Acceptable temps?
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Senior User
Joined: Jan 2003
Posts: 241
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From: Redding, Ca USA
Acceptable temps?
Now that I got my gauges installed what are the acceptable temps for EGT and trans when towing? The shop mounted the pyro probe in the downpipe after the turbo. EGT gauge goes to 1500 and trans gauge goes to 260. I know it shouldn't get close to that, but at what temps should I be backing off the throttle so I don't hurt the engine or trans?
Thanks
Thanks
Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
EGT needs to be moved to the exhaust manifold.
If your seeing 1500 at the DP then its 1800-2000* on the piston. That motor won't last at those temps. 1200* is max and don't keep it there long.
Trans temp should be shouldn't be that high. The highest mine ever got was 200*
If your seeing 1500 at the DP then its 1800-2000* on the piston. That motor won't last at those temps. 1200* is max and don't keep it there long.
Trans temp should be shouldn't be that high. The highest mine ever got was 200*
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
Yikes!! That's really hot!
The EGT pyrometer should have been in the manifold and not in the downpipe. If it is in the DP, you need to add about 200* to that reading and that's likely what you're seeing at the manifold. You want to keep it below 1200*. A short run above that is okay (very short) but sustained temps above 1200* will damage things for sure.
As for the transmission temperature, you want to see it get no hotter than about 210 degrees. The fluid starts to break down pretty fast at temps above 210. As far as that goes, the cooler you can keep it the better. 80-100* above the ambient temperature is a good place to be.
Something definitely sounds amiss with those temps. Is the engine stock? Do you have it chipped? How heavy are you towing? I'm wondering if the gauges are screwed up giving you readings like that....
One thing is for sure, if those temps are right, you're running WAY too hot in both regards.
The EGT pyrometer should have been in the manifold and not in the downpipe. If it is in the DP, you need to add about 200* to that reading and that's likely what you're seeing at the manifold. You want to keep it below 1200*. A short run above that is okay (very short) but sustained temps above 1200* will damage things for sure.
As for the transmission temperature, you want to see it get no hotter than about 210 degrees. The fluid starts to break down pretty fast at temps above 210. As far as that goes, the cooler you can keep it the better. 80-100* above the ambient temperature is a good place to be.
Something definitely sounds amiss with those temps. Is the engine stock? Do you have it chipped? How heavy are you towing? I'm wondering if the gauges are screwed up giving you readings like that....
One thing is for sure, if those temps are right, you're running WAY too hot in both regards.
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
Yikes!! That's really hot!
The EGT pyrometer should have been in the manifold and not in the downpipe. If it is in the DP, you need to add about 200* to that reading and that's likely what you're seeing at the manifold. You want to keep it below 1200*. A short run above that is okay (very short) but sustained temps above 1200* will damage things for sure.
As for the transmission temperature, you want to see it get no hotter than about 210 degrees. The fluid starts to break down pretty fast at temps above 210. As far as that goes, the cooler you can keep it the better. 80-100* above the ambient temperature is a good place to be.
Something definitely sounds amiss with those temps. Is the engine stock? Do you have it chipped? How heavy are you towing? I'm wondering if the gauges are screwed up giving you readings like that....
One thing is for sure, if those temps are right, you're running WAY too hot in both regards.
The EGT pyrometer should have been in the manifold and not in the downpipe. If it is in the DP, you need to add about 200* to that reading and that's likely what you're seeing at the manifold. You want to keep it below 1200*. A short run above that is okay (very short) but sustained temps above 1200* will damage things for sure.
As for the transmission temperature, you want to see it get no hotter than about 210 degrees. The fluid starts to break down pretty fast at temps above 210. As far as that goes, the cooler you can keep it the better. 80-100* above the ambient temperature is a good place to be.
Something definitely sounds amiss with those temps. Is the engine stock? Do you have it chipped? How heavy are you towing? I'm wondering if the gauges are screwed up giving you readings like that....
One thing is for sure, if those temps are right, you're running WAY too hot in both regards.
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
With the pyro in the downpipe. when you start seeing 800-900, you should be worried.
Cody has so many youtube pages, I cannot find the video.
He hooked up both gauges and saw anywhere from a 200-400 degree difference in temps between the manifold and down pipe.
Cody has so many youtube pages, I cannot find the video.
He hooked up both gauges and saw anywhere from a 200-400 degree difference in temps between the manifold and down pipe.
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
Lol, I get it now!!
Had me freaking out there for a minute!
That being said, you want to keep the EGT's below about 900-1000* on the gauge with the pyro in the DP and the trans temp below about 200 if you can. Transmission coler would be a good idea when you get a chance, especially if the camper you have weighs much.
At least I wasn't the only one that took it that way...
Had me freaking out there for a minute!
That being said, you want to keep the EGT's below about 900-1000* on the gauge with the pyro in the DP and the trans temp below about 200 if you can. Transmission coler would be a good idea when you get a chance, especially if the camper you have weighs much.
At least I wasn't the only one that took it that way...
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
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Senior User
Joined: Jan 2003
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From: Redding, Ca USA
I was thinking the shop would put the pyro in the manifold...but I guess not. I do have a heavy duty trans cooler. Ok I got it....thnx for the replies. No more than 900-1000 for egt with pyro in downpipe and no more thst 200-210 for trans
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Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
The trans can run all day long at 220F with NO problems. You can go up to 250F for no more than a half hour at a time with NO problems.
If it does get too hot idle or fast idle in park or neutral to cool it. Don't shut the engine off with a hot transmission.
If it does get too hot idle or fast idle in park or neutral to cool it. Don't shut the engine off with a hot transmission.
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
I would imagine the high temp for a short period is okay as well.
I was told to start to worry at 230 though.
With a load, 210-220 seems normal.
Thread Starter
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Senior User
Joined: Jan 2003
Posts: 241
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From: Redding, Ca USA
All went well on our recent trip w/ the trailer. Truck did great w/ new downpipe and the gauges....I Love Them!! Trans never got above 150...EGT's got to 950 a couple of times, but there wern't really any long hills to climb.
Hotshot
Joined: Feb 2009
Posts: 10,410
Likes: 77
From: Plankinton, SD
I'd really think about getting that pyro in the exhaust manifold. Those temps can vary a lot between the downpipe and manifold. If they vary 200, you were at 1150, not a problem. If it was varying up to 400, you're at 1350, very long there and you have problems.
I'm glad everything worked well for you on your trip, just stating my opinion above.
I'm glad everything worked well for you on your trip, just stating my opinion above.