96 5sfe won't rev past 3k-FIXED Options

[two55309]

OK a little bit a history first. 1996 celica with a 5sfe 2.2. brother in law threw a rod in the car gave it to me. Replaced the engine with a 3sfe block and used everything else from the 5sfe (i mean everything. all i used was the block and head from a 3sfe) got everything back together and car fired right up. ran perfect no problems. drove to the gas station. got some new gas in the tank. drove home (ran perfect all the way back) parked the car for the week because still needed to fix a steering leaking problem. Next weekend, started car went for a little ride around the neighorhood to let things warm up. Half way through the ride, car started acting up. Wouldn't rev past 3k. Would hit 3k and knock back down to 2k. Acts like engine dies and then comes back. Replaced the spark plugs, the coil, the dist cap and rotor. Also replaced the crank angle sensor (it had given me trouble before and so i went ahead and replaced it.) Still the same problem.

It's weird. The car is hard to start now, taking a couple of tries before finally starting, and then if you hit the gas before its warm it dies. Once the car is warm its fine. But once you try to rev, it hits 3k, dies, picks backup at 2k and idles okay. I know it dies at 3k because i can hook up a timing light and watch and at 3k the light quits flashing.

Anyone have any ideas at all? The only thing i can think of at this point is a possible fuel system problem.

thanks

This post has been edited by two55309: Feb 25, 2007 - 10:32 PM

[Silver94CelicaOw...]

Hmmmm. Thats pretty odd then.

It sounds like something on the 3SFE doesn't quite agree with the 5SFE ECU. It could be a matter of something simply putting out the wrong resistance for the computer to read, I just don't understand why this would happen a week later and not occur right away.


I would examine the problem closer, maybe post up a video of what happens for us to check out.