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Old 07-03-2009, 11:31 AM   #1
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Re: Tempature Gauges

I'll be dollars to doughnuts it's a tranny temp gauge.

Ben.
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Old 07-05-2009, 09:35 PM   #2
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Re: Temperature Gauges

Either way if your tranny temp gets to that pink mark you should go take a break and let it cool down.
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Old 07-05-2009, 11:01 PM   #3
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Re: Temperature Gauges

tranny cool down instructions are:

put transmission in neutral and let engine run at idle or slightly above.

The problem with shutting off the bus when the engine, or the trans is hot is that even though the temperature of the fluid is really hot where your temp probe is, the fluid is even hotter someplace else inside the engine/trans. In an engine, The cylinder heads may be approaching several hundred degrees, and having coolant flow over these metal parts keeps them from getting even hotter. Shutting off the engine can cause non-circulating water to stay in contact with metal that is several hundred degrees over heating the coolant, and possibly damaging the metal parts.

not to mention your turbo! Turbo's really like to cool down for a few mins before shutting the engine off, especially when you pull off at a rest area!

the trans is a lot like the engine, where you can have trans fluid contacting really hot metal parts. The best way to cool the metal parts is to have fluid constantly circulating.
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Old 07-05-2009, 11:59 PM   #4
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Re: Temperature Gauges

If the lower gauge is a tranny temp gauge you SHOULD see it move with the engine temperature unless your transmission cooler is totally separate from the radiator. In many cases the aux. tranny cooler is plumbed in series with the standard radiator tank cooler so you should still see some rise. Just food for thought.
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Old 07-06-2009, 11:03 AM   #5
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Re: Temperature Gauges

Tranny cooler on my 2500 is in front of the radiator and has its own fan. I never see the needle move unless I am pulling a trailer.
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Old 11-17-2009, 01:12 AM   #6
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Re: Temperature Gauges

transmission coolers are usually in the radiator for 2 reasons: 1) to bring the tranny temperature UP quickly as the engine warms up to help it run reliably and to remove moisture. 2) to cool it down when you are working it hard. If transmission temperatures run low all the time then you create acids and moisture that attack it and will shorten it's life. sportyrick
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Old 11-21-2009, 11:48 AM   #7
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Gauges and coolers

The deciding factor with regard to coolers and gages is the dollar cost. Makers or buses make buses to make a good profit. The makers could easily build a better product but most items are designed with a longivety factor. Each item has a life span. Building a cooler inside a radiator is a great cost saving method.
Having a trans cooler in the radiator makes the trans be the same temp as the engine and also makes the engine the same temp as the trans. Seperate coolers, sized properly with large supply lines work the best. Using a single gage with 2 senders and a spst switch works very well. The senders must be matched to the gage. Trans coolers must be sized for the intended work load. The number 1 reason for trans failure is over heating and low fluid level. An external fluid filter is a nice option. Frank
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Old 08-21-2010, 09:40 AM   #8
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Re: Temperature Gauges

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what nature of spam madness is this?!?
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