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My 99 cadillac deville seems to be having a problem with idling. the engine races up and down when the car is at a stand still and it sometimes goes off when moving at slow speeds.
My car won't idle well either especially if its gotten a little hot. I have noticed idling while the car is like 205 temp for coolant and it shuts off and the red oil light comes on. If I brake to idle it will kill as well.My car won't idle well either especially if its gotten a little hot. I have noticed idling while the car is like 205 temp for coolant and it shuts off and the red oil light comes on. If I brake to idle it will kill as well.
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Check for loose vaccum hoses. If everything looks in place, I would suggest you collect as much information as possible: Engine light on? what is the troublecode?
Is your check engine light on while your driving? If it is get a hold of a scran tool to find out what codes are showing.Or most auto parts supply stores have one end will check it for codes, Most of them don,t charge to check it out for you.
If the check engine light is not on, I would look at the fuel pressure and vac leaks. Mechanical problems can occur without triggering the check engine light.
I A C motor small part on throttle body ,controls idle mixture when they fail at idle the engine "hunts" for proper air/fuel mixture . when defective it causes o2 sensors and TPS to compete to set an idle thus the up n down effect.. auto wreckers if your broke new from your local parts store....dealer to much 1 plug in two bolts for most applications
they all are wrong .i was a service tech for Cadillac for 15 year and guarantee you that the problem is in you're crank shaft sensor .Cadillac redesign the sensor on 2002.check for code you'll find p0355 and p0385 .replace the sensor and reprogram the new ones.good luck Danny.B
My car won't idle well either especially if its gotten a little hot. I have noticed idling while the car is like 205 temp for coolant and it shuts off and the red oil light comes on. If I brake to idle it will kill as well.
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