Cadillac

Cadillac repair questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

I was told I needed a new cat converter although it runs…

Customer Question
I was told I...

I was told I needed a new cat converter although it runs well. The 02 is upstream from the converter so how then is the converter bad or is it based on mileage. Check engine light is always on. This a 2001 sts

Mechanic's Assistant: Thanks. Can you give me any more details about your issue?

I failed emissions and the caddy dealer said I needed a new converter at about $1000.00 thru the dealer. How do reset and find engine codes to solve the actual problem

Submitted: 2 years ago.Category: Cadillac
Show More
Show Less
Ask Your Own Cadillac Question
Answered in 15 minutes by:
3/7/2016
Cadillac Mechanic: Ron Z., - Cadillac Tech - replied 2 years ago
Ron Z.
Ron Z., - Cadillac Tech -
Category: Cadillac
Satisfied Customers: 20,070
Experience: 18+yrs experience. State Inspector and Cadillac Diagnostics
Verified

I'm sorry the Tech you requested was unavailable to assist you today. It appears that Tech is currently "Offline". Now that his 15 minute "request lock" has expired, hopefully I can be of some assistance in his place...

Do you happen to have the "p-codes" available? If your emissions test was an OBDII type test, the p-codes should be on the inspection report, to the left of the description.

Ask Your Own Cadillac Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a cadillac mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Jerry Newton Your Own Question
Jerry Newton
Jerry Newton
Jerry Newton, Cadillac Technician
Category: Cadillac
Satisfied Customers: 1,738
1,738 Satisfied Customers
Experience: ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.

Jerry Newton is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

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.

< Previous | Next >

Related Cadillac Questions
I have a 2008 Cadilac STS with a 3.6 with 104,000 miles. I
I have a 2008 Cadilac STS with a 3.6 with 104,000 miles. I am getting consistent codes of P0300 P0302 P0304 P0306. (all bank 2). I also occasionally get P0019 and P0089 but not all the time. I also ha… read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
102 satisfied customers
2006 cadilac sts v6 6.3 I have a diagnostic code P0420 P0430
2006 cadilac sts v6 6.3 I have a diagnostic code P0420 P0430 I haave been told that I must replace both catalytic converters. I don't believe it… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Cadillac Deville: I changed the converter and all three 02
I changed the converter and all three 02 sensors after a year engine light came back on with code # ***** I talked to one guy he told me maybe my computer is not reading the upstream sensor, what can … read more
roy
roy
Associate Degree
3 satisfied customers
Cadillac: Cadillac or oldsmobile question, this question
Cadillac or oldsmobile question, this question is worth a min of $30, for a dealer employed gm tech , in my shop I have a 2005 caddy sts with SMS Text Alerts oldsmobile , Cadillac help this Cadillac \… read more
JContin
JContin
Master's Degree
125 satisfied customers
Cadillac Deville: I have what I was told is a new catalytic
I have what I was told is a new catalytic converter on a 2005 Cadillac Deville. Soon after the "check engine soon" light came on. I was told the 02 sensor needed replacing. Soon after replacing the 02… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
cadillac sedan de ville: 1992 Caddy Sedan de Ville, 4.9L V8 Failed
1992 Caddy Sedan de Ville, 4.9L V8 Failed VA emissions inspect for NO. All other emissions okay. Local Caddy dealer replaced frozen shut EGR valve & cleaned tubes. Failed retest with even higher NO th… read more
proautotech
proautotech
Shop Foreman
1,144 satisfied customers
2003 cadillac deville: a PO420..below threshold..converter..02 sensor
I also have a 2003 cadillac deville with a PO420 codethat says catalyst system efficency below threshold bank 1. Does this mean I need to replace the converter? I had a code for the 02 sensor so I rep… read more
Robert R
Robert R
Auto Technician
Vocational, Technical or Trade Scho
879 satisfied customers
2005 STS: experienced transmition shudder during normal accel..shift
I have a 2005 STS with 47,000 miles. Since 30,000 miles I have experienced transmition shudder" during normal accel. and the shift points are not always at the correct time. I am looking for a tech bu… read more
David H
David H
Vocational, Technical or Trade Scho
2,413 satisfied customers
cts: caddy..on...six hour trip on the highway..light came back
I have a 2005 caddy cts. I had a problem with the engine light staying on.I replaced a small fuel sensor above the rear axle. it solved the prob for a six hour trip on the highway.the next day while d… read more
Vladgmru
Vladgmru
Automotive Electrician
Vocational, Technical or Trade Scho
1,586 satisfied customers
2006 sts: feeling vibration and rough shifts..torque converter was bad
I took my 2006 sts to the dealer because I was feeling vibration and rough shifts in the drivetrain and they told me the torque converter was bad. So I called a couple of other shops for quotes to com… read more
John
John
ASE Certified Technician
2 YEARS COLLEGE
941 satisfied customers
99 sts: dies..slowing down..Ignition module..fuel pressure test
I have a 99 sts ....it dies....after slowing down.....going thru drive thrus....at red lights and at stop signs.......not always but about a third of the time. I have replaced the cat. converter.....t… read more
Gm Tech (Cam)
Gm Tech (Cam)
Cadillac Mechanic
Vocational, Technical or Trade Scho
1,090 satisfied customers
94 sts: with the 4.6 northstar in it..o2 code..smog
I have a 94 sts with the 4.6 northstar in it. the o2 code is showing po44(lean). I tried to smog it but it showed high hydrocarb and co. I replaced the plugs, idle control sen., cat., changed oil and … read more
Dave Nova
Dave Nova
Cadillac Technician
Associate Degree
1,522 satisfied customers
Tracer: o2 sensor..Converter and my mileage increased instantly..mpg
Thanks, Tracer! At your suggestion I replaced the O2 sensor before the Cat. Converter and my mileage increased instantly from 15.8 to 19 - 20 mpg, and error mesg. 104 stopped appearing! But now, only … read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
Caddy..rough..the chain has not jumped time and gave it a tuneup
my 1984 caddy coupedeville with a 4.1 engine is running extremly rough. i have insured that the chain has not jumped time and gave it a tuneup. the oil dipstick smells of gas as well as the oil cap. w… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
I recently acquired a nearly pristine 96 Cadillac Seville
I recently acquired a nearly pristine '96 Cadillac Seville STS, with 74300 mi. Recently I have started getting an intermittent engine code "140, Emissions Control" system, and the car has stalled a fe… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
Hi, I have a 2002 Cadillac STS with the Navigation radio.
Hi, I have a 2002 Cadillac STS with the Navigation radio. The radio was working fine, including the navigation system. Then I jump started the car and the navigation system said, "insert dvd" [I don't… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 satisfied customers
2001 cadillac seville sts: service engine light..my torque converter
I have a 2001 cadillac seville sts, the service engine light is on I was told it was my torque converter. I'am trying to find out how much it is going to cost to get repaired, or do I need to get a ne… read more
BigBob
BigBob
Service Manager
High School or GED
2,846 satisfied customers
2001 STS: my cat convertor is bad, with the history..oil or water leak
my cat convertor is bad, with the history of this motor what are the possibiliies its from oil or water leak from head. 2001 STS with 75000 miles yes only75,000… read more
goodwrench9124
goodwrench9124
Lead Tech/ Shop Leader
Vocational, Technical or Trade Scho
2,571 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x