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I have a 1995 Cadillac concours with the 4.6 northstar
I have a 1995 Cadillac concours with the 4.6 northstar engine.code po93 and To73 are current with traction disabled message!… read more
Ron
Ron
Automotive Tech
Vocational, Technical or Trade Scho
38,746 satisfied customers
I have 98 n.star eng 4.6 after running for 15--20 min the
I have 98 n.star eng 4.6 after running for 15--20 min the overflow cont. overflows with hot boiling water(ther. removed) Do you think I have a blockage , head gasket or circulation problem. Water in t… read more
Jerry Newton
Jerry Newton
Cadillac Technician
Vocational, Technical or Trade Scho
1,738 satisfied customers
Cadillac Seville SLS: i got a 4.6 northstar crate motor with
i got a 4.6 northstar crate motor with 1,000 miles on it. a cadillac tech put it in, couldnt learn the crank signal, tech support recommended he shim the sensor and it did learn, however the vehicle c… read more
Chris (aka- Moose)
Chris (aka- Moose)
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Vocational, Technical or Trade School
811 satisfied customers
I recently bought a 1996 Deville with 84,000 miles. The dealer
I recently bought a 1996 Deville with 84,000 miles. The dealer recommended that I add GM's Cooling System Tabs PN#(NNN) NNN-NNNN Are they necessary? I've also seen a product called Dura-Seal. It cost … read more
Jerry Newton
Jerry Newton
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Vocational, Technical or Trade Scho
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94 cadillac deville: northstar engine wont start..started right
my 94 cadillac deville concours with a northstar engine won't start. its the 2nd time in about a week to do this. last time i was able to replace the battery and started right up so thought nothing of… read more
Tim Mohr
Tim Mohr
SHOP OWNER
Master's Degree
17,221 satisfied customers
1994 Cadillac Concours: litre..neutral..car back..run a bit and fail
Hello, My 1994 Cadillac Concours with the 4.6 litre Northstar engine stalls when decelerating after driving at highway speed for a while. This has happened often on off-ramps and also on regular city … read more
Randall C
Randall C
Auto Technician / Consultant
Vocational, Technical or Trade Scho
13,097 satisfied customers
1994 cadillac eldorado: 4.6 V8 Northstar engine..1996 cadillac..spark
i put 4.6 V8 Northstar engine from 1996 cadillac Elarado to 1994 Cadillac elarado and have no start, checked everyting have no spark any advise… read more
David H
David H
Vocational, Technical or Trade Scho
2,678 satisfied customers
Kick..accelerator..smoke..the plastic firewall is melting
what causes the northstar engine to race to about 30 mph in idle and i cant slow it down unless i turn the engine off or i kick the accelerator cable a couple of times but it will race on its own agai… read more
David H
David H
Vocational, Technical or Trade Scho
2,678 satisfied customers
1993 Cadillac Seville STS: obvious horsepower diffrences..smooth
I drive a 1993 Cadillac Seville STS with a 4.6 L37 Northstar Engine... It has given me extreme problems to say the least... My question(s) are: (1) What are the true differences between the 4.6 Norths… read more
Ivan
Ivan
Automotive Instructor
Bachelor's Degree
4,857 satisfied customers
97 Cadillac deville: my parking lights..checked fuses..relays
I have a 97 Cadillac deville, my parking lights are out just on the left side, I already checked fuses and relays on the fuse boxes and replaced all light bulbs and the headlight switch, what could be… read more
Kevin Bourcier
Kevin Bourcier
Vocational, Technical or Trade Scho
385 satisfied customers
94 cadillac concours: wont start..relays..hood..top under the intake
hello i have a 94 cadillac concours, i just recently replaced the starter because it wouldnt start, and now it still wont start, all i hear is relays clicking under the hood. the starter is on top und… read more
JHoop
JHoop
Owner,Technician
High School or GED
5,425 satisfied customers
i replaced the head gaskets on a 99 cadillac sts 4.6 northstar
i replaced the head gaskets on a 99 cadillac sts 4.6 northstar and need to reset the timing but the manual wont tell me how to line it up… read more
carguyjosh
carguyjosh
Associate Degree
2,164 satisfied customers
1994 Cadillac Concours: quart every 200 miles..My mechanic advises
My 1994 Cadillac Concours Northstar engine likes to leak oil, about a quart every 200 miles. My mechanic advises that every old Northstar engine he has seen leaks a lot of oil. Any advice for the fix?… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
19,084 satisfied customers
1994 cadillac concours: my transmission fluid located..northstar
were is my transmission fluid located on a 1994 cadillac concours. i need to check it.i have northstar engine… read more
David H
David H
Vocational, Technical or Trade Scho
2,678 satisfied customers
99 cadillac deville concours 4.6 V8 northstar engine running
99 cadillac deville concours 4.6 V8 northstar engine running hot water comming out of over flow line engine has 110900 mi. can go about 4 miles before getting hot. also engine is sluggish on take off … read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
11,778 satisfied customers
my car stalls when i come to a stop or drive slow most of the
my car stalls when i come to a stop or drive slow most of the time. i changed plugs, coil packs, fuel filter, fuel relay switch, and map sensor. whats wrong? thanks. Ryan… read more
Scott
Scott
Manager/Technician
Associate Degree
1,618 satisfied customers
1995 Cadillac Deville: pass service ride control lite..Northstar
By-pass "service ride control lite" on 1995 Cadillac Deville Concours, 4.6 Northstar engine.… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
19,084 satisfied customers
1999 Cadillac Concours: The service engine light was..test drove
I purchased a 1999 Cadillac Concours from a local Cadillac dealer for 9,400.00 out the door. The "service engine light" was on when I test drove it. I asked the salesman to find out why the light was … read more
DriverDave
DriverDave
Smog Technician
40 college units completed with 4.0
66 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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