Question about 2005 Jeep Liberty

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2005 3.7 L liberty burning large amount of fuel also shakes between 70km > 100km an hour any ideas?

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First problem the shaking, is usuall a u-joint at 70 - 100, it should not be to difficult to find which one as it will be very dry and stiff in one or more of the knuckles or worse very loose as the needle bearings have fallen out but that is unlikely at this point. NOTE most new u-joints out of the factorys do not come with grease zirks so they do not accept grease. Aftermarket replacements do. Second the large amount of fuel ( you own a jeep! ) other than diagnostics to see if there is a large problem a tuneup and driving habits are the most common. Pick up a haynes manual on your 3.7 and change all filters, pvc valve and egr filter, plugs, oil etc. Then disconnect the battery for five minutes and allow the computer to reset itself which may help. Check tire pressure and all the basics. Leave A/C off when you really don't need it.

Posted on Jul 13, 2009

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Posted on Jan 02, 2017

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THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 14-001-09, DATED
APRIL 15, 2009, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A
COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT
REVISIONS.
SUBJECT: Hard To Fill With Fuel Or Fuel Nozzle Shuts Off Repeatedly MODELS: 2004 -2008 (CS) Pacifica
2009 (DS) Ram Truck (1500)
2007 - 2009 (DH) Ram Truck (1500/2500 Pick Up)
2004 - 2009 (DR) Ram Truck (1500 / 2500 Pick Up)
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2007 - 2009 (HG) Aspen
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DISCUSSION:
Customer may report that the vehicle is hard to fill with fuel or that the fuel pump nozzle
shuts off repeatedly while trying to fill vehicle.
This customer complaint can occur due to a number of different causes. The fuel tank is
the least likely cause of this condition. The following Diagnostic procedure can be used to
diagnose the issues.

DIAGNOSIS:
1. Is the vehicle a LX/LE/LC/L2?
a. Yes >> proceed to Step #2
b. No >> proceed to Step #4
2. Idle the vehicle 60 to 90 seconds upon stopping.
3. Does tank refill properly?
a. No >> proceed to Step #4
b. Yes >> Inform the customer to idle the vehicle for 60 to 90 seconds upon stopping if
vehicle was driven aggressively. This is due to the fact that on the LX/LE/LC/L2 the
fuel tank is a unique saddle tank design and needs 30 to 60 seconds while the
engine is running to level the fuel in both half's of the fuel tank. Allowing the vehicle
to idle for this amount of time will let the fuel pump transfer fuel to the left side tank,
opening the control valve and allowing normal fuel filling.
4. Disconnect the vapor recirculation tube at the fuel tank.
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7. Reconnect the vapor recirculation tube at the fuel tank.
8. Disconnect the other end of the vapor recirculation tube at the fuel filler tube.
9. Attempt to refill fuel tank.
10. Does tank refill properly?
a. Yes >> Replace fuel filler tube.
b. No >> Replace the vapor recirculation tube.
11. Disconnect the control valve to EVAP canister tube at the fuel tank.
14-001-09 REV. A -2-
12. Reconnect the vapor recirculation tube at the fuel tank.
13. Does tank refill properly?
a. No >> Replace Fuel Tank.
b. Yes >> Proceed to Step #14.
14. Reconnect the control valve to EVAP canister tube at the fuel tank.
15. Disconnect the control valve to EVAP canister tube at the EVAP canister.
16. Attempt to refill fuel tank.
17. Does tank refill properly?
a. Yes >> Blockage is in the EVAP Canister, or ESIM, or Clean air hose (ESIM vent
hose), or filter. Diagnose appropriately.
b. No >> Replace the control valve to EVAP canister tube.

POLICY:
Information Only
-3- 14-001-09 REV. A

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