|
Possibility the over Voltage Protection relay is faulty....it lives behind the rain cover back of the battery...has a red 10 amp fuse on the top.
Check the date on it...older than 5 years it's due replacement.
The frequency control setting is very critical for warm idle control.
Target speed is 800 rpm +/- 50 rpm.
If the c/o value is off, this will overdrive the fuel mixture control and cause the idle to fluctuate or stall.
You need to check c/o frequency...should be 50% and fluctuating a little...............
the coolant temperature sensor also sends a signal to the ECM to tell it what the operating
temperature of the engine is to adjust fuel and timing.
Cold....pin to ground....2000ohms or more.
Warm...380 to 360 ohms.....both pins should read the same....it's a two pin sensor at the rear of the cylinder head next to the number 6 intake runner.
.
|