Help me....KA24DE problems

[SIDEW@YZ_IN_L.V.]

Motor idles fine revs up fine under a small load at like 1/4 throttle, but at half throttle it misfires, and full throttle it completely bogs down and backfires. Just changed plugs, wires, cap & rotor, and fuel filter. The ecu reads no problems.......I have no f-ing idea i've had a few of my friends look at it and there some of the top techs in town and there stumped...

[JeromeS13]

Have you checked the timing?

[SIDEW@YZ_IN_L.V.]

Yep, I think it could be the TPS.

[SIDEW@YZ_IN_L.V.]

COME ON NO MORE REPLIES I THOUGHT PEOPLE ARE HELPFULL ON HERE....

[rogoman]

COME ON NO MORE REPLIES I THOUGHT PEOPLE ARE HELPFULL ON HERE....

We don't like people who are demanding; just learn to chill out; we are helpfull so be patient.

The problem you're describing could be caused by several factors:1 - A vacuum leak causing a very lean fuel mixture; use a vacuum gauge to measure the vacuum.2 - Low fuel pressure; use a temporary fuel pressure gauge to measure.3 - Possible TPS malfunction; check the harness connector pins for oxidation. Measure the TPS resistance change with throttle valve movement from fully closed to WOT.