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well me and a buddy have been helping scott240sx with this doozy of an issue.
quick rundown on where we are at.
Problem- Will NOT rev past 4k, at WOT the motor sits on 4k as if there was a ECU controlled Ignition/fuel limiter. Also having cold start issues.. takes 4-5 times to crank over. Car will hold idle now.
things we have done checked.
Motor Grounds- Good
new plugs- Gapped at .34 ish.. Will gap these down to about .30 which is what i ran on on my plugs stock boost.
Tried my Working maf - nothing
Timing is good now
No boost leaks that we have found
all connectors have been checked/cleaned
We have checked voltage at TPS/Maf/coil packs.. all check out fine
we have checked the 5th gear sensor to verify it hasnt gone haywire--this usually causes problems at 5k rpms though.. but we are running out of Ideas.
does anyone know of an ECU imposed limiter that would limit the motor to 4000rpm.
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