What cause the engine not to rev past 2500 rpm's? As being a mechanic I tried many things but have not found out what the problem is. I checked the catalytic converter, the sensors ( CPK, CMP, TPS, O2, MAF) everything is okay. Replaced the fuel pump, the injectors, the spark plugs, the sparks plugs cables (all four). I replaced the piston rings, the cylinder head but the engine will not rev past 2500 rpm's. Replaced the ECM after checking the harness from ECM to every sensor or actuator, the problem is still the same. The only thing I have not replaced are coils. The engine runs very well at idle even when I switch the A/C on. There is no misfires. When I compare the engine data with data from known good engine, the only thing that is different is the injection time. The broken engine injection time reaches 12 ms when the good engine injection will not go above 3 ms at the same speed. Thanks in advanced.
have the same problem?
Tuesday, October 4th, 2016 AT 2:11 PM