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I have a 1993 Cadillac Deville 4.9 liter engine. Traveling
I have a 1993 Cadillac Deville 4.9 liter engine. Traveling on the Interstate the car just started losing power and bucking and jerking and spitting and back firing until it finally cut off. I was able… read more
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Hi I have a 78 cadillac seville, It is fuel injection it used to pop and took a while and the pumping of the gas to get it to start it was fine once it warmed up. It has sat in a garage for about 5 ye… read more
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I have a 2000 cadillac deville. It has been running fine and
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1994 cadillac sedan deville 4.9 engine hei ignition no codes had bad catalytic converter was replaced along with muffler ran great a few days later customer said engine started bacfiring. car runs gre… read more
Jerry
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My 1987 broham RWD 307ci has the quadrajet that gets a signal from an oxygen sensor. It runs fine for 20 minutes/20 miles and then all of a sudden will not accellerate nor maintain speed. Eventually i… read more
Jerry Newton
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I have a 1989 cadillac deville, Ive replaced several parts
I have a 1989 cadillac deville, I've replaced several parts on it including a fuel pump and the car will run but it has trouble pulling once you drive it. Wont go over 20 ml it's like it's not getting… read more
Mike S.
Mike S.
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1987 CADILLAC: cyl..fisrt MILE OR SO..STALLS..CATALYTIC CONVERTER
DEAR SIRS I HAVE A 1987 CADILLAC SEDAN DEVILLE WITH 4.1 LTR 8 CYL ENGINE....WHEN THE ENGINE IS COLD IN THE MORNING AND I START IT UP TO GO TO WORK AS I DRIVE IN THE FISRT MILE OR SO THE ENGINE RUNS RE… read more
cartech
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master tech
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1999 cadillac deville: heater core, antifreeze..idling..cap
I have a 1999 cadillac deville that i have replaced thermostat, recovery tank, heater core, antifreeze but will still reach 225 degrees just idling and will still climb. but i shut engine down. even w… read more
Randall C
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limit: sedan..good acceleration and runs great at hi-way speed..egr
1994 sedan dev.136k just failed emissions ( HC GPM ) 4.09 limit 2.25 car has good acceleration and runs great at hi-way speed, but is missing at low rpm. thought it might be EGR but no trble code for … read more
David H
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Vocational, Technical or Trade Scho
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1995 Cadillac Eldorado: rough idle..acceleration condition..plug wires
I need to know what to check for a very rough idle and low power on acceleration condition in my 1995 Cadillac Eldorado with 52,000 original miles. No other problems and this came on suddenly. I have … read more
Danny
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1992 cadillac: #2 At idle warm or cold slightly rough..wrecking yard
1992 Cadallac Coupe Deville 4.9 #1 Are fuel injectors rebuildable #2 At idle warm or cold slightly rough. Next weird question, when I go to any wrecking yard I notice that EVERY 4.9 Cads fuel injector… read more
Randall C
Randall C
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Vocational, Technical or Trade Scho
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1992 Cadillac: radiator fan..started running..ignition switch..circuit
I have a 1992 Cadillac Sedan DeVille. I am having trouble with the heater fan motor, the air conditioning compressor and radiator fan motor. The heater fan motor started running all the time even thou… read more
Ivan
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2000 deville: changed thermostat..cooling system..vent valve
2000 deville changed thermostat but can't seem to get cooling system full of water is there a vent valve some place… read more
David H
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Vocational, Technical or Trade Scho
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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
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2003 Cadillac Deville DTS: The Service Engine Soon light went
I have a 2003 Cadillac Deville DTS with app 100,000 miles. The Service Engine Soon light went on, the air conditioner stopped working. The dignostic at OnStar said several things: 1. Torque converter … read more
michael
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High School or GED
667 satisfied customers
1994 Cadillac Deville: EGR..Cap & Rotor, Catalytic converter & the car
Hello, I am a heavy truck tech, cars are not my thing anymore. My friend at work has a 1994 Cadillac Deville, 4.9L. He has failed Emissions, High Nox, He has replaced the EGR, EGR sensor, Cap & Rotor,… read more
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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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