After recently trying to tune my ute, I didn't notice any difference in the engine idle after shorting the timing connection (one located near brake booster). I've done the self diagnosis test and it appears to be the coolant sensor, tested this and still no joy. Any way to clear the codes and see what happens? THere has been no real power in the ol' girl for some time and thought this may be place it has come from.
Vehicle: 89 XF ute, carby, 4.1 unleaded.