Liberty Takes Multiple Attempts to Start -
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post #1 of 7 Old 06-29-2013, 09:19 PM Thread Starter
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Liberty Takes Multiple Attempts to Start

2006 Jeep liberty Sport 3.7L. I already replaced fuel pump (which burnt out). I turn the key in the ignition and the Jeep will crank but not turn over. I usually have to turn the key 90% of the way to fill the fuel lines (or something), turn the key back off ( do this a couple of times), then turn the key to crank while I pump the throttle to start the Jeep. What gives? My Jeep is literally falling apart, but this it a big issue and I don't have a lot of money. I'm sure I can do the repair myself but I don't know what the problem is. Please help.

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post #2 of 7 Old 06-30-2013, 05:49 AM
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2003 KJ Liberty 
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Once it starts, does it run good?

Since it sounds like it could be fuel related, I'd start by getting the fuel pressure tested. if it's low or not holding pressure then start down then you know your problem is due to lack of fuel.

Also, is the Check Engine Light on? If so, get the codes scanned to see if they indicate anything.
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post #3 of 7 Old 06-30-2013, 06:19 AM
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Pumping the throttle doesn't do anything on Fuel Injected cars. This was done on cars with a carburetor to get the accellerator pump to squirt gas into the intake.

New fuel pump might be bad.

82 Cherokee WT - SOA/SF/agr box/Borgeson ujoint steering shaft/401/performer/holley TA/HEI/BeCool/727/np208/d44(aussie)/amc20(ARB)/BFG 35X12.5/Corbeau Moab Seats/RCI 6point Harness,Hella Aux lights/tuffy console/killer32 slider bars/custom bumpers and roll bar/Alpine head unit/amps/speakers 2002 Liberty Limited Early edition - Basically stock
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post #4 of 7 Old 06-30-2013, 09:56 AM Thread Starter
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Yeah, once it's started it runs good. I've read on this forum before about a broken "check valve" causing the fuel to drain back into the gas take when the vehicle is turned off. But I'm not sure where this check valve might be. Also, in another thread someone mentioned an issue with the position of the Libertys' fuel filter, and needing to get an upgrade kit. Sounds $$$$ to me. What do you guys thinks?
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post #5 of 7 Old 06-30-2013, 11:59 AM
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Could be .. if it is the check valve, you will see the fuel pressure drop once the vehicle is turned off. I would just check the fuel pressure to ensure it's really a fuel problem before spending any time or money on guessing and blindly replacing parts. I read something online recently about a guy using a bike pump to check fuel pressure, although I didn't read too closely on how he did it. Some parts stores will loan/rent tools, so see if they have a fuel pressure guage you can use. Or just find a local garage and slip the guy a $20 check it for you.
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post #6 of 7 Old 07-03-2013, 07:11 AM
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-pressure check like is recommended.

-also need details on fuel pump replacement:

did you repalce the whole module?

was it and aftermarket branded fuel pump?
(some aftermarket pumps can be of low quality)

06 kj 3.7l, 6speed manual, np241 command track

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12 kk 3.7L, 42rle, mp1522, d-30, 8.25.
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post #7 of 7 Old 11-19-2013, 08:00 PM
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so did you ever figure this out? My 2006 Liberty is doing the same thing now!!
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fuel pump , liberty , start problems

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