Engine rpms fluctuate while driving at a constant speed if I let off the gas and resume it then evens out just had a code p02004 which was the control runner had that changed it didn't fix the rpm problem. What can cause this?
My 2007 ford f150 is stuck in limp mode. I've changed the cam sensor and tps. I so cleaned the throttle body and still goes right back to limp mode. It also reads multiple codes after changing the tps. What should I do next?