differential temperature
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Joined: Jul 2005
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From: Central Florida
what i meant was there close in temp, the pans a little cooler than then hot line. When i'm working the truck, like towing, i'll see a bigger spread.
could the different weights and types of fluid, trans fluid vs diff fluid, be throwing the sender off? different resistance in the fluid?
could the different weights and types of fluid, trans fluid vs diff fluid, be throwing the sender off? different resistance in the fluid?
Registered User
Joined: Jul 2006
Posts: 632
Likes: 1
From: Redding, CA
You may need a ground from the frame to the diff housing.
The only grounds it gets otherwise are via u-joints, parking brake cables, and shocks.
Run a quick jumper and see if that makes a difference.
The only grounds it gets otherwise are via u-joints, parking brake cables, and shocks.
Run a quick jumper and see if that makes a difference.
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Joined: Nov 2024
Posts: 22
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I think he was referring to the fact that you have two probes in your truck - on in the trans pan and one in the diff pan (unless you switch them rapidly) - and that the one in the diff pan may not be working correctly.
Why don't you invest in an IR thermometer, and take the truck for a fast run down the highway. When it gets up to 250F, pull over onto the side of the road and shoot the diff temp on the pan. At least you'll know if it is indeed 250.
Personally, if it isn't making any noises/whining, I'd drive the heck out of it and wouldn't worry about it.
Why don't you invest in an IR thermometer, and take the truck for a fast run down the highway. When it gets up to 250F, pull over onto the side of the road and shoot the diff temp on the pan. At least you'll know if it is indeed 250.
Personally, if it isn't making any noises/whining, I'd drive the heck out of it and wouldn't worry about it.
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