Stalling when turning right with a 1/4 tank or less - Jeep Garage - Jeep Forum

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Old 12-02-2015, 07:26 PM
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Stalling when turning right with a 1/4 tank or less

Howdy guys, it's been a bit since I've had to reach out on here for problems, but I'm back.

Basically, I'm having stalling issues when making a hard right turn with a tank around a 1/4 full and under. I'm guessing it's a baffle issue, but I'm not positive that I may have a fuel pump problem. I haven't changed anything yet, but I did go and pick up a new fuel filter, and some seafoam to throw in the tank.

I do have a check engine light due to an o2 sensor off the back of the cat, which I picked that up too. So I'll be changing the fuel filter and o2 sensor, but I really don't think that's my issue. Is it possible I have a cracked line or fitting that could cause it to drop fuel pressure when turning? I haven't smelled anything, but I did have to drop the tank and change the fuel lines off the top of the tank a couple years back. But they're plastic up there now, so I don't think it could be corrosion there.

But it has become more of an issue now due to it dying on me when I came to a stop the other night with low fuel, and wife said it stalled the next day even after I filled it up. So now the baffles in the tank don't seem to coincide with my original thoughts. Possible that the fuel pump is going or gummed up? Seemed to all really manifest after I tried running a tank of 87 octane with ethanol through it. So before I changed a bunch of parts, I thought I'd touch base here.

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Old 12-02-2015, 10:39 PM
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Re: Stalling when turning right with a 1/4 tank or less

There are no baffles in the tank as far i have seen. Just changed my fuel pump module last Monday. My fuel pump was getting bad and only giving 25 psi instead of the normal 49 psi. Measured before the filter/regulator as well, to be sure it was the pump. I got a P0174 code (bank 2 too lean) with very high LTFT figures of around +30. (long term fuel trim). The PCM was trying to compensate for the lean mixture by increasing the fuel injector pulse (for that reason the high LTFT), but still ended up with a lean mixture, since the pressure was too low. New pump solved that.
Your case is different, i know. But i also would expect to see a lean mixture code if the problem was a too low fuel pressure causing it to stall.
Do you have a scanner with live data or a fuel pressure gauge to measure the fuel pressure at the rail?
The fuel filter/regulator change is a good first step, let us know if it solves the problem.
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Old 12-03-2015, 07:00 AM
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Re: Stalling when turning right with a 1/4 tank or less

I've got the same code if I remember right. I'll change the filter since it's been about 20k since I did it last.

Thanks for the reply Frank, I was hoping you were still around.
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Old 01-04-2016, 04:51 PM
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Re: Stalling when turning right with a 1/4 tank or less

Changed the fuel filter and ran a can of seafoam through the tank.

Went to change the o2 sensor off the cat, and found that the qd had failed and wasn't getting a quality connection. Fixed that, and the check engine cleared itself a day later. I don't go below a 1/4 tank much in the winter, so I haven't had a stall since. We'll see.
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