View Full Version : 96 5sfe won't rev past 3k rpm

02-17-2007, 06:51 PM
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.


02-18-2007, 07:47 AM
Bad gas.

02-18-2007, 04:57 PM
wouldn't bad gas also cause idle problems? right now, once the car starts it idles fine.

10-07-2008, 11:59 PM
A faulty knock sensor may be retarding the ignition alot at 3k, the ignitor might be bad, or a blockage in the fuel system may not be allowing the fuel pressure to be high enough to turn the engine that fast. However since the timing light isnt even flickering after 3k, its probably electrical. Worst case scenario, your ecu is bad. You didnt use the ecu off a 5sfe with a 3sfe did you?

10-08-2008, 02:59 AM
If you truly reused everything, your issue is the ignitor. You must use the ignitor for the 3sfe engine. Try switching it and get back to us.