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1989 760 Turbo rough idle[ALL/1998] posted by Richard Raynor on
Monday, 27 October 1997, at 3:08 p.m.
I recently bought a 1989 760 Turbo with 82,000 miles. I immediately had an 80,000 mile service performed, which included new plugs. During the service I found out that a new head gasket was needed, so I had it replaced. After driving the car for about 200 miles I noticed the engine was idling roughly. The car vibrates and the tachometer pulses up and down. I then put on new wires, cap and rotor, set the timing, put in a new impulser, and had the throttle housing serviced. The car ran a little bit smoother, but not much. My mechanic told me to use the highest octane gas I could find, and I have been using 92 octane fuel, however, the car still runs rough. Any ideas?
Re: 1989 760 Turbo rough idle[ALL/1998] posted by Dave Stevens on
Monday, 27 October 1997, at 4:37 p.m.
You're probably talking throttle body cleaning/adjustment.
Go checkout this thread (a rather verbose posting from some crackpot with the same name as mine) for more background.
Re. Knocking sense into a dealer
Re: 1989 760 Turbo rough idle[ALL/1998] posted by Topi on
Monday, 27 October 1997, at 11:46 p.m.
Listen - why do you call him "crackpot" ? He makes more sense than you...Be proud and don't tell it isn't you!
Re: 1989 760 Turbo rough idle[ALL/1998] posted by TUBE on
Wednesday, 29 October 1997, at 10:48 p.m.
Hej Ray
Having a rough out of new car experience Eh!
Have a look at the hot air flap in the air box.Its temp controled.As warm is collected from the hot air pick up the air heats up a small device that cotrolles the flap/hot air pickup.It should be open when air and engine temp are low.
Have a look cold and then when its hot see if it moves after a good drive when its all hot.If not you might have to replace it,easy enough.It will always be in the open for hot air position if its not working properly.
GL/ Tube.