4k rpm rev limit on hot days?

[Passivality]

Okay, so my promblem is this, when ever its really cold outside (45-50 degrees and below) my car runs fine but then when its hotter out side when ever i hit around 3.5k to 4k rpms its like i hit a brick wall and wont let me exceed those rpms like a rev limmiter kind of. Was wonder what may have happened and how to fix it.

[gthompson97]

Turbo? Awd? What model car and what tranny. Year and mods will help too.

[Passivality]

its a 91 gs, 4g63. when ever i hit 4k rpms its like a rev limiter is kicking in, no idea whats going on.

[northendtrooper]

can you reflash your ECU? maybe its electrical.

[gthompson97]

Originally Posted by northendtrooper

can you reflash your ECU? maybe its electrical.

Very unlikely. I don't even think those ECUs can be flashed.

Passivality, how does the car idle when this happens? And when you say it "hits a brick wall," what exactly happens? RPMs drop and car runs like shit, or it the RPMs stay up and the car just won't go any faster or what? When was the last time you did a tune-up on the car too? Compression test? That will tell you what kind of shape the motor is in, not saying you're gonna need a re-build (actually I'm pretty sure you aren't), but sometimes things like this give a little insight on the whole problem.

[corning_d3]

Fuel pump? Fuel filter? Hard to say without more info...

[laser24]

i seem to have the same problome im almost positive its the fule pump ...im not getting any gas to the fule filter but that could be cause of not enogh gas to pump...and its just been running off the fule in line allready