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  1. Hartwell

    obd1 code 22 Throttle Position Sensor

    closed loop rather Sent from my iPhone using Tapatalk
  2. Hartwell

    obd1 code 22 Throttle Position Sensor

    Haven’t been on the forum in a while as this semester has kept me busy, so I apologize if I’ve missed some responses on my other posts. Unfortunately with the new year a new code has come up on the burb. Code 22, throttle position sensor. I was previously dealing with a code 35 i believe the...
  3. Hartwell

    97 K3500 hydroboost question

    i believe this is the high pressure line Sent from my iPhone using Tapatalk
  4. Hartwell

    7.4L backfire under load

    Backfire into exhaust. Cut off the cat- didn’t change anything. Was thinking about pulling valves to look for carbon build up. No, the one wire connector is under the dash on the passenger side on my truck. Most likely going to take it to a shop first thing monday and have them run...
  5. Hartwell

    7.4L backfire under load

    Alright so here’s the deal. I’ve got a 94 k2500 burb with the 7.4 tbi. About a month and a half ago i started having misfiring issues. Did the distributor cap, rotor, wires, and plugs. Adjusted the timing as you should with a tbi (warming it up, unplugging the computer under the glove box...
  6. Hartwell

    7.4 tbi backfire under load

    Alright so here’s the deal. I’ve got a 94 k2500 burb with the 7.4 tbi. About a month and a half ago i started having misfiring issues. Did the distributor cap, rotor, wires, and plugs. Adjusted the timing as you should with a tbi (warming it up, unplugging the computer under the glove box...
  7. Hartwell

    What is this vacuum connection

    I suspect this connection (yellow) may be one of the causes to my misfire/timing problems on my 7.4 burb. I didn’t notice it because there was no hose or anything. my question is, is there supposed to be a hose there and if so where does it lead? If not, do i plug it? I ran some vapor through...
  8. Hartwell

    Strange power/throttle response :454 burb

    put in bwd injectors because the ones i ordered from summit kept getting back ordered and weren’t gonna get here in time for me to leave so i was forced to get bwd from advanced auto. Fuel pressure’s good- i’ve replaced the pump and filter already. Sent from my iPhone using Tapatalk
  9. Hartwell

    Strange power/throttle response :454 burb

    haven’t been able to put any miles on it with the new injectors because it would die as soon as i have it any throttle. I replaced the entire distributor then warmed her up to adjust the timing. when i was adjusting it to 0 degrees it idles real low then died. Tried to start it again and it...
  10. Hartwell

    Strange power/throttle response :454 burb

    got the new injectors in today- it’s still running rough if not more. When i tried to drive it it stalls out when given gas. I leave for college on saturday and this is killing me. Sent from my iPhone using Tapatalk
  11. Hartwell

    The forgotten gem

    did that equalizer and everything work? love to take em off your hands if they’re in good shape. Sent from my iPhone using Tapatalk
  12. Hartwell

    Strange power/throttle response :454 burb

    Yeah that’s what’ve i’ve heard, of course after the fact of installing the blue streaks. I’m probably going to install when the injectors come in and if that doesn’t do it then i’ll pull the distributor. Sent from my iPhone using Tapatalk
  13. Hartwell

    Strange power/throttle response :454 burb

    No check engine lights- just ordered new injectors from summit today. I’ll use the scanner to see if it’s throwing codes tho. Sent from my iPhone using Tapatalk
  14. Hartwell

    Strange power/throttle response :454 burb

    Did you use delco cap and rotor? I’ve been having similar issues and I suspect my injectors because I’ve already replaced cap, rotor, coil, wires, plugs with no resolve. However, I used Bluestreak all the way through minus wires and plugs. Sent from my iPhone using Tapatalk
  15. Hartwell

    7.4 tbi timing issue

    Would it be possible to just connect a timing light to the wire and just see if the light flashes? Because it only flashes when a spark goes down the wire, yes? thanks. Sent from my iPhone using Tapatalk
  16. Hartwell

    7.4 tbi timing issue

    Sounds like a good idea- about to head to the parts store to rent a fuel pressure gauge. Am I right in assuming there are no ports in the fuel system in these trucks and you just have to tap in where the filter is? Could the regulator also be the culprit? Sent from my iPhone using Tapatalk
  17. Hartwell

    7.4 tbi timing issue

    I’m also getting a ticking/clicking sound from my distributor cap. It’s not a constant click but almost rhythmic Sent from my iPhone using Tapatalk
  18. Hartwell

    7.4 tbi timing issue

    my ‘94 7.4L tbi burb has been running real rough lately. It misfires/shudders badly and won’t accelerate quick at all. So far I’ve replaced the plugs, wires, cap, rotor, pcv valve and fuel filter and it hasn’t solved anything. I checked the vacuum lines and they’re all good. When I went to...
  19. Hartwell

    96 Z71 305 with engine shudder at idle

    Did you ever solve this? Sent from my iPhone using Tapatalk
  20. Hartwell

    AC making noise near evaporator core

    Went ahead and found the link through another thread you had posted it to since I use an app for all my forums and it formats them differently than the actual websites do. Here it is for anyone following this thread with the same issue...
  21. Hartwell

    AC making noise near evaporator core

    that’s exactly what it is! About how long did it take to fix this and is it something you gotta fix immediately before it starts becoming a bigger problem? Sent from my iPhone using Tapatalk
  22. Hartwell

    AC making noise near evaporator core

    Do you know the title of the thread? Sent from my iPhone using Tapatalk
  23. Hartwell

    AC making noise near evaporator core

    I don’t know much on how the ac system works but i recently used my ac for the first time in a while because only my front ac works because i’ve yet to replace the rear expansion valve and now it makes a tapping noise under the dash where the evap core is every time i turn the car off or on...
  24. Hartwell

    Looking for Front end grill and bumper images

    I back dated my grille on my 94 because I prefer the 88-93 style just because it’s more squared off. Wasn’t too hard, just need a new bumper filler from the 88-93. Also- if anyone knows what the bumper/frame horn lookin things are actually called, i’d love to know because i want to get a new...
  25. Hartwell

    The Member Truck Thread

    I just realized i hadn’t posted pictures of my old truck and my new truck. The first truck had been passed down from me by my oldest sister when i was 16. My grandmother had bought it new in 1993. It was a 93 gmc sierra c1500 extended cab 305 5.0L v8. i wrecked it march 2018 and replaced it with...

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