Starts but won't keep running

[DaleD]

My '05 Liberty will start but will only run for about 10 seconds. I was in an accident and rolled it on the drivers side. Any ideas?

 

[tombo_ontario]

is the engine knocking or ticking when it is running? (i.e. indicating severe engine problems) If not, you may want to try and replace the throttle position sensor...when mine went bad it sort of did the same thing you're describing.

 

[DaleD]

Runs perfectly but only for a few seconds. I must wait about 30 minutes before it will start again. I was running great before the accident.

 

[renegade 04]

Sounds like a key chip problem to me. I would try a spare key if you have one and see if the spare key starts the jeep.

 

[DaleD]

Thanks guys, I keep trying!

 

[uss2defiant]

I think if it's a key immobilizer issue, there should be an error code.

 

[DaleD]

Any other suggestions? I really want to get it going as soon as possible

 

[DaleD]

No codes come up, no light on dash.

 

[windman]

There may not be.if it is the cause it should start and stall in few seconds. As fuel pressure lost.Tps sensor also may not cause a cel too. Crank position sensors cause such problems and car may not start on each try.

 

[libertybob]

Roll over?

Some vehicles have a roll over switch that cuts power to the fuel pump if in a roll over. Do Liberty's have such a switch? If yes, there should be a reset button on it. One more thing to check.

I had a similar problem with a PT Cruiser with the chip key. The valet key will start the engine for a few seconds but requires the chip key to keep running. Is your stock key black (no chip) or grey and fat (chip in key)?

 

[dougmac]

If it was a sentry key problem, you would have an indicator on the dash.

I would check the crankshaft position sensor. Here is how the PCM processes a missing crank signal:

The PCM monitors the crankshaft position sensor. If the PCM does not receive a crankshaft position sensor signal within 3 seconds of cranking the engine, it will shut down the fuel injection system.
The fuel pump is activated by the PCM through the fuel pump relay.

 

[Billwill]

I do believe that in the case of a rollover or an airbag going off then something has to be reset by the Dealer.

If the PCM does not recognise the chipped key for the SKIM system the red LED for the SKIM will be lit constantly...should normally go out after the ignition is on for a few seconds. This light on constantly means you can start the Jeep but it runs for a few seconds only then cuts out.

 

[windman]

our key is an ordinary chrysler type grey key with immobilizer chip.

 

[projectkj]

look for a brken air line
(from any vent to any PCv valvue)
one from intake plenium to oil filler neck PCV valve
one from instake plenium to brake booster
one from intake box, to vent tubes on the valve covers

mine was doing take, mine was from the oiler fill next to back of intake planium, in behind throttle body drive side

 

[boboborino]

Did this ever get resolved? I wanted to post earlier, but maybe even just a system re-boot?? Disconnect the battery for a bit.:shrug:

K.I.S.S.(keep it simple stupid):shakehead:

:smoke2:
:happy160:

Bert

 

[Cpt Marvel]

What's the chance of, since it flopped over, sludge from the bottom of the gas tank coated the fuel filter?

 

[LibertyTC]

Have you done a fuel gauge pressure test at fuel rail?
Checked all the fuses under hood & interior side panel?+ Fuel Pump fuse/relay?
Does your Jeep have traction control & ABS?