Jeep

Have Jeep questions? Ask a Jeep repair expert for answers

Ask an Expert,
Get an Answer ASAP!

Check engine light is perpetually on for years due to o2…

Customer Question
Check engine light is...

Check engine light is perpetually on for years due to o2 sensors needing replacing. I don't want to\he expense of changing them out. Today it flashed for the first time when it was cold. Codes read cylinder 3 misfire, but it stops flashing when warm. It needs a tune up, but the question is should I drive it at all.

Mechanic's Assistant: Does the light stay on, or does it blink?

I let it stay it stay on for the o2 sensors because I don't want to replace them, but it flashed on and off for 5 minutes today when cold.

Mechanic's Assistant: What is the model/year of your Jeep?

2006 wrangler

Mechanic's Assistant: Are you fixing your Wrangler yourself? What have you tried so far?

No, never

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No, thanks

Submitted: 7 months ago.Category: Jeep
Show More
Show Less
Ask Your Own Jeep Question
Answered in 6 minutes by:
12/22/2017
Jeep Mechanic: George H., ASE Certified Technician replied 7 months ago
George H.
George H., ASE Certified Technician
Category: Jeep
Satisfied Customers: 19,283
Experience: ASE Master Tech 15+ years
Verified

Hello I will help,

It will get progressively worse unless you fix the problems til the engine will not run at all. It just gets more expensive the longer you wait. The flashing means a catalyst damaging misfire so your catalytic converters are being damaged.

Please let me know what I can do to help you with your questions

Thanks

Ask Your Own Jeep Question
Jeep Mechanic: George H., ASE Certified Technician replied 7 months ago

Kevin, are you still with me? How can I help?

Ask Your Own Jeep Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a jeep mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask George H. Your Own Question
George H.
George H.
George H., ASE Certified Technician
Category: Jeep
Satisfied Customers: 19,283
19,283 Satisfied Customers
Experience: ASE Master Tech 15+ years

George H. 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:

Thank you so much for your answer. My initial estimate was $325; I got it done for $100 - part and labor.

Lynn B.Ormond Beach, FL

I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat.

StanSayre, PA

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

< Previous | Next >

Meet the Experts:

Chris

Chris

Shop Foreman

3,578 satisfied customers

Jeep Certified Master Tech

Mark

Mark

22 Year Factory trained technician

2,649 satisfied customers

Jeep factory training........25 years in the industry.

Dave

Dave

Jeep Master Tech

1,149 satisfied customers

Chrysler Triple Master, ASE master Tech AA degree in Auto.

moparfl

moparfl

ASE Certified Technician

1,130 satisfied customers

ASE Master Tech Chrysler Dodge Jeep Master Tech

Tim Mohr

Tim Mohr

ASE MASTER TECH

1,052 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Ron Z.

Ron Z.

- Jeep Tech -

641 satisfied customers

18+yrs experience. State Inspector & Jeep Diagnostics/Repair

jeepmopar76

jeepmopar76

Jeep/Chrysler Triple Master Tech

579 satisfied customers

32yr ASE Master Tech, 9yr Chrysler Master Tech, 19 yr Jeep Dealership service including AMC/Eagle

