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  1. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I did buy some 1/4" x 3/8" clear tubing at Oreilleys. Everyone says diesel will eat thru it or blow the hose though. It's part number 7-081522. Got the part # from this thread...
  2. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I dont have the clear return line. I bled the fuel, replaced two of the battery terminal screws, replaced the baro sensor, cleaned the MAP/Boost sensor, and noticed one of my glowplug wires wasnt fully on my glowplug so I put it on all the way and then hooked the batteries back up and no more...
  3. I

    94 Chevy K2500 6.5 Multiple Codes Present

    Also when replacing the fuel filter, I noticed there was no fuel strainer inside the fuel filter manager. I figured that was probably an issue. Looked inside the filter too and didnt see one. Could that be causing the codes or the white smoke?
  4. I

    94 Chevy K2500 6.5 Multiple Codes Present

    Yes planning on doing that tomorrow.
  5. I

    94 Chevy K2500 6.5 Multiple Codes Present

    Replaced the fuel filter. Old one was literally black. Probably stock honestly, would not be at all surprised. Ran and drove great for about 30 minutes then it went back to its usual bs of the SES light coming on and going off intermittently. I'm getting alot more white smoke at startup too...
  6. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I didnt clear the codes they just went away I guess. I wiggled the connector on the MAP sensor and I think it helped. I will check the baro sensor as well. No mouse nibbles as far as I am aware of. I am going to replace the pigtail for the MAP sensor. This truck doesnt have an EGR but my 95...
  7. I

    94 Chevy K2500 6.5 Multiple Codes Present

    Ok. I am now getting codes 31, 36, and 62. All the others are gone. The code 29 for GP relay is gone too and that was there before I bought the truck.
  8. I

    94 Chevy K2500 6.5 Multiple Codes Present

    So the check engine light still comes on but only intermittently and only in the morning when it's cold outside or the truck hasn't been driven for several hours. When the truck is up to operating temp it's perfectly fine and I get no check engine light at all. I drove it all over this weekend...
  9. I

    94 Chevy K2500 6.5 Multiple Codes Present

    Well I think I figured out part of or most of the issue. The plastic connector part around one of the prongs on the pigtail for the boost sensor is broken. Fixed it and pushed it back up and now it's fine no check engine light...for now. Still burning metal smell though after shutting the...
  10. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I've inspected everything and havent noticed anything on the manifold or crossover. My only other guess would be clutch or flywheel. It sometimes grinds in 1st and second gear with my foot off the throttle and just barely going. Other than that its fine. Pretty sure my U joints are bad...
  11. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I'm also getting a burning metal smell from the front of the truck after driving it. Cant tell exactly where it's coming from but it's only been doing it the past few weeks. Thought maybe it was the front brakes but I just changed those last weekend and I'm still getting the smell.
  12. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I did do the lift pump test and it is fine. STS lamp does work and is not burnt out. I checked that. PMD extension cable is USA made. I'll try what you said. Wish there was an easier way to do this stuff. Mice had chewed thru the wires to the wastegate solenoid so I fixed the wires. It...
  13. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I know I unplugged the one in the crossover. The other is for the gauge. Had the same issue recently on my gasser. I'll definitely clean up the grounds and report back to yall. Thanks for the info! And Will, how much do those battery cables run? Are they side or top post?
  14. I

    94 Chevy K2500 6.5 Multiple Codes Present

    The engine does blow a good amount of black smoke when I really get on it though. Pretty thick. Have the #7 resistor in the PMD. Not sure if that's part of it or some of the codes maybe? It blew a ton of black smoke before I fixed the wastegate solenoid and straight piped it but it still...
  15. I

    94 Chevy K2500 6.5 Multiple Codes Present

    Oh okay good to know on the battery and fuse thing. In the second to last pic, the wire to the ground is showing towards the metal thing that goes around the bolt. That might be an issue. Noticed it the other day. As far as the ECT goes, there was no change in anything when I unplugged it...
  16. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I started up the truck and unplugged the baro sensor, map sensor, and ect sensor. Made no difference at all in the way the engine ran. I unplugged them each individually one at a time. Could this be a ground issue still or possibly a short skmewhere? Checked all my fuses and they look good...
  17. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I've attached pics of the ground thing I was talking about as well as what i think is the aftermarket oil sending unit relay.
  18. I

    94 Chevy K2500 6.5 Multiple Codes Present

    Do you think it's possible that mine is cracked then? I've gone a week or two without driving it once or twice and it's been fine. Hasn't hydrolocked as of yet. No telling how long it's been like that either. The previous owner resealed it from what it looks like as well as studded the...
  19. I

    94 Chevy K2500 6.5 Multiple Codes Present

    Okay. Where is the crank sensor located? I've tried to look for it before but havent seen it. Yeah I completely ditched the OS filter harness. Will be taking it off of my 95 and ditching that as well. It bucked for the first time ever last night. Only 3 times then it was fine. Truck runs...
  20. I

    94 Chevy K2500 6.5 Multiple Codes Present

    I did also remove the Optical sensor filter harness and plug the other end directly into the optical sensor. I think I read somewhere on here that doing so could solve some of the bucking issues. I had had a few small misses before i did that which is what lead me to do so as well as the guy...
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