My 89 sticker price was $33,000 new.
NO vac pump in the '79 87&89 Brougham 85-87 deville 89-93 deville 86-86 eldorado 85-87 fleetwood 89-93 fleetwood 86-86 Seville
If your engine is ideling fast its probably temperature senser. There is no adjustment for idle. that last answer is not entirely true. u can adjust the idle. but it depends on if its a throttle body unit that looks like a carburetor or a smaller unit. on a TBI unit, there is a screw u can adjust but the only way to adjust it is with the right tool. its not a Philips screw or straight blade. but if its idling high or fast it might be the idle air control valve. the one went out on my 1985 sunbird and caused it to idle funny.
how do you replace the window regulater on a 89 cadillac deville?
What is the spark plug gap setting for a 89 cadillac deville?
89 road miles.
Head gasket? Low coolant level? Water pump not circulating coolant? Thermostat not opening? Radiator plugged or restricted?
If the idle is constantly high, I would adjust the idle control on the left hand side (facing the car) of the throttle control body.
155
4.5L V8
My 89 shadow did that. The 89 and the 94 have similar body styles so id have to say that it's your oil sending unit(a little wire with a red casing) became detached. Itll make your car Idle low and your car will stall and stutter
If your idle was fine and then just became high, don't adjust the idle control screw. Your problem would be indicative of another issue. Perhaps a vacuum leak. turn the idle control screw to the left ... no neither of those.....your are getting air that is accounted for by the mass air flow sensor....there for its either a) throttle plate not closing or b) idle air controller stuck open.