Jeep

Have Jeep questions? Ask a Jeep repair expert for answers

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

Went out and started my Jeep Liberty, to warm it up, and it…

Went out and started...

Went out and started my Jeep Liberty, to warm it up, and it started fine. But when I came it there is a loud internittent tap under the intake. The check engine light also came on. I shut it off. Not sure what to do now.

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

Stays on.

Mechanic's Assistant: What year is your Liberty?

2005 3.7 L

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

If I can. I haven't tried anything yet. Except finding out where the noise was. If you look closely you can visibly see the intake jump when the tap occurs.

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

Not that I can think of. I have tried a bit of research on line, and the lash adjuster, rocker arm issue keeps popping up. But, the noise I am hearing doesn't seem to be the same as mine.

Show More
Show Less
Ask Your Own Jeep Question
Answered in 2 minutes by:
1/20/2018
Ron
Ron, ASE Certified Technician
Category: Jeep
Satisfied Customers: 38,841
Experience: 34 year working in the automotive field as a Tech.
Verified

Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.

Ask Your Own Jeep Question

The 3.7 has known problems with rocker arms coming loose and that may very well be what you have going on here. What you need to do first is scan the computer to see what the fault code is that set when the light came on. Can you get this done and post back with it?

Ask Your Own Jeep Question
Customer reply replied 7 months ago
I don't have a scanner, and the nearest AutoZone is 15 miles away and I am very concerned about driving it.
Customer reply replied 7 months ago
Could the tap I hear be a backfire?
Customer reply replied 7 months ago
I have a video if that will help?

I would not drive it with this noise as it could cause further damage. Unfortunately, in order to get some idea where to start, we need to know the fault code. If in fact, a rocker has come off then yes it's very likely a backfire your hearing. Post a link to your video and Ill have a look at it for you.

Ask Your Own Jeep Question
Customer reply replied 7 months ago
I am trying to create a link for the video.

Okay , Im here when you ready. You can load it to YouTube and send me the link.

Ask Your Own Jeep Question
Customer reply replied 7 months ago
https://youtu.be/NKUWc-CiqFs

Okay, I got it, after viewing the video this sure does sound like you have a rocker arm off and it is backfiring as well. If you can run a scan it would tell you which cylinder is misfiring so you would know which valve cover to remove. Without a scan, the other thing you could do to isolate the cylinder would be to unplug one coil at a time looking for no change in the engine RPM and that would be the cylinder dropping out on you. Once you know which side of the engine is missing then pull that valve cover and inspect the spring, I suspect you have one broken and that will cause the rocker to pop off. Because it backfiring through the intake it very likely its going to be an intake valve spring as well.

Ron
Ron, ASE Certified Technician
Category: Jeep
Satisfied Customers: 38,841
Experience: 34 year working in the automotive field as a Tech.
Verified
Ron and 87 other Jeep Specialists are ready to help you
Ask your own question now
Customer reply replied 7 months ago
Thank you. Your input was very helpful.
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 Ron Your Own Question
Ron
Ron
Ron, ASE Certified Technician
Category: Jeep
Satisfied Customers: 38,841
38,841 Satisfied Customers
Experience: 34 year working in the automotive field as a Tech.

