1. Timing is right. Make sure it is set at 750 rpm, or the reading will be off.

2. The higher idle is the cause of the cyclic rpm when the brake is applied. Leave the idle where it is when setting the timing.... It will bump up some when the jumper is disconnected.

3. Follow the steps in 4crawler's link for TPS setup. I don't think this is the cause, since the timing settings work out when shorting the check connector. Find out how the auto bumps up the idle when in gear, and look there. Something is sticking, and now allowing the idle to come up when in gear.

"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy

Proud owner of an 88 Montero (with a blown engine).