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I have no power to my fuel pump in my 2006 jeep liberty, I've put a new pump in, checked all the fuses and relays, and put a new crank sensor In. I still don't have power to the pump

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  • Jeep Master
  • 20,706 Answers

Ouch, you dont have a $10 volt meter, ? if you dont have 12vdc to the pump cranking why replace a pump, it has no power. so.....?
which engine, we need that because its and EFI question and varies by engine. Gas or Diesel?
first off here is the dead pump checks on all EFI cars,
1: fuses are first (as is a charged battery to 12.6vdc rested)_
2: next is to scan it, scan it cranking, dont skip scans. ever. and 100x that in newer cars. it reports many failures, now. details......
3: the crank engine (yes, crank it ) and see if 12vdc makes it to the pump. does it? id bet not. (as you said no power but did you crank it?)

4: if the pump feed wire is dead now what. well check the pump drive. on old cars its a relay on newer its ELECTRONIC driven.
that means powerful transistor drive from the TIPM.
5: first is if the SKIM is glowing cranking is it? immoblizer active cuts fuel. (not sure if it cuts pump but is important this)
6: dead ASD relay, it dont close. cranking.
7: or the ASD relay drops out cranking, scan tool tells why.

me ?, I scan first, ohm the scan tells me x fuse is blown,.
wow.
or that the ASD dropped for x reasons 8 total.

does the PCD Fuel pump relay close cranking?
does the coil on said relay (meter across coil of it) go to 12vdc cranking 11v is typ.?
if not the ECU is blocking the pump relay,
that takes a scan tool to find why.
use an Innova 3160 scan tool , buy one and save a fortune guessing.
barrow, rent or buy,
cant go to shop engine is dead, right? so leaving 2 choices.
tow it or buy scan tool for less. cash.

fuse 24 looks ok but is cracked (hair line) and reads infinity on the ohm meter RX1 scale.? BINGO, we test fuse that look ok.
or check voltage on both sides of fuse cranking, 12vdc is good.
0v is bad.

The PCM has many reasons to cut the relay,
not one can be guessed at (well dead spark, sure)
it needs to be scanned.

Posted on Apr 13, 2015

6 Suggested Answers

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Posted on Jan 02, 2017

DAD5bbbbg
  • 111 Answers

SOURCE: no power to fuel pump

What you need to do is drop the fuel tank and put a new fuel pump in it. I would drain the gas and put new gas in after you get the pump changed.

Posted on Mar 26, 2009

  • 10 Answers

SOURCE: 2007 Jeep Wrangler Unlimited Crank-No Start. Replaced FP.

Hey Tim take a look at this, will this help ?
SUBJECT:
No Engine Crank Or No Engine Start Due To Electronic Lockup Of The WCM / SKREEM
OVERVIEW:
This bulletin involves the replacement of the Wireless Control Module (WCM), and if
equipped, the replacement of the Electric Steering Column Lock (ELV). The WCM is also
referred to as the Sentry Key Remote Entry Module (SKREEM).
MODELS:
2007
SYMPTOM/CONDITION:
The customer will experience a no engine crank AND a no engine start condition. Also, the
remote keyless entry (RKE) system will not operate. This condition may be due to an
electrostatic discharge (ESD) from the ignition key into the Wireless Control Module
(WCM), causing the WCM to electronically lockup. This condition may occur more
frequently in dry and/or cold weather conditions where a sufficient electrostatic charge is
more easily produced. This condition is corrected by the replacement of the WCM
DIAGNOSIS:
1. With the condition present (i.e. the vehicle in the no crank / no start condition), connect
the StarSCAN® scan tool to the vehicle.
2. Turn the ignition switch to the “ON” position, and power up the StarSCAN®.
3. If the WCM is electronically locked up, the StarSCAN® will display the WCM as being
“off bus”.
4. If the no crank / no start condition is present, and the WCM is “off bus”, then reset the
WCM by temporarily removing the IOD fuse (with the key out of the ignition switch),
wait for 10 seconds and then reinstall the IOD fuse.
5. With the IOD fuse reset having been performed, verify that the vehicle will now crank,
start, and run.
6. If the condition is temporarily corrected by performing the above steps, and if the part
number of the WCM is earlier than the part number of the WCM listed in the part
reference table in the Service Bulletin Parts Required Section below, then perform the
Repair Procedure.

Posted on Jun 24, 2009

roniecon
  • 6826 Answers

SOURCE: 94 concorde

change crank sensor? if so replace control module (ignition module)

Posted on Jul 04, 2009

  • 6982 Answers

SOURCE: I have a 93 Jeep Wrangler 4.0 that cranks and

Ok...you mentioned that there is no spark coming from the coil when it's in no start...Is there power from the alternator going to the coil?
One other item...If the timing chain is worn and stretched, it is possible that the cam sensor and crank sensor are out of phase with each other, just enough where a temperature difference will change starting ability.
One question...while in no start, have you tried changing the throttle position while cranking to see if it lights at part or 3/4 throttle?

