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Old 12-23-2014, 02:48 PM   #111
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Quote:
Originally Posted by ATHiker View Post
Could you please share the max tongue weight and the specific payload (value shown on the inside of the driver door) for your Jeep Grand Cherokee Diesel?
I've never seen a tongue weight limit (or any trailer-specific limit) on a door placard, but of course I haven't come close to looking at every vehicle.

The 2015 Grand Cherokee owner's manual from the Jeep Owners Site may be useful. About the placard, it says:
Quote:
Certification Label
As required by National Highway Traffic Safety Administration regulations, your vehicle has a certification label affixed to the driver’s side door or pillar. This label contains the month and year of manufacture, Gross Vehicle Weight Rating (GVWR), Gross Axle Weight Rating (GAWR) front and rear, and Vehicle Identification Number (VIN). A Month-Day-Hour (MDH) number is included on this label and indicates the Month, Day and Hour of manufacture. The bar code that appears on the bottom of the label is your VIN.
This doesn't even have payload, which I find surprising, so perhaps there's more on the label than listed in the manual.

This is all the manual says about tongue weight:
Quote:
Tongue Weight (TW)
The tongue weight is the downward force exerted on the hitch ball by the trailer. The recommended tongue weight is 10% to 15% for a conventional hitch. You must consider this as part of the load on your vehicle.
Quote:
WARNING!
If the gross trailer weight is 3,500 lbs (1 587 kg) or more, it is mandatory to use a weight-distributing hitch to ensure stable handling of your vehicle. If you use a standard weight-carrying hitch, you could lose control of your vehicle and cause a collision.
... in other words, over 525 pounds of hitch weight, they require WD. This won't vary due to the different curb weight of different versions of the vehicle (such as diesel versus the other engines).
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Old 12-23-2014, 02:52 PM   #112
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Originally Posted by padlin View Post
On my 06 GMC truck I had a questionable tranny, slip on hills and such. While towing up and down hills the Scangauge would show 100 degree swings while the needle indicator on the dash wouldn't even budge.
The Scangauge and dash instrument were supposed to be showing the same value - presumably the transmission temperature - from the same sensor location?
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Old 12-23-2014, 02:56 PM   #113
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Originally Posted by Mike Lewis View Post
I recently asked my local Toyota dealer about exchanging the transmission fluid in my 2013 Tacoma for synthetic transmission fluid. I was told that it already had synthetic fluid; it came from the factory that way. That would explain the 300 deg F. trip for the warning light. I haven't researched this any, though.
I'm not surprised. Manufacturers are going to synthetic fluids (for engine oil and for both manual and automatic transmission fluids) to meet their performance targets. My 2004 Focus had synthetic (manual) transmission gear oil, my 2012 Mazda has synthetic engine oil (as is all 0W-20 oil), and I assume my 2004 Sienna has synthetic ATF.
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Old 12-23-2014, 03:02 PM   #114
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Originally Posted by Ron in BC View Post
I thought everyone had a Scan Gauge and I was the only one with an Ultragauge
I have an Autel MaxiTrip, yet another option (chosen simply because it was inexpensive).

Quote:
Originally Posted by Ron in BC View Post
Mine's a couple of years old and I don't think it reads transmission temperature on my Ford Ranger. Did you have to put in any specific codes to make it useable on your Tacoma?
That's a continuing challenge. Even with the popular Scan Gauge, codes required for many vehicles are unknown. If you're lucky, eventually someone finds what you need and shares it in a forum or through the gauge manufacturer.
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Old 12-23-2014, 03:29 PM   #115
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I had to look for some time to find the Tacoma code, then I had to send the ScanGauge unit in for an upgrade, since previous iterations didn't support tranny temps for that year Tacoma. You have to dig a little.
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Old 12-23-2014, 05:37 PM   #116
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Quote:
Originally Posted by padlin
On my 06 GMC truck I had a questionable tranny, slip on hills and such. While towing up and down hills the Scangauge would show 100 degree swings while the needle indicator on the dash wouldn't even budge.
Quote:
Originally Posted by Brian B-P View Post
The Scangauge and dash instrument were supposed to be showing the same value - presumably the transmission temperature - from the same sensor location?
My toyota has at least two sensors on the transmission, and they often show significantly different temperatures on my scan gage, one being much more stable than the other. Maybe padlin is seeing results from different sensors.
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Old 12-23-2014, 05:47 PM   #117
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Originally Posted by ice-breaker View Post
My toyota has at least two sensors on the transmission, and they often show significantly different temperatures on my scan gage, one being much more stable than the other. Maybe padlin is seeing results from different sensors.
I'm not understanding this. Do you flip back and forth between two different readings on your ScanGauge?
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Old 12-23-2014, 06:24 PM   #118
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Quote:
Originally Posted by ice-breaker View Post
My toyota has at least two sensors on the transmission, and they often show significantly different temperatures on my scan gage, one being much more stable than the other. Maybe padlin is seeing results from different sensors.
One must be the Canadian sensor(sp?)
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Old 12-23-2014, 07:30 PM   #119
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Quote:
Originally Posted by ice-breaker View Post
My toyota has at least two sensors on the transmission, and they often show significantly different temperatures on my scan gage, one being much more stable than the other. Maybe padlin is seeing results from different sensors.
Don't know if that was the case, it's certainly possible.
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Old 12-23-2014, 09:01 PM   #120
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Quote:
Originally Posted by santacruzer View Post
I'm not understanding this. Do you flip back and forth between two different readings on your ScanGauge?
I sometimes display both sensors at same time on my scan gage, call them TF1 and TF2.
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