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  1. U

    Cold acceleration stumble/hesitation

    Fuel pressure check is needed (critical) Also check the CTS (Cooling temp sensor)
  2. U

    Code 32

    Never underestimate a flaky ground wire as the source of your frustration/s.
  3. U

    Does anyone know what this is???

    https://www.rockauto.com/en/moreinfo.php?pk=46600&cc=1059634&pt=4380&jsn=923
  4. U

    Does anyone know what this is???

    https://www.ebay.com/itm/315069060162
  5. U

    Suburban driving me crazy!!!

    How are the injectors themselves? When is the last time they were serviced? Another check the grounds. Clean, clean ,clean...
  6. U

    Needing help with transmission

    12 is not technically a code. It will begin and end with 12 always. The codes are after 12 finishes flashing at the beginning 3 times.
  7. U

    Weird starting problem

    Cables themselves is the issue.
  8. U

    Bouncy Idle, Eventually Dies 94 Chevy Pickup

    Next step is to confirm fuel pressure. Purchase this and install it at the fuel inlet. https://marine-performance-parts.com/cfmtechfuelpsiguageadaptorforgmtbi2843505774.aspx Also pick up a schrader 1-8 mnpt...
  9. U

    Tbi fuel pressure

    https://www.gmt400.com/attachments/20230429_001247-1-jpg.340464/ I use a quick connect fuel pressure tester. Use Gasoila E-Seal when sealing the fuel pressure fitting.
  10. U

    TBI Rebuild Services

    https://www.sprperformance.com/
  11. U

    TBI 454 Misfire

    Did you thoroughly check the throttle shaft ends for vacuum leaks?
  12. U

    Trying to find the right throttle body

    Head on over to here and you likely will find one who can help source the part... http://www.gearhead-efi.com/Fuel-Injection/forum.php?s=29b827bf16a1570472a99e3e5f7dc6a6 94-95 had pressure of 26-32psi vs 9-13. They also used different spec injectors.
  13. U

    4L80E to TR400 Trans swap 1995 Chevy P30 chassis motorhome

    The 94-95 454 TBI had fuel pressure of 26-32psi preferably 30psi. They also had different injectors. You sure it has the correct injectors in it?
  14. U

    How do i do a tune up? 1995 Chevrolet K2500HD 7.4l

    One thing I would replace that was not mentioned is the 'pick up coil' within the distributor. The one you have is likely original. You'll need to pull the distributor to replace it. Delco or Delphi only when replacing parts. As for wires I run the NAPA HD truck wires with ceramic boot ends...
  15. U

    Code 35?

    I had a code 35 issue that was very very intermittent. I could go 1000+ miles without one and then...always showed when coming to a stop then moving selector to 'Park'. SES would come on. I changed the IAC with (2) different makes of IAC valves and same results. Even rebuilt the TBI and new...
  16. U

    Performance upgrades

    Less than 2 mile to work = oil not reaching operating temp to burn off condensation = less fuel mileage = more sludge build up = more engine wear
  17. U

    Can't figure out backfire through throttle body

    Check the reluctor on the distributor for crack/s.
  18. U

    Did I screw up my Engine? Lucas ZDDP - Good running TBI

    Excessive ZDDP will also foul plug/s.
  19. U

    Hard Start in cold

    Cooling temp sensor
  20. U

    95 454TBI stumbling

    Have you checked the distributor reluctor for crack/s? And get some wire heat wraps on the plug leads or they'll burn up quick.
  21. U

    Stumbles in overdrive

    Could be a bad TPS.
  22. U

    1992 7.4 Oil?

    The EPA has already been greatly limited by a few SCOTUS rulings. IOW...sit down the court said.
  23. U

    1992 7.4 Oil?

    When cam-less engine technology hits the market EV will disappear.
  24. U

    1992 7.4 Oil?

    Over the years there has been an overabundance of engine oil myths. Here are some facts you may want to pass along to customers to help debunk the fiction behind these myths. The Starburst Oil Myth -- The latest myth promoted by the antique and collector car press says that new Starburst/ API...
  25. U

    94 stumbles and dies once warm.

    EGR

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