ok, My car is a 91 civic hatch. It starts fine but after 15 mins or so i lose all my power and,if i rev it, it pops at 3500rpms like i have a revlimiter but i don't have one. I have tryed changing my hole intake,dis cap and roter,cleaned my injection.I thought it mit be my ECU. PLEASE HELP

 

Have you done any electrical work to the motor? Are all cylinders firing correctly? i.e. timing or fouled plugs

 

when was the plugs and plug wires changed

 

That sounds like the Main Relay. When they go, it takes about 15 minutes for it to heat up, then it shuts off the fuel pump.

http://techauto.tripod.com/mainrelay.htm

 

no i have not done any wireing work yet.and the plugs and wires are new.
were is the main relay at? if that was it would other stuff not work?

 

what other stuff does not work;
it is under the dash up against the left side kick panel about where your left knee is when sitting in the driver's seat (all the way to the left of the knee)

 

no everything works great.Thanks i will try that

 

i had the same problem, it was the tdc sensor. is there a cel?

 

what do u mean cell.and were is tdc at?

 

CEL = check engine light. is the tdc sensor the crank sensor that sense Top Dead Center?