Just Installed gauges have questions - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 01-17-2014, 07:51 AM Thread Starter
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Just Installed gauges have questions

Just installed maxtow gauges in my 2001 7.3 and driving around town my tranny temperature got up to 240 degrees not even going over 2k rpms... the gauge goes up to 260 degrees so im guessing 240 is pretty high especially for driving the speed limit around town... what temperature should it be just normally driving the speed limit? And what is normal egt temp and boost pressure on a stock truck? By the way my tranny temp sensor is in the test port on the side of the tranny if that makes a difference. thanks for any help guys
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post #2 of 15 Old 01-17-2014, 08:03 AM
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I would suspect you have a gauge issue. Trans temps should be 60-80* above air temp. 220-230* is the red line for most people.

I highly doubt you have 240* trans temps, unless something is wrong/blocked in your cooler circuit.

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post #3 of 15 Old 01-17-2014, 08:05 AM
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EGT at idle should be in the 300* range, cruising down the road will be 600-700*. WOT you should peak at about 1100-1200* stock.

Boost will be around 2-5psi cruising, 17-19psi WOT.

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post #4 of 15 Old 01-17-2014, 08:39 AM Thread Starter
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Just started my truck after sitting for 5 hours and right as it started up my tranny temp was 148 degress...
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post #5 of 15 Old 01-17-2014, 10:53 AM
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{quick thread jack}
Joe - do you use the NPT port on the side of your Trans Case for you sensor port?
I know my trans fluid is full, and I know my sensor probe is working but the temps seem to read a lot lower than I expect (from that port).
Just curious.
{/quick thread jack}


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post #6 of 15 Old 01-17-2014, 12:49 PM
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Quote:
Originally Posted by AzPatMan View Post
{quick thread jack}
Joe - do you use the NPT port on the side of your Trans Case for you sensor port?
I know my trans fluid is full, and I know my sensor probe is working but the temps seem to read a lot lower than I expect (from that port).
Just curious.
{/quick thread jack}
"most" people use the test port when adding gauges, they then use this to post with. The internal temp sensor will read about 20* higher on average then the test port.

What you have to take from this is an average... 60-80* above air temp for the test port, 80-100* above air temp for the internal sensor...

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post #7 of 15 Old 01-17-2014, 08:57 PM
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Wouldn't your EGT's vary, depending on where the sensor was mounted? Some put it in the exhaust manifold, others further down the line, in the exhaust pipe.
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post #8 of 15 Old 01-17-2014, 09:19 PM
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Just Installed gauges have questions

What's the point in putting it in the exhaust pipe? The whole point is to be able to back off if your turbo is seeing high temperatures. A probe on the exhaust side of the turbo will be several 100 degrees lower, so in other words, too late.


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post #9 of 15 Old 01-17-2014, 09:20 PM
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It would, but the temps Joe posted are assuming the person who installed the gauge is smart enough to put it in the manifold where it should be

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post #10 of 15 Old 01-18-2014, 05:57 AM Thread Starter
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Does anyone have an idea what the issue with my tranny temp gauge could be? Because there is no way its running that hot from around town driving
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