"02" trans overheating on a psd
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"02" trans overheating on a psd
i have an "02 PSD, great truck, does anybody have any tricks to beef up the automatic trans? i had a temp gauge installed in the return line so i can see what the trans is doin.
long hauls the trany temp hangs around at about 150 deg. not bad, but in traffic when towing i notice the temp climbs real fast.
i have heard that this is the week link on the late 7.3 transmissions, does anybody have a fix or suggestions ??? any help would be great.
PS. surly some one has had problems with this trans.
Todd
long hauls the trany temp hangs around at about 150 deg. not bad, but in traffic when towing i notice the temp climbs real fast.
i have heard that this is the week link on the late 7.3 transmissions, does anybody have a fix or suggestions ??? any help would be great.
PS. surly some one has had problems with this trans.
Todd
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thanks, what about pulling from a stop or pulling a hill while it shifting thru the gears, mine seems to spike real fast. or maybe my inline temp gauge is making me jumpy !!
the stock gauge on the dash goes to the middle and thats it, if i just look at the stock everything would be fine
tw
the stock gauge on the dash goes to the middle and thats it, if i just look at the stock everything would be fine
tw
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From: New Hampshire
i'll just reccomend the basics... change the fluid and filter... use synthetic... put the sonnax kit into the tranny... alot of people in here, including myself, believe the tranny should have come setup like this from the factory... shifts MUCH BETTER... and.. if you do any towing, especially in any real heat or up any mountains, i would consider an additional tranny cooler...
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From: N. Georgia
The stock gauge is worthless. Mine will stay in the same place whether it's 120 or 190. Yes, mine jumps up and is slow to come down when working it hard on hills or in stop and go traffic. With your gauge location (just not where mine is located) I would think the temps should still be right. If this is the case, it doesn't need to go over 220. 200 or below shouldn't hurt a thing.
Joe
Joe
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Originally Posted by toddsolds
thanks, what about pulling from a stop or pulling a hill while it shifting thru the gears, mine seems to spike real fast. or maybe my inline temp gauge is making me jumpy !!
the stock gauge on the dash goes to the middle and thats it, if i just look at the stock everything would be fine
tw
the stock gauge on the dash goes to the middle and thats it, if i just look at the stock everything would be fine
tw
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Joined: Dec 2004
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From: norco,ca
trans heat
I have a 99 F350 4x4 crewcab long bed ps. When I run in 4 wheel low the heat in the trans goes nuts. In a snow storm, 8000 feet 15 mph up hill its goes to 220 degrees. Last week puling a trailer about 27 foot with motor cycles in the sand I made a u-turn stopped got the guy out in front of me letting my truck idle and when I went to move nothing. It droped 3 quarts of atf out the converter cover and the guage was pegged over 250 degrees. When it cooled down and I put 3 quarts back in it it seemed fine. It towed the trailer home 250 miles and shifted great. I serviced it and all seems well. My question is why only in low 4x4. Is there a new coverter that can be installed for this, or is it in t the trans. 105,000 miles the trans has been serviced twice with new fuild and filter.
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From: Clinton,mi
Something isnt right.I have a crewcab sb with a 7.3 with auto and i can pull my 30ft travel trailer in 100 degree weather and go up some decent hills that are well over a 1/2mile long and just stand on the throttle never let up and i have yet to see over 190 degrees In town stop go you name.I did add a trans cooler but even before that it never went over 200.My travel trailer weights just under 10,000lbs
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thanks for writing, mine does just fine on open hwy while in gear locked up, 150 deg. it's just when sitting in traffic and then take off that it goes up in temp, but what causes it is the oil in the converter sits and generates heat, then when i hit the throttle, the oil then leaves the converter and passes thur the return line ( which has the temp sendor in it ) to the cooler. i am getting lots of info from many people.
thanks for every bodys help
todd
thanks for every bodys help
todd
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From: South Dakota
Your tranny is perfectly fine.
Alot of people forget that the tranny lines are also routed through the engine radiator in-addition to what ever auxillary coolers that may exist.
