Search results

  1. S

    Fuel pump

    Thanks. I was wondering how to check for voltage on ground side. As Shcurkey stated this. Verify voltage on the ground wire with the pump RUNNING, as close to the pump as practical. Less is better, anything over 1 volt is a problem.
  2. S

    Fuel pump

    So if I get under voltage will this cause motor to burn out? Also how do I check the ground for voltage? Positive voltmeter wire to pump ground and the ground the negative wire on voltmeter to frame?
  3. S

    Fuel pump

    When last pump replaced I changed fuel tank to a clean good used on from brothers truck and also new fuel filter with new sending unit and sock. So entire whole new pump assembly. Tbi was gone through recently with all new gaskets and seals. Never checked the return line for blockage. This last...
  4. S

    Fuel pump

    Ok it's been a while since I posted and I'm still dealing with the same issue as before bucking and bogging and narrowed it down to the fuel pump. Swapped tank with a known good one from brothers truck as the old one was contaminated. Anyway this is the 3rd fuel pump in the truck now. Delphi...
  5. S

    Surging and bucking when warmed up

    There is no mechanical noise at all while engine is running, The throttle body base idle screw is sealed and idle is stable while running.
  6. S

    Surging and bucking when warmed up

    Ok so I ran my truck on Tunerpro RT and at cold start it's showing it's in closed loop. It's also showing 4 knock counts, timing sweeping from 0-40 at idle, IAC position 66 at idle, O2 MV jumping around from 180 to 880, vacuum 20, MAP 28, TPS volt 0.68, AFR 7.3, BLM 134. Should the ECM be in...
  7. S

    Surging and bucking when warmed up

    Ok I downloaded Tunerpro RT. Not sure what I need to look for I have videos of everything from cold start to warmup. I noticed it was never in open loop always closed and the spark advance is jumping all the way and back down. I need to figure out how to download the video.
  8. S

    Surging and bucking when warmed up

    First picture is in park at idle and 4th is in gear
  9. S

    Surging and bucking when warmed up

    I will down load tomorrow and give it a try if I can figure out how to.
  10. S

    Surging and bucking when warmed up

    Ok so not sure what I need to be looking for because I'm not familiar at all with this stuff bet here are some pics and videos. It's doing some new stuff now. In gear the idle jumps way up. Won't let me upload video.Anyway any help is appreciated. I need to get this going.
  11. S

    Surging and bucking when warmed up

    Waiting on my red devil cable in the mail. Hope I can get this damn truck figured out.
  12. S

    Surging and bucking when warmed up

    Don't really have a computer to use so what do you think about the OTC 3211 or actron cp9690?
  13. S

    Surging and bucking when warmed up

    Ok so I did a fuel pressure test today and found a big issue. I found my new fuel filter was clogged with rust. Picture of pressure is before and after fuel filter. Also picture of filter and crap that came out of it. I changed the filter out and took it for a drive. It ran better and then bam...
  14. S

    Surging and bucking when warmed up

    Does not surge at idle. Only when you hit the gas in park or when driving after it warms up.
  15. S

    Surging and bucking when warmed up

    Working trying to get me a scanner. Weird that mine does it a soon as it hit operating temp every time.
  16. S

    GMT400 - Community Scan Tool

    Looking to get on this list. What's the list looking like?
  17. S

    Surging and bucking when warmed up

    I checked TPS with volt meter and found no inconsistences with voltage while checking. In the process of trying to get my hands on a scanner.
  18. S

    Surging and bucking when warmed up

    Have not checked fuel pressure yet. Pump assembly and filter are new. Will check pressure to verify its good.
  19. S

    Surging and bucking when warmed up

    All new spark plugs and haven't found a vacuum leak.
  20. S

    Surging and bucking when warmed up

    Installed new distributor and set timing. It didn't do squat.
  21. S

    Surging and bucking when warmed up

    I have not checked the base timing at all. I will be installing a new distributor today. What should timing be? Also I'll have to save up to buy the said obd scanner.
  22. S

    Surging and bucking when warmed up

    cap, rotor, plug wires, spark plugs, fuel filter, air filter, fuel pump, O2 sensor, knock sensor & plug, temp sensor are all new. Where do I get a real scan tool for the OBD1? How expensive are these?
  23. S

    Surging and bucking when warmed up

    Think I might have found my problem. Well at least a problem. Do you all think this is what's causing my issues? After overhaul of TBI and base gasket replacement truck would not start unless pedal was held. After getting it to stay running I took it for a drive and still did the same thing...
  24. S

    Surging and bucking when warmed up

    Can't seem to find the service manual on the site. I went ahead and replaced the knock sensor and plug. Also replaced the O2 sensor just in case. No change. I sprayed some brake parts cleaner around TBI and got a slight change in idle so I pulled the TBI and I'm going to replace the base gasket...
  25. S

    Surging and bucking when warmed up

    Ok so I tried a couple of different ways of unplugging the EGR. I pulled the line from the solenoid to EGR and tried it. No change. The I plugged the line off and no change. The unplugged the solenoid and no change. I just did the paper clip code reading and it popped up code 43. From my search...

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