MaintenanceGuy
Registered User
Im not a mechanic nor do I claim to be. I'm just a do it myself guy or get my buddies to help. But bear with me if I don't make sense of things... I have a 1990 F250 supercab 7.3 IDI
So driving along around 45-65 the truck goes into OverDrive and when I try to maintain a speed it doesn't shift but it drops about 300rpms and back up 300rpms. I've replaced the VSS on the rear axle, the TPS on top of the engine, the neutral safety switch in the transmission, and the brake switch on the brake pedal. It still does it..
Then last night I figured out, while my foot is in the throttle going 45-65 it does it everytime I turn the right turn signal on.. help please!
So driving along around 45-65 the truck goes into OverDrive and when I try to maintain a speed it doesn't shift but it drops about 300rpms and back up 300rpms. I've replaced the VSS on the rear axle, the TPS on top of the engine, the neutral safety switch in the transmission, and the brake switch on the brake pedal. It still does it..
Then last night I figured out, while my foot is in the throttle going 45-65 it does it everytime I turn the right turn signal on.. help please!