Transmission over temp when I'm idling... -
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post #1 of 5 Old 10-13-2019, 08:27 AM Thread Starter
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Transmission over temp when I'm idling...

It seems impossible that my tranny could be overheating when I crank the Jeep and leave it in park but it's been happening a lot. I'm hoping it's a sensor, but I'd like some input on whether a transmission could get hot like that without being in drive.

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post #2 of 5 Old 10-13-2019, 09:34 AM
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2006 WK 
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It would be unusual.

What year? It's been my experience that the older WKs and XKs often have a bad seal on the #1 PCM connector. And the #1 PCM connector? The pin for the resistance-based transmission sensor temperature feed is the low point in that connector i.e. where all the water goes and messes up the resistance.

2006 WK Laredo 4x4 4.7L
1993 ZJ Laredo 4x4 4.0L Dead, sold, and rolling again
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post #3 of 5 Old 10-13-2019, 09:41 AM
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Could you post up vehicle details? Knowing what transmission you have is important.
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post #4 of 5 Old 10-13-2019, 11:07 AM
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yes it would be good to know trans NAG1 or 545REF but my knee jerk reaction and professional prejudice (I hate these gizmos) - bypass valve stuck in bypass.

PS diagram is typical location may change.
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When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #5 of 5 Old 10-14-2019, 08:44 AM Thread Starter
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2006 Overland with 5.7L Hemi.
Not sure of transmission specs but I'll check when I get home.
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