1993 Buick LeSabre Q&A
1993 Buick LeSabre Question: high idle speed
I have found that the throttle body to intake manifold gasket splits on these engines and that will cause a very high idle. It acts like the throttle blade is open too far. Also, what is the TPS reading. It should not read above .5-.6 volts max. If it does, the Computer will think that the car needs power and will open the IAC with the presumed opening of the throttle. Hope this is a help. Do you have a Check Engine Light on? If so, you can pull a code and see what it says this could be big help. Also if your Charging System is weak, the computer will boost the idle to help charge the Battery. Is there a Battery Light On? - dandd
Seems to me that the idle speed control motor needs to be reset to the desired speed by using a special tool that tells the pcm that it is at idle or off idle which then takes care of the amount of fuel and air mix.This needs to be done this way to set the pintle in the valve because the idle setting is nonadjustable.This thing plugs into the IAC motor and the the other end into the harness that feeds it - JimJ
Have fairly frequently (every 25000 mi.) had to replace the front wheel brakes. We experience little or no engine braking. Must keep foot on the brakes when waiting at traffic signals. Dealer say...
after starting can hit speeds of 30-40 mph without touching gas pedal, when I get home (about a mile and half drive) put in park engine reeving really high. if I let car warm up for 10 minutes usua...
i use castrol edge 10w30 can any one tell me what the oil preasure should be at cold start up-at idle-at crusing speed after it is fully warmed up. the oil and filter is changed every 3,000 miles.
When starting the car,the air pump lifts shocks to max. height. The car stays at max. as long as the runing and being driven. Is there a manuel available system?