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 Post subject: Re: 2009 Liberty random hot start problem.
PostPosted: Sun Mar 15, 2020 1:18 pm 
LOST Newbie

Joined: Sun Apr 02, 2017 7:26 am
Posts: 4
Back again (after 4 years lol)

Still have the Liberty.
Still have the problem.

Again, this happens most often when we try to restart within a few minutes of shutting down.
The example above of "running into a store for a snack" is a good one.

The jeep will crank and start instantly as always, but the starter stays engaged. The engine is running but at a very low rpm and with considerable shaking. It will not recover from this, if the key is kept on it will do this forever.

Shutting off and retrying is most always unsuccessful, even repeatedly.

Retrying with the throttle pedal have way down always works, she's roar to life and all is well.

When I did plugs and things 3-4 years ago, that helped a lot. It was probably a year before it happened again. But as time goes by, it's happening more and more often. A couple times a month now. It is a worry. My wife's car, and she often goes into Great Smoky Mountains National Park to take pictures. Stopping and restarting, moving here and there, often. Yesterday it happened to her on the way to the Park, and she had to call me, she couldn't remember the trick and couldn't get her car to start.

Thank God it happened where she had a signal, she was able to call me, and I was able to help her get it going.

There is no cellular service in Great Smoky Mountains National Park!

I spent yesterday afternoon at Rocky Top Jeep test driving new wranglers.
She still doesn't want to spend the money. That damned Liberty (10 years old now, 153,000 miles, plus 60k dragged behind the motorhome) is still the best car she's ever had.

I got to fix this for good, for my own peace of mind at this point.
I'll do plugs and filters tomorrow, maybe coil packs too. Also gonna get a gas cap, the only code that car has ever thrown is an evap leak.

What about this cam sensor?
Where is it?
It is easy to get to and change?
But would that set a code? (we never get a code)

The problem "feels" to me like the PCM simply doesn't believe the engine is running. It's still trying to start it.
How does the PCM know if it's running?

 Post subject: Re: 2009 Liberty random hot start problem.
PostPosted: Wed Mar 18, 2020 8:54 am 
LOST Newbie

Joined: Thu Oct 26, 2017 9:36 pm
Posts: 43
When it does it; does it have a heavy smell of gas or anything like that. I had Chevy pickup and it had starting issues. We replaced everything. It finally wouldn’t start. We took it to the shop and it wound up being a $20 temp sensor telling the computer it was 20 bellow 0 and was chocking the motor out.

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