Gauges
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Junior User
Joined: May 2009
Posts: 86
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From: Smithfield Ky.
Gauges
I have just installed gauges in my '01 F250 SD 7.3 automatic and was wandering the parameters that I need to beaware of. Like what is the critical range for EGT's, trans. temp and turbo boost?
Thanks
Thanks
Posting Guru
Joined: Feb 2004
Posts: 2,365
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From: IOWA
EGTs: I try to keep the needle from touching 1200* when towing. It doesn't hurt anything if you spike it over that if you're "playing around".
I've seen charts of how the ATF breaks down as the temps go up. If you get up to 200* you better start checking something or stop and let it cool down. Since my tranny rebuild with a bigger pan and 6.0L cooler I have a hard time getting above 150* towing heavy.
Boost will vary with your set up. Depending on if you have a chip, and/or which one, you can get up to 25psi at WOT. Just keep it from surging, which is noticable by sound, not so much by the gauge.
Congrats on the gauges. You'll end up "living" by them and wonder how you got around without them. I just added a 'scan' gauge from Terminator Eng. and wondered how I drove my truck without it.
I've seen charts of how the ATF breaks down as the temps go up. If you get up to 200* you better start checking something or stop and let it cool down. Since my tranny rebuild with a bigger pan and 6.0L cooler I have a hard time getting above 150* towing heavy.
Boost will vary with your set up. Depending on if you have a chip, and/or which one, you can get up to 25psi at WOT. Just keep it from surging, which is noticable by sound, not so much by the gauge.
Congrats on the gauges. You'll end up "living" by them and wonder how you got around without them. I just added a 'scan' gauge from Terminator Eng. and wondered how I drove my truck without it.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
EGT- 1350 max, you can go higher for short bursts if you are careful.
Trans temp- over 200 and its time to pull over and let it cool off (normal should be about 70 degrees above outside air temp. My gauge rarely moves this time of year)
Boost- 25psi for a stock turbo if you want it to live
Trans temp- over 200 and its time to pull over and let it cool off (normal should be about 70 degrees above outside air temp. My gauge rarely moves this time of year)
Boost- 25psi for a stock turbo if you want it to live
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Junior User
Joined: May 2009
Posts: 86
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From: Smithfield Ky.
Thanks all
'01 F250 SD crew cab 4X4 7.3 automatic
I installed a cooler from a 6.0 and am running a triple disc. torque convertor and rebuilt trans. I have a Bully Dog 6 posistion 4 bank chip, Airade cold air intake, and silverline 4 inch exhaust. Mostly the truck is a comutor vehicle but I do use it to pull my 22,000 lb horse trailer. I also installed air bags to help with the load.
'01 F250 SD crew cab 4X4 7.3 automatic
I installed a cooler from a 6.0 and am running a triple disc. torque convertor and rebuilt trans. I have a Bully Dog 6 posistion 4 bank chip, Airade cold air intake, and silverline 4 inch exhaust. Mostly the truck is a comutor vehicle but I do use it to pull my 22,000 lb horse trailer. I also installed air bags to help with the load.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Aluminum melts at ~1220 degrees, so keep that in mind. Sustained EGTs below 1250ish are okay, but I'd get nervous above 1200. I've spiked mine over 1500 several times -- just don't keep it there more than a few seconds (like 20-30 or so).
Run syn ATF (it handles heat better) and put in an upgraded VB or mod your own (like with the TransGo Tugger). Bigger cooler is definitely needed here. My 26-row 6.0L cooler keeps my trans below 140 even on the hottest of summer days, unless I'm hammering it. Then it might get to 150-165ish.
Run syn ATF (it handles heat better) and put in an upgraded VB or mod your own (like with the TransGo Tugger). Bigger cooler is definitely needed here. My 26-row 6.0L cooler keeps my trans below 140 even on the hottest of summer days, unless I'm hammering it. Then it might get to 150-165ish.
Cargo Master
Joined: Feb 2005
Posts: 2,837
Likes: 1
22,000 lbs is some load! I would think you will definitely need to keep an eye on EGTs and Trans temps, especially with a tuner. You've already heard the numbers, but I just wanted to point out that if you live in a warmer climate the trans temps will exceed that 150 degree mark pretty easily in the summer time, especially pulling a load like that.
Posting Guru
Joined: Sep 2005
Posts: 2,476
Likes: 2
From: Monroe Michigan
EGTs: I try to keep the needle from touching 1200* when towing. It doesn't hurt anything if you spike it over that if you're "playing around".
I've seen charts of how the ATF breaks down as the temps go up. If you get up to 200* you better start checking something or stop and let it cool down. Since my tranny rebuild with a bigger pan and 6.0L cooler I have a hard time getting above 150* towing heavy.
Boost will vary with your set up. Depending on if you have a chip, and/or which one, you can get up to 25psi at WOT. Just keep it from surging, which is noticable by sound, not so much by the gauge.
Congrats on the gauges. You'll end up "living" by them and wonder how you got around without them. I just added a 'scan' gauge from Terminator Eng. and wondered how I drove my truck without it.
I've seen charts of how the ATF breaks down as the temps go up. If you get up to 200* you better start checking something or stop and let it cool down. Since my tranny rebuild with a bigger pan and 6.0L cooler I have a hard time getting above 150* towing heavy.
Boost will vary with your set up. Depending on if you have a chip, and/or which one, you can get up to 25psi at WOT. Just keep it from surging, which is noticable by sound, not so much by the gauge.
Congrats on the gauges. You'll end up "living" by them and wonder how you got around without them. I just added a 'scan' gauge from Terminator Eng. and wondered how I drove my truck without it.
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></O>Most automatic transmissions fail due to a breakdown of the transmission fluid (oil) caused by overheating. This chart provides a graphic display of heat's contribution to transmission failure.
