Weird-ass Jeep Cherokee stall issue - resolved

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5chn3ll
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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by 5chn3ll » Tue Feb 05, 2019 4:00 pm

There were about 500 ways to go - I lucked into finding what turned out to be the issue.

I was really skeptical that it would actually be the root cause, but after a couple of weeks and about 500 miles including snow and limited off-roading, not a single indication that the issue is not resolved.

sweet victory wrote:
Tue Feb 05, 2019 11:03 am
Just an idear - you could've checked the fuel trims if you had a hunch about a fuel delivery issue. If the engine wasn't getting enough fuel, I'm sure the ecu would've shown an increase in fuel trims and potentially misfire codes.


Glad it was something that appears to be simple. Why do you think the engine would die only at stop signs and not while moving? Did you do a voltage drop test across the post and terminal clamp/other points?

Understeer: You will hit the wall with the front end.
Oversteer: You will hit the wall with the rear end.
Horsepower: How hard you will hit the wall.
Torque: How far you will move the wall.

"If, after coming to an abrupt stop, your wife is not whimpering in terror, you're no longer a Porsche driver."
-Mrs. 5chn3ll


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5chn3ll
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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by 5chn3ll » Tue Feb 26, 2019 4:00 pm

Over the weekend, I added a generic Autozone battery terminal clamp to the factory battery terminal clamp. It looks fantastically pathetic, but it works well and nothing has been hacked. The bottom half of the OEM clamp is now clamped inside the aftermarket clamp, which is clamped to the battery clamp terminal.
20190226_160116.jpg

Understeer: You will hit the wall with the front end.
Oversteer: You will hit the wall with the rear end.
Horsepower: How hard you will hit the wall.
Torque: How far you will move the wall.

"If, after coming to an abrupt stop, your wife is not whimpering in terror, you're no longer a Porsche driver."
-Mrs. 5chn3ll


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32wildbilly
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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by 32wildbilly » Tue Feb 26, 2019 4:54 pm

5chn3ll wrote:
Tue Feb 26, 2019 4:00 pm
Over the weekend, I added a generic Autozone battery terminal clamp to the factory battery terminal clamp. It looks fantastically pathetic, but it works well and nothing has been hacked. The bottom half of the OEM clamp is now clamped inside the aftermarket clamp, which is clamped to the battery clamp terminal.

20190226_160116.jpg
Still can't get over how lame the OEM clamp appears.

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5chn3ll
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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by 5chn3ll » Tue Feb 26, 2019 5:06 pm

I probably could have fixed it by adjusting the bend on the OEM clamp, but I was tired of dicking with it. Even with the lead shim, the Jeep clamp was still loose enough to turn by hand - which is kind of not great for something you bounce around off-road in.

Understeer: You will hit the wall with the front end.
Oversteer: You will hit the wall with the rear end.
Horsepower: How hard you will hit the wall.
Torque: How far you will move the wall.

"If, after coming to an abrupt stop, your wife is not whimpering in terror, you're no longer a Porsche driver."
-Mrs. 5chn3ll


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FRUNKenstein
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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by FRUNKenstein » Wed Feb 27, 2019 12:45 pm

You realize that's gonna cost you points at the next Jeep concours, right?
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32wildbilly
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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by 32wildbilly » Wed Feb 27, 2019 12:54 pm

FRUNKenstein wrote:
Wed Feb 27, 2019 12:45 pm
You realize that's gonna cost you points at the next Jeep concours, right?
I have to regretfully admit that was funny. Not frunkENSTEIN funny mind you, but still funny!

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5chn3ll
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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by 5chn3ll » Wed Feb 27, 2019 1:01 pm

Nothing is frunkenstein funny, up to and including frunkenstein. :D

Understeer: You will hit the wall with the front end.
Oversteer: You will hit the wall with the rear end.
Horsepower: How hard you will hit the wall.
Torque: How far you will move the wall.

"If, after coming to an abrupt stop, your wife is not whimpering in terror, you're no longer a Porsche driver."
-Mrs. 5chn3ll


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32wildbilly
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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by 32wildbilly » Wed Feb 27, 2019 1:11 pm

5chn3ll wrote:
Wed Feb 27, 2019 1:01 pm
Nothing is frunkenstein funny, up to and including frunkenstein. :D
True...true.

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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by 5chn3ll » Mon Mar 25, 2019 9:18 am

I checked the clamp this weekend, and it's still just not as tight as I'd like. Pretty sure that the battery post is either slightly out of spec re: diameter or roundness.

Regardless, I dug deep into my celebrated Southern heritage and applied a fix that I know will address the issue for the life of the battery...

...I drove a stainless screw into the gap between the clamp and the post. That clamp and post are now married in a union tighter than a certain orange bunghole waiting for the Muller summary to be released...

Understeer: You will hit the wall with the front end.
Oversteer: You will hit the wall with the rear end.
Horsepower: How hard you will hit the wall.
Torque: How far you will move the wall.

"If, after coming to an abrupt stop, your wife is not whimpering in terror, you're no longer a Porsche driver."
-Mrs. 5chn3ll


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32wildbilly
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Re: Weird-ass Jeep Cherokee stall issue - resolved

Post by 32wildbilly » Mon Mar 25, 2019 11:25 am

5chn3ll wrote:
Mon Mar 25, 2019 9:18 am
I checked the clamp this weekend, and it's still just not as tight as I'd like. Pretty sure that the battery post is either slightly out of spec re: diameter or roundness.

Regardless, I dug deep into my celebrated Southern heritage and applied a fix that I know will address the issue for the life of the battery...

...I drove a stainless screw into the gap between the clamp and the post. That clamp and post are now married in a union tighter than a certain orange bunghole waiting for the Muller summary to be released...
Bailing wire, duct tape or, apparently, a stainless steel screw has saved numerous failed engineering designs over they years!

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