Search results

  1. S

    97 5.7 sierra, poor acceleration, +15-20 fuel trims.

    I tried unplugging the egr this morning, no difference.
  2. S

    97 5.7 sierra, poor acceleration, +15-20 fuel trims.

    The transmission does kickdown. By sings I meant the rpms dont limit out before they are supposed to, gets real loud but no power. Good to know about the pressures, thank you. I haven't don't much diagnosis on the egr yet, saw a few posts last night that sounded kinda similar to what I've...
  3. S

    97 5.7 sierra, poor acceleration, +15-20 fuel trims.

    I removed them a month or so ago :/
  4. S

    97 5.7 sierra, poor acceleration, +15-20 fuel trims.

    Been dealing with this issue for a while, really poor acceleration. Happens in all gears, when stabbing the gas pedal the rpms don't rise out of proportion which has me thinking the trans isn't slipping? Looking to verify line pressures soon, thinking it could still be boost valve. Did pan drop...
  5. S

    Cluster guage insert seperating

    Yeah I'm gonna pickup a new cluster soon I just don't have the funds at this time and needed a quick fix. Although all my guages are working great now, I proved your theory at the same time. At least new clusters are only 70-80
  6. S

    Cluster guage insert seperating

    My 97 sierras cluster insert with the guages on it has started to seperate, its causing the plastic to push against the needles and preventing the needles from moving. My plan is to remove the needles, remove the insert and clean up both pieces before super gluing it flat again, if anyone has...
  7. S

    97 gmc k1500 5.7 weird fuel trims, low power.

    At idle my long term fuel trims will climb till they reach 17~ but when I drive and I'm at 2.5-3.5 rpm the longterm drop to 0-5 and the short terms jump to 25. Under heavy load 3.5+, like when passing on the freeway the short terms drop back down and the long term jumps up to 15-17. Really crap...
  8. S

    Low on power

    Thanks
  9. S

    Low on power

    Gmc sierra k1500 1997 5.7 Started after I was dealing with a bunch of misfire issues, thought I jumped a tooth so I replaced timing chain and sprockets, hadnt jumped any teeth, still low on power and misfiring. ended up checking the skp distributor i bought and the cap was shot, replaced cap...
  10. S

    Vortec 5.7 vacuum leak

    Update for anybody doing web searches: ended up being a bad fpr out of the box, delphi brand.
  11. S

    Vortec 5.7 vacuum leak

    I ended up just getting a new gasket set, I didn't feel a click but I pulled up pretty hard, the plenum was sitting completely flush and the meter body harness plug clips clicked into place. Same issue :/ I'm really just not sure what I messed up. The truck runs really good for about 10-15...
  12. S

    Vortec 5.7 vacuum leak

    I'll give this a try tomorrow, I definitely didn't feel it snap in, just kinda slid into place.
  13. S

    Vortec 5.7 vacuum leak

    I was set to do my fpr and noticed milky oil before taking off anything, since the kit I ordered came with lower gaskets as well I decided to do them. Everything went pretty well although it took a long time. Now I'm dealing with a vacuum leak, LTFTS pinning at 25, STFTS during startup are at...

Latest posts

Staff online

Members online

Total: 1,530 (members: 39, guests: 1,491)

Forum statistics

Threads
64,590
Messages
1,397,076
Members
52,057
Latest member
kreeperthebro

Share this page

Top