Ron 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
I have a jeep liberty 2002 and have a tapping nois that
I have a jeep liberty 2002 and have a tapping nois that sounds high in the engine the oil does not look that bad and was wondering what typically goes wrong with the engine? … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
38,841 satisfied customers
I have a 2007 Jeep Liberty that is having engine issues. I
I have a 2007 Jeep Liberty that is having engine issues. I turned it on yesterday and heard a clunk. I tried it three more times with the same sound. Figured it was non-drivable at that point. Have he… read more
Kevin
Kevin
workshop foreman /master tech/mot tester
1 satisfied customers
TRAIL RATED: 80 JEEP LIBERTY WITH 200000K 3.7L YESTERDAYS
08 JEEP LIBERTY WITH 200,000 K 3.7 L YESTERDAYS COLD START OF -25 deg> TEMP CAUSED A ENG KNOCK SEEMS AT TOP END. CONSTANT AT START UP, NOW TEMP IS WARMER THE SNAPPING SOUND IS INTERMITTENT. HAS ROU… read more
Chris
Chris
Shop Foreman
3,578 satisfied customers
Liberty: Rough on first start up, tapping and rattle. But
Rough on first start up, tapping and rattle. But after it is warmed up its pretty smooth. Been doing this for some time now. Kinda feels like it not getting oil up to the top of motor when I first sta… read more
Chris
Chris
Shop Foreman
3,578 satisfied customers
2004 Jeep Liberty 3.7 engine, less than 50,000 miles on Liberty. Engine has a noise like
2004 Jeep Liberty 3.7 engine, less than 50,000 miles on Liberty. Engine has a noise like tappets are bad however Jeep people up in MI. U.P. WI say it's a problem with this series of engine and ignore … read more
Clayso
Clayso
Shop Owner Master Technician
ASE Master Certified Automobile Technician
879 satisfied customers
Liberty: I have a 2002 jeep liberty with a 3.7 and I had a
I have a 2002 jeep liberty with a 3.7 and I had a rocker arm pop off so I put it back on and I still have no compression and now I'm lost. How would I fix my problem and how long will it last… read more
bill
bill
chrysler dodge jeep tech
Vocational, Technical or Trade Scho
458 satisfied customers
Liberty: Have a 2005 Jeep Liberty with a 3.7. Vehicle only
Have a 2005 Jeep Liberty with a 3.7. Vehicle only has 42000 miles and it developed a "ticking" noise when warm although it varies in frequency and volume. Have been told I need a timing chain, but fin… read more
ND-TECH
ND-TECH
Chrysler/Jeep/Dodge specialist tech
Vocational, Technical or Trade Scho
955 satisfied customers
liberty: Why does my 2004 jeep liberty make a loud tapping
Why does my 2004 jeep liberty make a loud tapping noise. Like a knock with only 86,000 miles on it. It sounds like e vine knock like tapping lifter. Not sure if they are hydraulic lifters or what... I… read more
bill
bill
chrysler dodge jeep tech
Vocational, Technical or Trade Scho
458 satisfied customers
jeep liberty 4x4: 06 jeep liberty 3.7 L misfire on #1 cylinder
06 jeep liberty 3.7 L misfire on #1 cylinder & loud ticking coming from the same cyl, could i be a broken valve spring… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
2003 Jeep liberty: 3.7 V-6..accelerate..stalled..few minutes
Hello....I am the owner of a 2003 Jeep Liberty 3.7 V-6. About two weeks ago I left for work, and once on the highway noticed that when trying to accelerate, the engine almost stalled. I pulled off the… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
2007 grand cherokee: overheated..driven..the check engine light came
I have an 2007 grand cherokee that overheated and was driven approximately 4 miles to get home. It made a popping noise and the check engine light came on along the way. At that point water was put in… read more
brownjeff
brownjeff
Associate Degree
13,873 satisfied customers
Jeep Liberty Have a 2003 Jeep Liberty with 3.7 L engine.
Have a 2003 Jeep Liberty with 3.7 L engine. Suddenly the engine started to knock, check engine light came on, and loss of power. Oil was changed 800 miles previous to the problem and jeep driven from … read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
133,000 mi..tapping noise..number 8 cyl, is their any engine additive
i have a gc 47 engine with a 133,000 mi i'm experiencing a valve tapping noise in number 8 cyl, is their any engine additive that will solve that… read more
Chris
Chris
Shop Foreman
3,578 satisfied customers
2006 jeep liberty sport: clicking..the hood I..oil change..synthetic
I have a 2006 jeep liberty sport and all of a sudden its making clicking noises and every five secounds a big clung noise that can be felt through the accelorator when im driving also there is a flash… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
2007 Jeep Liberty: Misfiring..rough idle..p300 and P0303).Has gotten
2007 Jeep Liberty Misfiring: Started yesterday with rough idle and P0303. Cleared the P0303. Progressed to considerable misfiring on the road today (P0300 and P0303). Has gotten worse quickly. Everyth… read more
ND-TECH
ND-TECH
Chrysler/Jeep/Dodge specialist tech
Vocational, Technical or Trade Scho
955 satisfied customers
Jeep Liberty 2002 engine make loud noise when cold
Hi, I have a Jeep Liberty 2002 with v6 3,7 liters. When it is cold, the engine make loud noise like "tic-tic-tic" and the noise increase with teh throtle. This noise is less when the engine is hot. Wh… read more
brownjeff
brownjeff
Associate Degree
13,873 satisfied customers
I have a 2003 Jeep Liberty 3.7L. About 4 days ago it was about
I have a 2003 Jeep Liberty 3.7L with less than 70,000 miles. About 4 days ago it was about 10 degrees, the coldest day of then season down here, my wife went out to crank it to warm it up. It cranked … read more
Instructor JP
Instructor JP
technical instructor
Associate Degree
165 satisfied customers
2004 Jeep liberty: cyl 1..compression..cylinder the intake valve leaks
2004 Jeep Liberty 3.7 ,0301 code, miss on cyl 1, compression 30lbs, no obvious broken valve spring both hard to compress, tried bg intake service 2x with Seafoam, With the rocker arm in place and 100p… read more
Glenn
Glenn
Technician/Trainer
Vocational, Technical or Trade Scho
392 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