Stalling Issue when Cold - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 11 (permalink) Old 12-03-2014, 06:01 PM Thread Starter
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Stalling Issue when Cold

I am not sure where else to put this and my google fu seems to be failing me.

2006 Jeep Command Limited 5.7

Here it is. When cold (30-40) I let the car warm for at least a minute or 2 then I pull off. When I get to my second stop maybe .25 miles to .3 miles from the house the Commander wants to stall. I can feel the car shake as a warning and if I left off the brake and roll a little I can stop it from stalling but it will persist at every stop until I let it stall or the car fully warms up. After the stall I have seen a few more stalls but it is not always consistent.

There are no codes thrown that I can find. I do see the RPM's drop off. The only thing I have done since this started was fix a leaking transmission seal. I replaced both filters and the gasket. And I had a leak in the front passenger side CV joint. I replaced the inner race and the oil seal.

Any suggestions though ideas?
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post #2 of 11 (permalink) Old 12-03-2014, 06:16 PM
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when were the plugs replaced last?
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post #3 of 11 (permalink) Old 12-03-2014, 06:17 PM Thread Starter
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I can not answer that. I have not done it I am at 78k.
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post #4 of 11 (permalink) Old 12-04-2014, 01:37 PM
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Quote:
Originally Posted by jhdeval View Post
I can not answer that. I have not done it I am at 78k.
I would change them then. They should be done every 30k on the Hemi, and they are finicky about proper plugs. Make sure to get the factory copper plugs, don't bother with platinum or iridium.

Not saying this is definitely your problem, but that does cause a lot of people trouble.
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post #5 of 11 (permalink) Old 12-04-2014, 02:18 PM
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Join Date: Apr 2014
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This thread addresses the same issue:

https://www.jeepcommander.com/forums/...t=36777&page=1

Also this:

https://www.jeepcommander.com/forums/...6/topics/11194

Last edited by luckyse7ens; 12-04-2014 at 02:21 PM.
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post #6 of 11 (permalink) Old 12-05-2014, 10:39 AM Thread Starter
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I am going to try replacing the spark plugs and see where that gets me. As for the cracked Transmission Filter I am not throwing any codes and this has been going on for about 2 months now. Also I personally changed the filter and inspected it prior to installation. I found no cracks and did not over tighten it so I do not believe this is related. While I could be wrong I am going to go with my gut on the transmission filter for now.

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post #7 of 11 (permalink) Old 12-05-2014, 01:25 PM
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Quote:
Originally Posted by jhdeval View Post
I am going to try replacing the spark plugs and see where that gets me. As for the cracked Transmission Filter I am not throwing any codes and this has been going on for about 2 months now. Also I personally changed the filter and inspected it prior to installation. I found no cracks and did not over tighten it so I do not believe this is related. While I could be wrong I am going to go with my gut on the transmission filter for now.
Keep us updated. Hopefully it is as simple as a spark plug change.

Here is a write up if you need it:

http://www.jeepforum.com/forum/f67/h...te-up-1015332/

Last edited by luckyse7ens; 12-05-2014 at 01:29 PM.
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post #8 of 11 (permalink) Old 12-05-2014, 04:01 PM Thread Starter
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I changed the spark plugs today and the idle does seem to be more regular. Also the plugs I pulled were WAY outta spec. Like .057-.063. Hopefully this does resolve it. Unfortunately I will not know for sure because in the South East US we are having some crazy warm weather. Like 70 degrees F the last few days.
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post #9 of 11 (permalink) Old 12-08-2014, 02:45 PM
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Join Date: Apr 2014
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Quote:
Originally Posted by jhdeval View Post
I changed the spark plugs today and the idle does seem to be more regular. Also the plugs I pulled were WAY outta spec. Like .057-.063. Hopefully this does resolve it. Unfortunately I will not know for sure because in the South East US we are having some crazy warm weather. Like 70 degrees F the last few days.
Mine were even a little worse than that when I replaced them, I was getting misfire codes. Even if it isn't the fix, it appears they needed to be done anyways so, glad you got that out of the way.
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post #10 of 11 (permalink) Old 12-08-2014, 04:23 PM
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Without a doubt, the biggest symptom of eroded away spark plugs (i.e. way over due to be changed) is stalling at idle, especially a cold motor in cold weather, rough idle, poorer performance and mileage. So being overdue for new plugs and having stalling, you did the first thing you should have, hopefully that will solve it.

Higher than recommended octane fuel can cause a cold motor to stall in very cold weather. Higher octane fuel is less volatile and thus vaporizes poorer than lower octane fuel, colder weather also makes it harder to vaporize and a cold motor is very sensitive to poor vaporized fuel. I.E. a bunch of drops and puddles of fuel are coming out of the injector into the cylinder, instead of a vapor of fuel going into the cylinder.

Fuel Injector cleaner can help, Chevron Techron most agree is the best and makes a difference.

But, really, you need to use the recommended octane for your motor, it designed to run off the fuel with those properties. Extra Octane really gets you nothing, so just use the recommended octane.*

*Higher Octane Fuel is also a little higher quality, it also uses a little less alcohol than the lower octanes, so that might account for the little better mileage that some folks have been able to measure when trying higher than recommended octane.

But if I was stalling a cold motor in cold weather, I would switch back to the recommended level of octane.
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