I need your help. My mechanic can’t figure out why my car won’t rev up higher than 3000 RPM. Before the needle could reach 3000 RPM, it’ll go back down to about 1000 RPM. He just installed a rebuilt stock twins. He said replaced all the solenoids and vacuum lines. He said it could be because a midpipe was installed to replace the catalytic converter. But I don’t think so. Before I had all this work done on the car, it revved up well. The repairs was done because of an oil leak in the turbos. Any suggestions would be appreciated.

 

Try reseting the ecu. It sounds like its in limp mode. Just pull off your positive on your battery and press the brake down for 30s and reattach the positive cable and try starting the car. If its still doing it then pull the code off of the ecu and it will tell you whats going on.

R.K.

 

I had a problem like that with my last car, it was the TPS sensor. just needed to be readjusted.

 

Thanks for your suggestions. I tried them both. But problem still exists. Any other thoughts?

 

Have you checked to see if the ECU has any codes?

Dale

 

Don't forget to check the map sensor and coils. Details on what repairs were made would help as well. Did it run perfectly before it was worked on?