stock radio - shipping cost only

    I found someone local who wants this stuff but can't figure out how to delete this thread. Can a mod help me out with that?
  13. 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...
  14. J

    Need tbi heads

    I've used these guys 3 times with success: http://www.cylinder-heads.com/
  15. 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?
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