1979-1993 & 94 Conv [Subscribe to Daily Digest] |
Really need more specifics to answer your questions, but here's a start.
Erratic idle can be something as simple as a slight vacuum leak in one of the many hoses off the intake body.
What I would do first is get a can of carb spray and remove the large hose at the front of the cast metal intake. Then spray the inside of the throttle body and scrub it out with a toothbrush. Get andy built up ridges of gunk wher the throttle plate contacts the body at idle. Scrub both sides of the throttle plate, too. Then, use the same spray to clean your AIC valve, which is located over near where the upper radiator hose connect to the engine. To clean the AIC, first remove the electrical connector and the two air hoses. Make sure the inside is very clean and that the rotor/vane doesn't stick. Normally you can resurrect a bad AIC, but they can get pits on the rotor or burned spots in the motor and need relacement.
If the problem is wide idle swings at first start in the morning, I would suspect a bad AMM and sobstory(site sponsor) has rebuilt units for a good price. If the problem is when warmed up, you might have a tired O2 sensor. However, if O2 sensors get really bad, you won't even get the slight idle variation(thickness of the tach needle) that is normal.
The occasional roughness in the trans might not be the trans, but rather the clutch assembly. Components such as the pressure release(throwout) bearing can get rough. Also the pilot bearing in the center of the flywheel that supports the clutch shaft can get beat up. These items require clutch removal, so should be combined with a full clutch replacement to be practical.
Difficult shift engagement might be a loose shifter ball under the boot or a worn pin at the bottom of the shifter rod, which can be adjusted. Also you might have a bad shift linkage coupling in the shaft going from the shifter into the trans.
posted by 216.75.9...
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
![]() |
![]() |
![]() |
![]() |
![]() |