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Miss firing 135. 2003 cts 3.2. Replaced spark plugs and coil
miss firing 135 JA: What is the model/year of your Cadillac? Customer: 2003 cts 3.2 JA: Are you fixing your CTS yourself? What have you tried so far? Customer: replaced spark plugs and coil pack JA: H… read more
Jerry Newton
Jerry Newton
Cadillac Technician
Vocational, Technical or Trade Scho
1,738 satisfied customers
I m. 2006 cts. Not fixing myself. Car has a rough idle only
car has a rough idle only when in gear standing still … read more
Chris (aka- Moose)
Chris (aka- Moose)
Cadillac Technician
Vocational, Technical or Trade School
811 satisfied customers
I replaced the ecm and i still get p0036 p0058 p0030 p0135
i replaced the ecm and i still get p0036 p0058 p0030 p0135 p0141 p0161 p0134 … read more
Chris (aka- Moose)
Chris (aka- Moose)
Cadillac Technician
Vocational, Technical or Trade School
811 satisfied customers
I have CTS 2003, 2.6l (VIN 1G6DG57M930144852) which needs
Greeting, I have CTS 2003, 2.6l (VIN 1G6DG57M930144852) which needs engine rebuild due to burning oil and smoking while idle. There is a 2003 engine 2.8l engine available. Is it possible to swap engin… read more
Jerry Newton
Jerry Newton
Cadillac Technician
Vocational, Technical or Trade Scho
1,738 satisfied customers
My friend has a 2003 cts and its throwing 301 303 305 cylinder
My friend has a 2003 cts and its throwing 301 303 305 cylinder misfire codes. I am thinking the belt jumped a tooth. The motor idles and clacks on left side at low rpm… read more
Kavey
Kavey
86 satisfied customers
Cadillac: got a 2003 Cadillac CTS 3.2 the car when it gets
got a 2003 Cadillac CTS 3.2 the car when it gets to a quarter of a tank will start misfiring and Its not out of gas I've driven another 25+ miles add gas bring it up around half a tank misfire goes aw… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Cadillac CTS: I am trying to replace the ECT sensor on a 2003
I am trying to replace the ECT sensor on a 2003 Cadillac CTS with the 3.2 liter V6 engine. I downloaded the Chilton DIY repair manual for this car which instructed me to remove the Windshield Wiper mo… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Cadillac CTS: engine oil in overflow tank 2003 cadillac CTS
engine oil in overflow tank 2003 cadillac CTS 3.2 L . tranny fluid checked drained from tranny looked good, not contaminated with any water or antifreeze. Radiator has been changed, same problem . Any… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
Cadillac CTS: I have a 2003 CTS with the 3.2 and just did a
I have a 2003 CTS with the 3.2 and just did a motor swap do to a bad head gasket. Engine runs fine now but goes into limp mode when power is applied. I scanned the engine while at idel and it's saying… read more
TIM MOHR
TIM MOHR
SHOP OWNER
Master's Degree
8,037 satisfied customers
Hi , my moms cts 2003 v8 is idling rough at about 750 rpm,
Hi , my moms cts 2003 v8 is idling rough at about 750 rpm, is it easy to change plugs or should i start somewhere else?… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
installed a new timing belt on my 2003 cadillac cts. now the
installed a new timing belt on my 2003 cadillac cts. now the engine 3.2 will not get above 29000 rpms all marks lines up starts and runs fine… read more
Jerry Newton
Jerry Newton
Cadillac Technician
Vocational, Technical or Trade Scho
1,738 satisfied customers
2003 Cadillac CTS: the check engine light came..chugging..rough idle
Hi, I have a 2003 Cadillac CTS with about 114K on it. It has the 3.2 engine and the other day the check engine light came on and it has been slighlty chugging/rough idle at times when I am at a stop. … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
2003 CTS: car will not start properly and idling is rough and unstable
Good morning, I own a 2003 CTS, with a 3.2 motor. Here is the problem on this vehicle. The car will not start properly and idling is rough and unstable. 1 out of every 3 start ups, will not function. … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
2003 CTS: V6..rough idle..If I rev the ingine an extra 100 rpms
I have a 2003 CTS V6 3.2 I Have had the car for 2 years, bought it used with 54k. Ever since ive had it the car has a slight shake/rough idle also when you turn the heat or A/C on the idle gets worse … read more
JHoop
JHoop
Owner,Technician
High School or GED
2003 Cadillac CTS: i repalced my thermostat..dtcs p1779 and 1791
I repalced my thermostat on a 2003 Cadillac CTS yesterday. When I started the car I got DTC's P1779 and 1791. THESE CODES WERE NOT PRESENT PRIOR TO THE THERMOSTAT CHANGE. ANY INSIGHT ON WHAT WENT WRON… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
how do you change the spark plugs in a 03 cadillac cts sports
how do you change the spark plugs in a 03 cadillac cts sports luxury and what else needs to be replaced.… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
2005 cts: 2004-2005i want to put on an aftermarket exhaust..fit my
is the exhaust systems the same for 2004-2005 I want to put on an aftermarket exhaust on my 2005 cts but I need to know if one for a 2003-2004 will fit my 2005… read more
Dave Nova
Dave Nova
Cadillac Technician
Associate Degree
1,522 satisfied customers
2003 cadillac CTS: rides very hard, suspension bottoms on rough roads
2003 cadillac CTS 3.2 Liter V6, rides very hard, suspension bottoms on rough roads, or when driving over manhole covers, etc. What would the fix on this?… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 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

1,090 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)

Cadillac Technician

811 satisfied customers

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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