Question about 2004 Chrysler Pacifica

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We bought a 2004 Chrysler Pacifica, it has 65,000 miles. A couple of months after we got it, the fuel gauge started acting up. When it hit 1/2 tank it would go down to empty then go back up, fuel was hard to add and the check engine light came on. We took it to the dealership they replaced the fuel pump, a week later it did it again. Needless to say 2 months later and now 3 fuel pumps later!! It did it again, this last time it was Ok for 2 weeks with the new pump but then it happened again. I am so frustrated, any help would be appreciated!!! Could they all be faulty or is something else wrong. I am getting tired of this. I have 3 kids and the car has stalled (even though their was gas in it) I don't know what to do at this point! Thank you

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Same problem! This happens in the majority of these cars. There is a recall # F44 I believe. Unfortunately mine had already been recalled for this before I owned it. The dealership tells me that it needs both fuel pump modules replaced inside the tank. (As it is a saddle tank and has 2 sides.) They want about $1000 to do this. So now Im looking up tutorials on how to change them out myself. Hope this helps someone out there.

Posted on Sep 12, 2013

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Sounds to me like ther is a inline filter that is dirty. mite even be clogged up injectors, like gummed up making fuel pumps work hard

Posted on Oct 08, 2012

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I had the same problem when i bought a 2004 pacifica with 44k for about the first year. the car never stalled or broke down, the problem eventually went away.

Posted on Apr 12, 2011

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I have a 2007 Chrysler Pacifica with 63,000 miles. It was a 1 owner (prior to me) & was well take care of with regular maintenance. The gas gauge will Not go above the 1/2 mark when filled completely full....


I do not own a pacifica but I do know quite a bit about cars and the digital read out gets in info from the gas gauge. so if the gas gauge is incorrect so will be the read out. I would start at the sending unit for the fuel gauge I bet you will find your problem there. The sending unit is most likely located in the gas tank

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run the fault codes and check for an EVAP venting problem as that affects the refueling process and engine problems after refilling

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WHEN FUEL GUAGE REACHES HALF WAY THE NEEDLE WILL DROP TO EMPTY. TRY TO PUT GAS IN AND MAYBE GET 5 GAL IN AND THE NOZZLE CLICKS OFF. IT WILL SHOW 3/4 TANK THEN. I KNOW IT SHOULD TAKE MORE WITH THE MILES I...


from what you are describing you have two(2) different problems
1- the wacky gauge- its acting like a grounding issue- wires are crushed/smashed on tank connector
2- not filling - venting issue- vent line to top of tank pinched
3 solution- run tank down to 1/4 or less and DROP tank down to inspect wires and hoses- sounds like at some point in time the tank took a hit and wedged itself upwards against the underside,pinched the vent line so there is too much pressure in tank and also crushing the wires/plug causing the erratic readings(worse with less weight as the tank moves more)
if unsure of how to do this- you can get a manual such as a HAYES book at auto parts story- good luck

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1 Answer

2007 Chrysler Pacifica having intermittent fuel gauge problems. Goes from normal to dead/ low fuel. Has full tank. Also, check engine light is on.


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This is a simple service fix. It's a glitch in the computer system. Take it to the dealer and there is some sort of code they can enter to "update" the car's computer.
Mine does it occasionaly, it annoying, but not harmful.
I've heard of some that will act up for a while, then stop, while others, have acted up and them the fuel gauge stays on empty.
Talk to the dealer.

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Hello, the answer to solve this problem is to take it to your nearest chrysler dealer and have them re-flash the updates to the ecu....since 2004, chrysler has had about 4-5 new updates since the date they were manufactured....you need to have the update that followed from your date of man. on your vehicle....They attempted to flash mine to the latest update and didnt work, turns out that they need the re-flash from back when...in order to get the gauage to stop fluctuating.....Hope this helps!!

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