< Previous | Next >

Related Jeep Questions
2001 cherokee sport starts great, as soon as it gets hot
2001 cherokee sport starts great, as soon as it gets hot starts to miss them dies. Starts right back up. Actron code scanner live data I'm losing all readings from o2 sensors everything goes to zero. … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,442 satisfied customers
Bad misfire. Code showed bank 2 sensor 2 so I changed
Bad misfire. Code showed bank 2 sensor 2 so I changed it...no result. Replaced the plugs and coil rail, no change. Code showed misfire on 2 cylinders, but I don't remember which 2. 2003 Wrangler 4.0. … read more
rpmdiag
rpmdiag
High school
7,774 satisfied customers
2009 2 door sahara engin light is on and intermitenly I will
2009 2 door sahara engin light is on and intermitenly I will get a tone and the engin light will flash, rpm's drop, and engin runs rough. I then get another tone and the engin runs smooth but light st… read more
-Brad-
-Brad-
Foreman Dodge Dealership
Vocational, Technical or Trade Scho
8,129 satisfied customers
Noticed the past few days there is a lot of shaking when I
Noticed the past few days there is a lot of shaking when I start my jeep which stops once I start driving. This morning Check Engine Light came on flashing. … read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
19,176 satisfied customers
I have a 2007 Jeep Wrangler and as my hubby was coming home
Hi. I have a 2007 Jeep Wrangler and as my hubby was coming home today the check engine light popped on and started flashing. The Jeep was having troubles going into the next gear … read more
-Brad-
-Brad-
Foreman Dodge Dealership
Vocational, Technical or Trade Scho
8,129 satisfied customers
2006 jeep wrangler unlimited I6 All four O2 sensors are
2006 jeep wrangler unlimited I6 All four O2 sensors are coding the heating elelment. replaced all 4 sensors and still getting code. Also seat belt slight stays on, I unplugged the wire underneath seat… read more
bill
bill
chrysler dodge jeep tech
Vocational, Technical or Trade Scho
1,685 satisfied customers
Ive having an odd issue with my 2008 Jeep Liberty 6 speed
I've having an odd issue with my 2008 Jeep Liberty 6 speed (manual) that is difficult to describe. The engine appears to run great. It has about 98,000 miles. Occasionally, especially at slower speeds… read more
Dave
Dave
Jeep Master Tech
Associate Degree
1,149 satisfied customers
2006 jeep wrangler unlimited: automatic..catalytic converter..shifts
I have a 2006 jeep wrangler unlimited with an automatic with approx 55k miles. The catalytic converter was replaced a few months ago and ever since then if I don't let the car warm up for at least 5 m… read more
ZZDaryl
ZZDaryl
Lead Auto Tech
Some college and advanced training
11,465 satisfied customers
91 Jeep Wrangler: smog; NOx too high, especially at 25MPH...smog check
My 91 Jeep Wrangler flunks smog; NOx too high, especially at 25MPH. I've installed a new cat and it still flunks. All other smog check gases pass. Could it be my O2 sensor (which is 65k old)… read more
Mr. T
Mr. T
Mechanic
Vocational, Technical or Trade Scho
144 satisfied customers
Engine submersed in water ! I have a 96 cherokee, 4.0, 5 speed.
Engine submersed in water ! I have a 96 cherokee, 4.0, 5 speed. I recently took it to a 4x4 event and ended up with it in deep water, which hydr-locked the engine. After getting all the water out and … read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
19,176 satisfied customers
1992 wrangler: running rich..gas mileage..never stalled..misfire
Hello, I have a 1992 wrangler 2.5 that is running rich and getting horrible gas mileage. The idle does fluctuate up to 1100 -1500 rpms at times. It has never stalled or seemed to misfire. I have repla… read more
brownjeff
brownjeff
Associate Degree
13,873 satisfied customers
Jeep Wrangler Unlimited Sahara I have a 2008 Jeep Wrangler
I have a 2008 Jeep Wrangler with 24000 miles and 3.8 v6. I keep getting dtc p0300, random misfire detected multiple cylinders and I don't know what to do. I've replaced plugs, wires, coil pack but no … read more
brownjeff
brownjeff
Associate Degree
13,873 satisfied customers
wrangler: check engine light..running fine..trouble starting..degrees
Hello, I have a 04 wrangler with a 4.0. has had a check engine light on for some time, but my son thought it was running fine. Now it has trouble starting in the cold weather {20 degrees} the last tim… read more
brownjeff
brownjeff
Associate Degree
13,873 satisfied customers
2006 jeep: hemi..cold start the car shakes and misfires..car runs
My 2006 Jeep hemi overlander has 54000 miles on it. Upon a cold start the car shakes and misfires and the check engine light is on. after a few minutes and repeated starting,the car runs as good as ne… read more
Richard
Richard
Shop foreman/Lead technician
Vocational, Technical or Trade Scho
4,140 satisfied customers
2 oxygen sensors..My mechanic..Drove it for about 6 months..hesitates
I changed 2 oxygen sensors a while back. My mechanic could not get the engine light to go out. Drove it for about 6 months and now when i start it for the first couple of minutes it won't take the gas… read more
Dave
Dave
Jeep Master Tech
Associate Degree
1,149 satisfied customers
Jeep Wrangler Sport: cylinder..sluggish when accelerating
Good Morning, I have a Jeep Wrangler Sport--6 cylinder. A few months ago, I asked an online mechanic about the Jeep being "sluggish" when accelerating. Well, it stopped and I didn,t do anything to it.… read more
jeepmopar76
jeepmopar76
Jeep/Chrysler Triple Master Tech
Vocational, Technical or Trade Sc
579 satisfied customers
I have a 2004 Jeep liberty 2.7L and Malfunction Indicator Light
I have a 2004 Jeep liberty 2.7L and Malfunction Indicator Light has come on for little things like gas tank cap however recently it has come on and it feels like it is hesistation when I push the gas.… read more
sprinkles08
sprinkles08
Technician
High School or GED
17,759 satisfied customers
98 Jeep Wrangler: cyl..tune..Local Auto Parts store..fix problem
98 Jeep Wrangler 4 cyl. Scan code P1289 - Manifold tune valve - explanation - wide open throttle condition - manifold ctl valve not in command state. Local Auto Parts store unable to give me part #/de… read more
dually2
dually2
Master Mopar Technition
Vocational, Technical or Trade Scho
298 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