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Its got a whistleing noise and it wont idle. 200 thousand
its a 2002 cadilac deville and we tried changing the MAP sensor per the parts store putting it on a machine … read more
J Hall
J Hall
retired
none
620 satisfied customers
I have a 1996 Cadillac Deville and my engine is run hot. I
i have a 1996 Cadillac Deville and my engine is run hot. I have replaced radiator, water pump, water pump housing assembly and thermostat. I pressure tested for leaks which pressure stayed @ 16psi for… read more
Dan
Dan
Technician
Vocational, Technical or Trade Scho
27,355 satisfied customers
Missing going down the road. just changed the coil pack on
missing going down the road. just changed the coil pack on the front of the northstar due to p300 and p304 codes. smoothed it out at idle now rough going down the road … read more
Clayso
Clayso
Shop Owner Master Technician
ASE Master Certified Automobile Technician
879 satisfied customers
Cadillac Seville SLS: I have a 2003 Cadillac SLS with 196,000
I have a 2003 Cadillac SLS with 196,000 miles that just started idling and running rough or surging. Seems like the last time that happened was a little over 100,000 miles and the Cadillac dealer put … read more
Jerry Newton
Jerry Newton
Cadillac Technician
Vocational, Technical or Trade Scho
1,738 satisfied customers
2003 Deville: about 1200 to 1500 rpm..stop sign..always starts
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
Cadillac Technician
Associate Degree
1,522 satisfied customers
2004 Cadillac DTS: 25,000 miles..rough..service engine light came on
I have a 2004 Cadillac DTS (4.6L Northstar) with 25,000 miles. Other than maintenance (lube, oil) it has never required any shop work. A few months ago the engine idled rough and the "service engine" … read more
David H
David H
Vocational, Technical or Trade Scho
2,678 satisfied customers
Deville: northstar engine..started running rough..idleing..coil packs
I have a o3 deville with northstar engine, It started running rough especially when idleing and would be so bad at times that it would shut off. I changed the plug and wires it still did the same. I t… read more
Dan
Dan
Technician
Vocational, Technical or Trade Scho
27,355 satisfied customers
2004 cadillac deville: 56,000 miles..my check engine..lean..light came
I have a 2004 cadillac deville with 56,000 miles on it my check engine lite came on. I have installe my test meter and the codes that came up were 0171 and 0174 lean burn on both banks. I cleared the … read more
David H
David H
Vocational, Technical or Trade Scho
2,678 satisfied customers
2002 cadillac deville: cold start..pedal and it idles smoothly
2002 cadillac deville ( 150K miles ) idles rough after a warm up period but does idle rough at cold start. Driving is ok-- idle rpm at 750 cold OK then when engine has warmed up idles back and forth f… read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
21,993 satisfied customers
1993 Cadillac Allante: Installed new spark plugs..intake..vacuum leak
Installed new Starter in 1993 Cadillac Allante; but when finished, vehicle idle was eradict. Installed new spark plugs and that seemed to help somewhat but it still felt that the so I went back and in… read more
David H
David H
Vocational, Technical or Trade Scho
2,678 satisfied customers
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
Cadillac Technician
Associate Degree
1,522 satisfied customers
1997 cadillac deville delegance: bad gas..gal..catalytic converter
1997 cadillac deville d'elegance very bad gas milage 11-12 miles/gal. Is it due to catalytic converter or a sensore, etc?… read more
Dave Nova
Dave Nova
Cadillac Technician
Associate Degree
1,522 satisfied customers
97 cadillac deville: constant air bubbles coming..radiator..water pump
i own a 97 cadillac deville and it has constant air bubbles coming out of the radiator reservoir. has good vacuum new radiator and water pump.… read more
Dave Nova
Dave Nova
Cadillac Technician
Associate Degree
1,522 satisfied customers
01 cadillac deville,4.6 northstar, vacuum leak @ intake area
01 cadillac deville,4.6 northstar, vacuum leak @ intake area left rear.Replaced gaskets and injector-rings first,then tried swapping injectors,checked head with straight edge and finally replaced plen… read more
Dave Nova
Dave Nova
Cadillac Technician
Associate Degree
1,522 satisfied customers
2003 Cadillac: idle..It cranks well, and as long as I am giving it gas
Hello, My 2003 Cadillac will not idle. It cranks well, and as long as I am giving it gas its good, but when I am not, it shuts down. Anything that you can recommend or should I just take it to the sho… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
11,778 satisfied customers
2001 Cadillac Deville: stalls..IAC..engine lights..idle, the car runs
2001 Cadillac Deville , northstar motor- car will stall after starting up, - if car will start without keeping foot on gas, the idle is down around 400rpm then drops and stalls- If start with foot on … read more
Ironmike
Ironmike
ASE Master ,Ford Certified Master Tech
Vocational, Technical or Trade Scho
3,475 satisfied customers
1997 Cadillac Deville: V8..overheats..the overflow tank weather..cool
I have a 1997 Cadillac Deville Northstar V8 and it overheats, there seems to be a lot of pressure in the overflow tank weather its heating or running cool, I'm wondering if the thermostat is stuck shu… read more
ase_master327
ase_master327
Owner & Student
High School or GED
3,214 satisfied customers
1997 cadillac deville: idles rough..white smoke..smoothly..radiator
I have a 1997 Cadillac devile that idles rough after starting and white smoke comes out of the tailpipe after about 3-5 minutes then clears up and rides smoothly. I have also had to replace the radiat… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
21,163 satisfied customers
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Meet the Experts:

Jerry Newton

Jerry Newton

Cadillac Technician

1,738 satisfied customers

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

Dave Nova

Dave Nova

Cadillac Technician

1,522 satisfied customers

ASE Master Certification. GM World Class Certification

Gm Tech (Cam)

Gm Tech (Cam)

Cadillac Mechanic

1,157 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Chris (aka- Moose)

Chris (aka- Moose)

Cadillac Technician

1,004 satisfied customers

16 years of experience

John

John

ASE Certified Technician

941 satisfied customers

ASE CERTIFICATIONS A1-A8 & L1 / 40 YEARS AUTOMOTIVE EXPERIENCE

George H.

George H.

ASE Certified Technician

792 satisfied customers

ASE Master Tech 15+ Years

Don - Mo Lurch

Don - Mo Lurch

Cadillac Technician

761 satisfied customers

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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