Jeep

Have Jeep questions? Ask a Jeep repair expert for answers

Ask an Expert,
Get an Answer ASAP!

Jeep wrangler: i have a 1999 jeep wrangler with a 4.0 motor.

Customer Question
i have a 1999 jeep...
i have a 1999 jeep wrangler with a 4.0 motor. it had an exhaust leak so i pulled the intake and exhaust manifold off and replaced the gasket and the donut gasket for the exhaust pipe. when i was putting the pipe back on i broke the oxygen sensor so i replace it as well. now when you try to start the engine it revs to the point that you cant stop it, like 6,ooo rpm. i thought it had a vacume leak so i replaced the exhaust, intake gasket again making sure to tighten the bolt in torque sequence. still rev up to 6,000 on startup. help me please.
Submitted: 3 years ago.Category: Jeep
Show More
Show Less
Ask Your Own Jeep Question
Answered in 18 minutes by:
6/20/2015
Jeep Mechanic: Eric, Automotive Repair Shop Manager replied 3 years ago
Eric
Eric, Automotive Repair Shop Manager
Category: Jeep
Satisfied Customers: 34,631
Experience: 20+ yrs. experience as repair shop manager and technician.
Verified
HI,
Most common cause of this after this type of repair is either accelerator cable binding, throttle body throat plate actuator binding or the throttle body throat plate stuck wide open and not able to close
You need to carefully go thru each of these to find where the bindage is and correct.
Ask Your Own Jeep Question
Customer reply replied 3 years ago
none of the solutions helped. nothing stuck in the throttle body, no binding of the cables. answers didn't help.
Customer reply replied 3 years ago
the answers didn't help.
Jeep Mechanic: sprinkles08, ASE Certified Technician replied 3 years ago
sprinkles08
sprinkles08, ASE Certified Technician
Category: Jeep
Satisfied Customers: 23,983
Experience: Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist
Verified
Hello and welcome to JustAnswer!
If the throttle blade is closed then you have a vacuum leak. It could be a hose that was left off or damaged but it takes a larger leak than even the brake booster hose to cause engine speed to go that high.
What is happening is the intake is catching on the dowel pins on the bottom side when you're tightening it. This leaves a gap on the bottom and the bolts may feel normal when you're tightening it, but the bottom of the intake isn't touching the gasket and that's where the vacuum leak is. Loosen the intake bolts and push the bottom of the intake to the head. The lower bolts will need to be tightened by hand while the intake is held against the head. Then the upper bolts can be tightened by hand, and then you can go around and torque them.
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 sprinkles08 Your Own Question
sprinkles08
sprinkles08
sprinkles08, ASE Certified Technician
Category: Jeep
Satisfied Customers: 23,983
23,983 Satisfied Customers
Experience: Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist

sprinkles08 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
Check engine light and DTC code P1776 with a Fault # 76.
Check engine light and DTC code P1776 with a Fault # 76 … read more
Eric
Eric
Automotive Repair Shop Manager
34,631 satisfied customers
GREAT, I just got a 2012 patriot that I am told is a
GREAT, I just got a 2012 patriot that I am told is a latitude, but have no idea how to know the difference, along with a bunch of other questions I should have asked pre purchase. Any advice would be … read more
Chris
Chris
Shop Foreman
3,578 satisfied customers
My soft top was off in rain storm now my radio screen is a
my soft top was off in rain storm now my radio screen is a blur … read more
Andrew Martin
Andrew Martin
Level A Technician
Technical Certificate
407 satisfied customers
Can't turn key to run position. Can't turn steering wheel.
No, can't turn steering wheel. Don't believe key is worn … read more
Andrew Martin
Andrew Martin
Level A Technician
Technical Certificate
407 satisfied customers
Jeep grand cherooke 2015 i need tech working in dealer Dodge
Jeep grand cherooke 2015 i need tech working in dealer Dodge the probleme is cluster the mileage is blinking alwas… read more
Chris
Chris
Shop Foreman
3,578 satisfied customers
I have a 2001 Jeep Cherokee 4.0l, the oil was over filled by
I have a 2001 Jeep Cherokee 4.0l, the oil was over filled by a couple of quarts and ran for about 3 weeks and then died will run on starting fluid but won't start by its self, can hear the fuel pump t… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I'm trying to replace the heater core on a 2012 jeep
hello, i'm trying to replace the heater core on a 2012 jeep liberty.I have the dash unbolted and it is stuck on the drivers side for some reason.can you tell me what is holding it in place?… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
Have a 83 cj7 straight 6 with a Howell tab. Be going down
Hi there. Have a 83 cj7 straight 6 with a Howell tab. Be going down the road and Jeep will just flat die. Like someone turned key off. Have had this issue for a long time. Been told. Maybe cam or cran… read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
Replaced evaporator core requiring removal of dash. Removed
Hello again. Replaced evaporator core requiring removal of dash. Removed aftermarket remote Start module. Reassembly fine with all electrical connections made. Now no response when key turned to start… read more
Mechanic01
Mechanic01
2,806 satisfied customers
Error codes p0123, p0643, p0653, p02122, p2127, p0642,
Error codes p0123, p0643, p0653, p02122, p2127, p0642, p0222, and p0652 all recorded, all permanent … read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
I have a 2006 Jeep Grand Cherokee and when i turn on my A/C
I have a 2006 Jeep Grand Cherokee and when i turn on my A/C or Heat no air comes out? … read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
10,498 satisfied customers
Well at 11. At 1st it was. Shutting off n running ruff so
At 1st it was. Shutting off n running ruff so igot a throttle body now kt … read more
sprinkles08
sprinkles08
ASE Certified Technician
23,983 satisfied customers
My traction control light and engine light keep coming on no
Good Morning ...my traction control light and engine light keep coming on no matter what I change. I have changed my cam phrases, cam sensors and even changed my front wheel bearings. and these two li… read more
Richard Greer
Richard Greer
Vocational, Technical or Trade School
63 satisfied customers
I have a 2014 Jeep Grand Cherokee SRT and the display
I have a 2014 Jeep Grand Cherokee SRT and the display indicate the front parking sensors need service. How can I service them or reset them?… read more
Mark
Mark
22 Year Factory trained technician
Vocational, Technical or Trade Scho
2,649 satisfied customers
Turn signals and four ways not working. checked fuses,seem
turn signals and four ways not working. checked fuses,seem to be ok.other lighys are ok. ????????????? … read more
Mechanic01
Mechanic01
2,806 satisfied customers
I put a new switch and lock in key thing and when I try to
I put a new switch and lock in key thing and when I try to start it nothing happens,it don't click it don't do nothing but bring dash lights on,I replaced relays and still don't work,no bleed fuses or… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
My check engine light has been for about two weeks now and
My check engine light has been for about two weeks now and after I run my Jeep for 15-20 minutes I start getting the smell of something burning under my hood and soon after some smoke comes from my en… read more
indy-tech
indy-tech
Shop owner, technician
Vocational, Technical or Trade Scho
11 satisfied customers
Kalamykid. We corresponded earlier this year regarding my
Good eveningCustomer We corresponded earlier this year regarding my 2001 pontiac aztek that would crank but not start. This was back in January. We have recently started working on it again. The weath… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 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