Idle is Low, and lf need to adjust the idle

harleyvolvo · Post by **harleyvolvo** » 17 Apr 2013, 19:04

I have a 1989 740....when my dad had it the idle seemed to high, but when I got it he turned the idle down...now the car is so low until it turns off.....so me being mr. Fix it I tried to increase the accelerator or increase the idle and I ended up messing up the connection to the gas pedal...it's too lose....how do I go about tightening it back up and increasing the idle so that the car doesn't turn off?????

Post by **billofdurham** » 19 Apr 2013, 11:50

The idle on the 740 with the Jetronic LH 2.4 is not adjustable. It is computer controlled.

Low idle is usually caused by a dirty throttle body, a thing that is always overlooked until it causes a problem.

I am curious as to how your dad did reduce the idle speed. One possibility is that he adjusted the throttle position screw (TPS).

Next curiosity point - what did you loosen to mess things up? Throttle cable or throttle link rod?

Bill.