Posted on Oct 15, 2009

  • 1 Answer

SOURCE: no spark no fuel no start! replaced and checked

funny thing is I have a 2002 GTI with the exact same problem. have spent the last three days at work trying to figure things out.. best of luckn email me if you figure anything out. Beattie411@gmail.com

Posted on Mar 19, 2010

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1 Answer

Have a 2006 jeep liberty and do power to the fuel pump what can I do to fix it


Check your fuses and relays if no power to pump.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

Mar 06, 2016 | Jeep Cars & Trucks

3 Answers

My 02 jeep liberty isn't getting power to the fuel pump as well as my fuel Gauge doesn't work with the key o. Haven't been able to get it started in week now??? What could this be???????


Did you check all the fuses? Sounds like you have no power to the fuel pump if you worked on it recently, make sure there is no ground wire unhooked. Any ground wire could cause this problem. Locate the fuel pump relay. Switch it with a known good relay.

Sep 19, 2014 | 2002 Jeep Liberty

2 Answers

Engine cranks good but will not start.


did you check all fuses with a meter ?
you are new to jeep repairs.... here are some facts.
jeeps have ASD relay.
when car dont start, see what the ASD relay is doing
do not throw parts, you picked the most hard and expensive thing to change on a lark. why do that?
the fuel pressure gauge is $20 and takes 5min to see that fuel pressure is good. not pulling the tank and pump. for fun.
why do that.? (seen 100000 times on forums, this....)
here is mr. ASD, and what to check.
the ASD can cut fuel and spark for many causes. x8

http://www.fixkick.com/Jeeps/ASD.html

automatic shut down relay.

does the relay close cranking? y/n ?
if yes, does it then drop out cranking, y/n?

those are the first 2 tests on all jeeps 1993 to now.

each check discovers what is wrong
so does attaching any OBD2 scan tool and cranking
for 5 long seconds and behold, DTC errors.
got DTC errors cranking/??

BINGO x10.

Feb 27, 2014 | 2006 Jeep Liberty

1 Answer

2006 jeep liberty isnt getting gas to engine.


If the pump kicks on, then it should be getting to the rail.
Sounds like an immobilizer issue (Not powering the injectors).
Disconnect a hose from the fuel rail inlet point (put it into a bottle or tub) and check if fuel is pumping during cranking.
If you get fuel at the rail, check immobilizer or ECU.

Feb 27, 2014 | 2006 Jeep Liberty

1 Answer

98 jeep put new crank sensor ' coil pickup' and coil ' i have no power to the fuse block on finder no fire to plugs and dont here fuel pump


No power to fuse block? This may be the problem. Check all your maxi fuses in the power distribution block. I think all the maxi fuses are hot at all times-check if they are getting power, and fuses are good.

Also in the power distribution center is fuse F15- a 30amp fuse for fuel pump relay, and fuse F6- a 15amp fuse, also for the fuel pump wiring. Check that both are good, and have power-F15 is hot at all times. F6 is hot in run or start.
This is the 4.0L inline 6, right? That is the engine diagram I have. The coil signal is from the ECU. Does the check engine light come on with key on, so you know the ECU is powered?

Dec 09, 2013 | 1998 Jeep Cherokee

1 Answer

My 2006 jeep liberty won't supply fuel


check the fuel pump,fuel filter or the fuel fuse

Oct 13, 2012 | 2006 Jeep Liberty

1 Answer

1993 Jeep chreokee Replaced fuse and relays Can not get fire to fuelpump I have checked the fuel pump it is good all new relays and fuses


You have two relays there...the fuel pump relay and the pump bypass relay. Did you check both? Also, did you check the resistor on the drivers fender back near the master cyl? Both relays are powered by the asd relay that is energized by the crank position sensor via the computer.
Also check the connections for the relays underneath the power distribution center.

May 27, 2010 | 1983 Jeep Cherokee

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2006 Cherokee KJ 2.8 CRD intermittent problem. Engine starts then stops. After priming at fuel filter will start & run ok


fuel pump relay . you should hear the fuel pump run for 5 seconds as soon as you turn the key on .after that the cranking sensor takes over when engine it turned over to start

May 26, 2010 | 2006 Jeep Liberty

1 Answer

2006 Liberty: My 2006 jeep liberty dies while driving and won't ...


Most common causes of that kind of problem are the fuel pump and the crank sensor. Crank sensor should set a code, pump won't. Less frequent but worth mentioning is the ignition switch. Do some testing using a haynes or chilton manual as a guide,. All you need for that is a digital multi-meter.
Before testing anything, check that all the ground points under the hood are clean and secure. there are more than just the battery to the block...check all the smaller ones as well.

May 05, 2010 | 2006 Jeep Liberty

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