Chris Grayson has been involved in Merkur XR4Ti performance for a very long time. He formed MC2Racing to provide quality performance parts t...
DAVID GODFREY'S MANUAL CLUTCH ADJUSTER David Godfrey is somewhat of a legend in the XR4Ti circles. He was one of the first to figure out...
David Godfrey's XR4Ti Rear Disc Brake Conversion David Godfrey is somewhat of a legend in the XR4Ti circles. He was one of the first to ...
Saturday, April 20, 2019
You have to disconnect the Idle Air Controller connector. It's just above and forward of the valve cover oil breather.
First get the engine to normal operating temperature. You will have to set the base idle before setting the TPS voltage. To set the TPS you need to probe the green wire and the black wire with a digital voltmeter. Do this with the engine off but with the key in the run position.
Hook the green wire to positive and the black wire to negative. The voltage should read between .95 and .99 volts. Any car with the PE ECU should be set to .90 or .91.
To adjust the TPS you need to loosen the two screws and rotate the TPS. Be careful not to damage the gasket.