Since your engine probably has a 180F T-stat or so, combined with the low airflow passing through the radiator at idle in stopped traffic causes heat transfer to your tranny fluid from the radiator fluid. This is perfectly normal as long as the fluid doesn't climb over the 200F mark.
The reason for routing the T-fluid through the engine radiator, is for additional cooling capacity and to aid in the T-fluid warm-up upon start-up. This is especially true when it comes to winter temperatures.
Alot of people forget that the tranny lines are also routed through the engine radiator in-addition to what ever auxillary coolers that may exist.
Since your engine probably has a 180F T-stat or so, combined with the low airflow passing through the radiator at idle in stopped traffic causes heat transfer to your tranny fluid from the radiator fluid. This is perfectly normal as long as the fluid doesn't climb over the 200F mark.
The reason for routing the T-fluid through the engine radiator, is for additional cooling capacity and to aid in the T-fluid warm-up upon start-up. This is especially true when it comes to winter temperatures.
Postmaster
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From: New Hampshire
Originally Posted by superrangerman2002
Your tranny is perfectly fine.
Alot of people forget that the tranny lines are also routed through the engine radiator in-addition to what ever auxillary coolers that may exist.
Since your engine probably has a 180F T-stat or so, combined with the low airflow passing through the radiator at idle in stopped traffic causes heat transfer to your tranny fluid from the radiator fluid. This is perfectly normal as long as the fluid doesn't climb over the 200F mark.
The reason for routing the T-fluid through the engine radiator, is for additional cooling capacity and to aid in the T-fluid warm-up upon start-up. This is especially true when it comes to winter temperatures.
Alot of people forget that the tranny lines are also routed through the engine radiator in-addition to what ever auxillary coolers that may exist.
Since your engine probably has a 180F T-stat or so, combined with the low airflow passing through the radiator at idle in stopped traffic causes heat transfer to your tranny fluid from the radiator fluid. This is perfectly normal as long as the fluid doesn't climb over the 200F mark.
The reason for routing the T-fluid through the engine radiator, is for additional cooling capacity and to aid in the T-fluid warm-up upon start-up. This is especially true when it comes to winter temperatures.
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250 F and 280 F are not normal nor acceptable transmission oil temperatures. You guys who tow hard at low speeds below the lockup speed (35 to 45 mph) need to install auxiliary coolers to keep it down below 220 F or so. Alternatively, you could add a circuit which lets you lock the torque converter at any speed, so it can be locked when in low range or any other gear when towing heavy below 35 mph or so. Its the torque converter slipping while unlocked under load that generates the very high temperatures, not sitting around idling while in gear.
The stock guage in the 2002+ trucks warms up to midrange at temperatures well below 150 F, then is locked at midrange by the truck computer till the temperature exceeds 230 F. It then jumps up to the yellow range, and finally to red if the temperature exceeds ? (Somebody posted this, but I forget). So if the stock guage starts up beyond the mid-range locked point, it is time to pull over and cool it down. Better to add an aftermarket guage, so you can see continuously what the temperature is.
Warren
The stock guage in the 2002+ trucks warms up to midrange at temperatures well below 150 F, then is locked at midrange by the truck computer till the temperature exceeds 230 F. It then jumps up to the yellow range, and finally to red if the temperature exceeds ? (Somebody posted this, but I forget). So if the stock guage starts up beyond the mid-range locked point, it is time to pull over and cool it down. Better to add an aftermarket guage, so you can see continuously what the temperature is.
Warren
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From: Near DC
Wait a minute.....
He installed the sender in the RETURN line, he's seeing the temps AFTER cooling.
You said you saw 280??????
Summin' ain't right with that, especially in the return flow.
At the very least, I'd change the fluid, you've cooked it if it actually hit 280.
He installed the sender in the RETURN line, he's seeing the temps AFTER cooling.
You said you saw 280??????
Summin' ain't right with that, especially in the return flow.
At the very least, I'd change the fluid, you've cooked it if it actually hit 280.