Jeep

Have Jeep questions? Ask a Jeep repair expert for answers

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

Having problems getting the fuel pump to run/ no power back…

Having problems getting the...

Having problems getting the fuel pump to run/ no power back to the fuel pump. It’s in a 2002 Jeep Liberty

Mechanic's Assistant: Is the power loss consistent, or does it fluctuate?

No it is consistent can’t get any power at all back there

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

Yes I am fixing it my self have it in my shop and I have checked relays and fuses and traced the wires

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

I don’t think so

Show More
Show Less
Ask Your Own Jeep Question
Answered in 9 minutes by:
3/14/2018
Mark
Mark, 22 Year Factory trained technician
Category: Jeep
Satisfied Customers: 11,554
Experience: Jeep factory training........25 years in the industry.
Verified

Welcome to JA my name is Mark.

Fuse 24 in the underhood fuse box supplies power to the fuel pump relay. Have you tested for voltage at this fuse and is the fuse good. Have you tried to jump the relay?

Ask Your Own Jeep Question
Customer reply replied 1 month ago
11.7 to both sides of the fuse
Customer reply replied 1 month ago
I have switched the relay with one that worked that was the same and it didn’t do anything

Thanks for the reply. Ok, if you pull the relay out and turn it over you'll notice the pins are numbered. Pay attention to pin 30 and 87 and where they plug into the fuse box. Pin 30 needs to have battery voltage. If you connect a jumper wire from 30 to 87, that will send power directly to the pump. Can you do that and see if the pump runs?

Ask Your Own Jeep Question
Customer reply replied 1 month ago
Have 12 volts there and jumping did nothing
OK good. So now either the wire is broken between the relay and the pump or the pump is no good. My money would be on a bad fuel pump.
Ask Your Own Jeep Question
Customer reply replied 1 month ago
Well it ran until the yoke broke and it pulled the plugs a part for the fuel pump I fixed the wires and still nothing was wonder if there was like and emergency shut off or something for the pump?
Customer reply replied 1 month ago
I got it found a ground wire that was broke still

Awesome! Good Job!

Mark
Mark, 22 Year Factory trained technician
Category: Jeep
Satisfied Customers: 11,554
Experience: Jeep factory training........25 years in the industry.
Verified
Mark and 87 other Jeep Specialists are ready to help you
Ask your own question now
Was this answer helpful?
Ask Mark Your Own Question
Mark
Mark
Mark, 22 Year Factory trained technician
Category: Jeep
Satisfied Customers: 11,554
11,554 Satisfied Customers
Experience: Jeep factory training........25 years in the industry.

Mark 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

3,449 satisfied customers

Jeep Certified Master Tech

Mark

Mark

22 Year Factory trained technician

11,554 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

1,021 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Ron Z.

Ron Z.

- Jeep Tech -

629 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
My fuel pump is not engaging and i have just replaced it.
my fuel pump is not engaging and i have just replaced it. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
1991 Jeep Wrangler suspected fuel pump failure. I jumped the
1991 Jeep Wrangler suspected fuel pump failure. I jumped the fuel pump relay and I can hear the pump engaging but I am not getting fuel to the fuel rail. Fuel guage claims there is 1/4 of a tank. I ad… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
Can a fuse protected hot wire be used to run fuel pump in a
can a fuse protected hot wire be used to run fuel pump in a old jeep? … read more
Chris
Chris
Shop Foreman
3,449 satisfied customers
I got a 97 jeep cherokee 4.0 4x4. The fuel pump Astin. The
I got a 97 jeep cherokee 4.0 4x4. The fuel pump Astin … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
No spark or fuel pump. will not start after running til
no spark or fuel pump. will not start after running til warmed up> Shut off and then won't start. New crank sensor, new cam shaft sensor and rebuild ECM … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Having problems getting the fuel pump to run/ no power back
Having problems getting the fuel pump to run/ no power back to the fuel pump. It's in a 2002 Jeep Liberty … read more
Mark
Mark
22 Year Factory trained technician
11,554 satisfied customers
Fuel pump works, motor turns, sounds like no fuel to engine,
fuel pump works, motor turns, sounds like no fuel to engine, just replaced top radiator hose and replaced themostat, motor cranks, just not starting, no problem prior to busted hose … read more
Jared D
Jared D
Shop Supervisor
Bachelor\u0027s
3 satisfied customers
No power to fuel pump. New map, iac valve, crank sensors and
new map, iac valve, crank sensors and nee fuel pump. … read more
Jaybird61
Jaybird61
Master Automotive Mechanic
2,280 satisfied customers
91 cherokee 4.0 truck died while driving. fuel pump no power
91 cherokee 4.0 truck died while driving. fuel pump no power unless i jumper relay. swapped relays with asd relay, still no power to fuel pump, swapped cooling fan relay, still nothing. only time i ge… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Replaced fuel pump. not getting fuel to engine. not getting
replaced fuel pump. not getting fuel to engine. not getting 12V at the fuel pump plug when starting. Rearranged relays and fuses, still no fuel flow. 2003 TJ 4.0 L … read more
Chris
Chris
Shop Foreman
3,449 satisfied customers
No power to fuel pump, fuel pump works, no spark, will
No power to fuel pump, fuel pump works, no spark, will crank … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
2006 jeep grand Cherokee 3.7. Just changed the fuel pump,
2006 jeep grand Cherokee 3.7. Just changed the fuel pump, getting fuel to the fuel rails, but not to throttle body . Starts if I poor fuel in the throttle body … read more
Chris
Chris
Shop Foreman
3,449 satisfied customers
2003 jeep grand cherokee 4.0l. no power to fuel pump but has
Second opinion] 2003 jeep grand cherokee 4.0l . no power to fuel pump but has power to sending unit. i can not find a relay or wiring diagram on this vehicle. Can you help me?… read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
2003 jeep grand cherokee 4.0l. no power to fuel pump but has
2003 jeep grand cherokee 4.0l . no power to fuel pump but has power to sending unit. i can not find a relay or wiring diagram on this vehicle. Can you help me?… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Just replaced the fuel pump, pressure refulator, even the
Just replaced the fuel pump, pressure refulator, even the idle air control valve. Still no fuel to my rail... :( … read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
It been drivin me! I replaced fuel pump, filter, would crank
Thanks, ***** ***** drivin me nuts! I replaced fuel pump, filter, would crank immediately, run for 8-10 secs, then die...today, it cranks but no start, no spark at plugs … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
How do you bypass or check the fuel pump relay to get power
Hi Dan , How do you bypass or check the fuel pump relay to get power to the fuel pump on a 2001 WJ Jeep with the 4.0 L engine… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I've replaced fuel pump 3 times, but 2005 grand cherokee
i've replaced fuel pump 3 times, but 2005 grand cherokee fails to start . wondring if its crank shaft sensor … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,038 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