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  1. J

    1996 4L80E P0713 Transmission fluid temp sensor problems

    I will look into getting a gauge. I did want to install a trans temp gauge. I did isntall a Rostra harness that has a fluid temp sensor on the harness I will have to look into to this update. As far as I know this has not been performed. Thanks for the info on that. I do eventually want to...
  2. J

    1996 4L80E P0713 Transmission fluid temp sensor problems

    This has been going on for a while. But my engine was starting to go, so I replaced the engine and now trying to fix this problem. When I replaced the engine, I had the blackbear tune done. The fluid in the bottom of the pan was a little brown. I am not sure of the trans temp. I don't believe I...
  3. J

    1996 4L80E P0713 Transmission fluid temp sensor problems

    I have a 1996 Chevy K3500 with the 5.7L and 4L80E I have a P0713 Code. Last weekend I dropped the pan and installed a new internal wiring harness and TFT sensor. I put it all back together and that did not solve my problem. The transmission does not shift at the correct times, but when I clear...
  4. J

    P0300 and P0302 With new long block 1996 K3500 5.7l

    This was a brand new long block I installed and just started for the first few times. First few starts and idle did not pop up these codes or show any misfire counts. It wasn't until our 4th or 5th test start that we started to get misfire codes. The engine does fire right up with the flick of...
  5. J

    P0300 and P0302 With new long block 1996 K3500 5.7l

    I have been having a lot of problems with my 1996 K3500 5.7l The truck has about 220K miles on it. I recently had problems with it running very rough. I found out I had low compression on two cylinders, So I decided to get a new Long Block. I replaced a lot of other parts with it. -Blackbear...
  6. J

    96 Chevy 5.7 running rough

    Thanks for your reply. My scan tool has not been showing any misfire counts. I have only driven it a short distance though. I did just install a brand new distributor, distributor cap, rotor, plugs and wires. I will need to check the ignition coil output. How do I go about clearing the fuel...
  7. J

    96 Chevy 5.7 running rough

    I am having lots of problems getting my 1996 chevy 3500 with the 5.7 running correctly. About 4 months ago the truck started to run rough. I found out I had low fuel pressure, and that the fuel pressure would drop off almost instantly once the key was shut off. I replaced the fuel pump with a...
  8. J

    4L80E jumping in and out of OD

    I actually had it fog tested. No vacuum leaks. Went through everything when trying to figure out the lean code.
  9. J

    4L80E jumping in and out of OD

    I will test that. Thanks
  10. J

    4L80E jumping in and out of OD

    I would assume its the TC. Its not a hard shift. Just the RPMs jump around and it constantly locks and unlocks above 50MPH. But the transmission also shifts through all of the gears at the wrong time. Sometimes they are hard shifts too.
  11. J

    4L80E jumping in and out of OD

    Yes, I am going to replacing the injectors with new spider injectors. But I would like to know if the transmission is acting like this because of something electrical or something internal.
  12. J

    4L80E jumping in and out of OD

    I have a 1996 Chevy K3500 5.7l with the 4L80E trans Recently my truck has been having problems shifting at the correct times and sometimes it shifts a little hard. Now when I get to around 50mph it jumps in and out of OD or lockup constantly. The truck has low power, which I am assuming is from...
    • Jbarry14
    • Thread
    • 4l80e 5.7l vortec chevy 3500 k3500 tps transmission
    • Replies: 11
    • Forum: Transmissions
  13. J

    96 Chevy 3500 5.7 Bank 2 Lean P0174

    From what I was told by the shop who is doing the smoke test for me, there are no misfire codes. That same shop also replaced the fuel pump and fuel filter and they inspected everything including the wiring. Pressure is at spec now and no pressure leaks down like before. Pump was bad and had a...
  14. J

    96 Chevy 5.7 Fuel pressure issue

    Its not the same problem. This thread was about fuel pressure issue, which has been resolved. My other thread was about a bank 2 lean code... thank you though.
  15. J

    96 Chevy 3500 5.7 Bank 2 Lean P0174

    1996 Chevy K3500 5.7L. I am getting a code for only bank 2 being lean. Originally, I was getting codes for both bank 1 and bank 2 being lean. I had low fuel pressure too. I replaced the fuel pump, and fuel filter. I also replaced the O2 sensors and cleaned the MAF sensor. When the truck is...
  16. J

    96 Chevy 5.7 Fuel pressure issue

    I just wanted to give an update. I had the fuel pump replaced on my truck. That helped with some of the problems. But now I am getting a lean code for bank 2 only. I had a shop put a camera down the intake to look at the FPR and Injectors. The previous owner had the FPR and Injectors replaced...
  17. J

    96 Chevy 5.7 Fuel pressure issue

    Thanks for the reply. I will test the voltage first. The only other thing is I still need to figure out where my fuel pressure is leaking. If the valve in the pump is bad or the FPR is bad. It drops to 0 immediately after the pump shuts off.
  18. J

    96 Chevy 5.7 Fuel pressure issue

    Yeah. I am going to replace the pump and the fuel filter because the pressure is way below spec. I am hoping the fuel pressure is dropping because of a bad check valve in the pump or possible problem with the rubber lines as your were saying. I was trying to see if I could find out the...
  19. J

    96 Chevy 5.7 Fuel pressure issue

    96 Chevy K3500 with the 5.7l It has about 215K miles. I am trying to diagnose a fuel pressure issue. My truck first started to run rough like it had a miss. Check engine light came on. I had codes for both banks being lean. I cleaned the MAF sensor with no change. I checked for vacuum leaks. I...

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