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My 94 cadillac sedan deville 4.9 will not start, won't even
My 94 cadillac sedan deville 4.9 will not start, won't even make sound when I turn the key over… read more
AZTechBrian
AZTechBrian
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Vocational, Technical or Trade School
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Cadillac Sedan DeVille: . I am purchasing a 1991 Cadillac
Hello. I am purchasing a 1991 Cadillac Sedan DeVille 4.9. with 71,000 miles. The engine sounds fine at idle when cold but when warmed up it runs rough and has a miss at idle and coming off idle to abo… read more
Jerry Newton
Jerry Newton
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Cadillac coupe de ville: , I have a really nice "A"
Hello, I have a really nice "A" title '90 coupe deville, she needa an air management valve, discontinued by GM a used one will have to be ok....… read more
Dan
Dan
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Cadillac deville: 1994 cadillac sedan deville/4.9/ fuel pump
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Roy
Roy
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111mk, Cadillac Deville: hi - TB injectors only was was squirting
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Mike S.
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Cadillac Deville Touring: I have a 1991 cadillac deville 4.9.
I have a 1991 cadillac deville 4.9. I have problem putting it in reverse. I have to move forward before it can be reverse. I could not find a mechanic until next week, any idea what the problem is? Co… read more
Eric
Eric
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N/A
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Cadillac Deville: I have a 1991 Cadillac Deville with the 4.9
I have a 1991 Cadillac Deville with the 4.9 V8. It started missing so I took it to a local mechanic and he changed the spark plugs, spark plug wires, new rotor at Distributor. It still missed. He took… read more
Jerry Newton
Jerry Newton
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Vocational, Technical or Trade Scho
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1995 cadillac: left side under engine compartment a little..wheels
1995 cadillac sedan deville 4.9 spraying gas to the left side under engine compartment a little behind the fornt wheels… read more
Dan
Dan
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1994 cadillac: liter..runs great at times..backfires..coil and module
i have a 1994 cadillac sedan deville 4.9 liter vehicle runs great at times and then backfires and runs poor other times changed coil and module… read more
Dave Nova
Dave Nova
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Same 1991 Cadillac Sedan Deville with the 4.9. I still have a miss.
On this same 1991 Cadillac Sedan Deville with the 4.9. I still have a miss. It seems to be on the #8 Cyl. I have replaced both the plugs and wires. And the fuel pressure is correct. What could still b… read more
Pete
Pete
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1992 cadillac: heater motor wiring harness or a schematic showing
could you tell me where to find the heater motor wiring harness or a schematic showing where it would be on a 1992 cadillac sedan deville 4.9 engine… read more
brownjeff
brownjeff
Associate Degree
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1995 cadillac: a v8 4.9 liter (no northstar..autozone..flashers
Can a multifunction switch for a 1995 cadillac sedan deville with a v8 4.9 liter (no northstar) be easily replaced and can it be purchased at a autozone or somewhere. Do you have any ideas? My signal … read more
David H
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DeVille: a 4.9 port fuel injection runs..run rough..die..interstate
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
Amedee
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DeVille: I checked it with a timing light and it is WAY off.
How do you set the timing on a 1991 Sedan DeVille? I checked it with a timing light and it is WAY off. Not even in the range of the teeth. It is left of 20 degrees.… read more
Don - Mo Lurch
Don - Mo Lurch
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1991 Cadillac: MAP sensor..Throttle..o2 Sensor..same problem
I just replaced the MAP sensor on my 1991 Cadillac Sedan Deville, I have replaced the Throttle positioning sensor and O2 Sensor. I am still having the same problem of bogging down when I step on the g… read more
John
John
ASE Certified Technician
2 YEARS COLLEGE
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i need all of th pcm ,po io,to diagnostic codes for a 94 cadillac
i need all of th pcm ,po io,to diagnostic codes for a 94 cadillac sedan deville 4.9 also need a print out on whats the location and names of all the relays in the trunk behind the back panel and the r… read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
8,291 satisfied customers
1991 deville: bogging..cap rotor, plugs still doing the same thing
1991 deville 4.9- feels likes its missing, heavy bogging. Replaced wires, cap rotor, plugs still doing the same thing… read more
rpmdiag
rpmdiag
High school
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1991 Cadillac DeVille: throttle body..air cleaner housing..accelerates
I have a 1991 Cadillac DeVille. 4.9 engine. I just cleaned the inside of the throttle body and put the air cleaner housing back on and now the engine accelerates on its own . I just tap the accelerato… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
19,113 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

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ASE Master Certification. GM World Class Certification

Gm Tech (Cam)

Gm Tech (Cam)

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1,090 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

John

John

ASE Certified Technician

941 satisfied customers

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

Chris (aka- Moose)

Chris (aka- Moose)

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16 years of experience

George H.

George H.

ASE Certified Technician

783 satisfied customers

ASE Master Tech 15+ Years

Don - Mo Lurch

Don - Mo Lurch

Cadillac Technician

705 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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