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1996 Cadillac Deville,4.6L V8 DOHC 32V with 99,000 miles.
1996 Cadillac Deville,4.6L V8 DOHC 32V with 99,000 miles. Revs up to 1600 RPM when engine is started and goes to 2200 RPM. Can't slow it down. Had the Throttle Position Sensor changed. Didn't help. … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
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1996 cadillac sedan deville idols very high and sometimes when you put into gear it will c
1996 cadillac sedan deville idols very high and sometimes when you put into gear it will continue to accellerate without any pressing on the gas pedal.… read more
Amedee
Amedee
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Vocational, Technical or Trade Scho
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Cadillac Deville: I have a 2003 cadillac deville. My car will
I have a 2003 cadillac deville. My car will crank up but will shut off . If I hold the gas down it would run. It will also do it when im at a stop light… read more
Doug
Doug
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Cadillac Deville Concours: My 1996 Deville Concours is stalling
My 1996 Deville Concours is stalling out when i am idle or near idle. It does it for a couple days then begins to work correctly again. The throttle seems to be stickier during the stalling period. Th… read more
Jerry
Jerry
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1999 DeVille: engine stays at higher rpm than normal idle(1500-2000
1999 DeVille 100000 miles Sometimes engine stays at higher RPM than normal idle(1500-2000) - no pattern as to when it happens… read more
George H.
George H.
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Associate Degree
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2003 Deville sometimes will not idle. If you hold the foot feet down for several minutes at about 1200 to 1500 rpm then it will go ahead and idle, sometimes it will kill at a stop sign. But it always … read more
Dave Nova
Dave Nova
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Associate Degree
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2001 deville: idling..high and cuts off without warning..accelerator
i have a cadillac 2001 deville i just replace the lower crank sensor and the upper crank sensor. and the car is still idling to high and cuts off without warning .and while you are driving sometimes y… read more
George H.
George H.
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2003 sts: quits..2 main grounds under seat, was a little better
2003 sts quits for no reason- sometimes tricky starting. Fiddled with 2 main grounds under seat, was a little better but now quitting for frequently like before. What is it. High mileage also… read more
Dan
Dan
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Vocational, Technical or Trade Scho
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Deville: caddy..restarting..same thing..a long drive at higher speeds
I have a 1997 caddy sedan deville ,after drive for 4 hrs on xway ,sometimes on speed control . the engine would not return to idle ,after shutting engine off for 1/2 hr and restarting engine perform p… read more
David H
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deville: my 2001..2to5 mins..idle kicks out the car will stall
my 2001 sedan deville starts with no trouble. fast idle is fine but about 2to5 mins after fast idle kicks out the car will stall. sometimes it will restart immed, sometimes i will have to wait for eng… read more
Triston
Triston
High School or GED
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1996 Deville: Cadillac..slow down..accelerator..throttle
Cadillac, 1996 Deville, Northstar engine, 44,000 mi. Engine does not always slow down to idle speed when I take my foot off the accelerator. I replaced theidle air control with no effect, and the thro… read more
Dave Nova
Dave Nova
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My 1991 Sedan DeVille with a 4.9 port fuel injection runs just fine sometimes then will run rough, when I stop in town ,then just as I start to go, will die and not start right away. Sometimes it will… read more
Amedee
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2004 deville: idling..warmed..parked..throttle position sensor
My 2004 deville w/standard engine is sometimes idling out of control after vehicle is warmed up for a few minutes. It must be shut-off immediately when parked or ervs will exceed 3,000 rpm. I have rep… read more
Tim West
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DeVille: PCM..a cleaning of throttle plate and body bore
I have an 02' DeVille DTS....Recently had a PCM replaced, and yesterday dealer did a cleaning of throttle plate and body bore. Problem has been eratic idle...goes from high to normal...use to go so lo… read more
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2003 DTS: only getting 800 miles to the quort of oil...od
I have a 2003 DTS . I am only getting 800 miles to the quort of oil. this engine has 93000mi on the od. do you have any sugg.… read more
Derek B
Derek B
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10 minutes..freeway..I pull to the curb- car in Park idle Rpm 1100
1999.Only owner.119,000 miles.This problem has been occuring for appx one yr, off and on. Cad dealer has not been able to fix.Typical occurance: Drive to work: XXXXXdriving to freeway ("idle Rpm" 700 … read more
rpmdiag
rpmdiag
High school
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DEVILLE: 90,000 MILES, IT DOESNT SMOKE,RUNS LIKE NEW..QUART..ADDITIVE
HELLO, I HAVE A '1997 CADDY DEVILLE 4.6 NORTHSTAR, IT USES OIL, THE CAR HAS 90,000 MILES, IT DOESN'T SMOKE,RUNS LIKE NEW, BUT IT USES ROUGHLY A QUART EVERY 5 TO 600 MILES. IF YOU REALLY GET ON IT AND … read more
john -aka eauto
john -aka eauto
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cadillac: degrees..it , put new thermostat..radiator..0% oil level
My cadillac ran hot 270 degrees, my husband pulled over put water from ditch in it but it com=ntinued to boil. Computer in car said to stop engine ,change oil, a wrecker came and got it , put new ther… read more
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Meet the Experts:

Jerry Newton

Jerry Newton

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ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.

Dave Nova

Dave Nova

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John

John

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Chris (aka- Moose)

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George H.

George H.

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Don - Mo Lurch

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GM, Cadillac Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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