coolant filter?
Thread Starter
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Tuned
Joined: Jun 2010
Posts: 427
Likes: 1
From: New York
coolant filter?
Hey guys, I have a question, I got my gauges installed in my truck about a month and a half ago. I've been closely monitoring my transmission temps because they are wayyyy higher then they should be for just daily driving. Some days its fine, and some days its at 220. Way to high for a half hour drive home..all highway and at 60. So, my question is is there a coolant filter in our cooling system? Its a 2002 f 350, I just had the fluid and filter changed about four months ago, probably 17,000 miles. A 6.0 tranny cooler is on my list of mods, probably sooner then later for obvious reasons. Thanks guys. And is there a parts package available for the 6.0 cooler swap in?? I'd love to order the cooler and a handcrafterd 6.0 cooler install package.
Cargo Master
Joined: Jul 2011
Posts: 2,675
Likes: 979
From: Walpole, MA
Like mentioned above no coolant filter stock but I have a baldwin head and filter waiting to go in this weekend. 220 is a bit toasty, are you in traffic a lot in your ride home? How old is the fluid?
BTS, John Wood and a bunch of other vendors will sell you a 6.0 kit with the fitings you need. I got mine used off car-part.com for $100 and hit up a parker store for 30 bucks worth of fittings.
BTS, John Wood and a bunch of other vendors will sell you a 6.0 kit with the fitings you need. I got mine used off car-part.com for $100 and hit up a parker store for 30 bucks worth of fittings.
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Your elevated trans temperatures may be due to a transmission lube oil "bypass valve" partially open all the time. It opens to immediately re-circulate the oil coming out of the trans (that goes up to the coolers) back to the input port that's coming back from the coolers.
It does this ONLY when the coolers get too much resistance to flow, which usually means crud built up in them. Of course, it could also be a pinched cooler line (it happens), or it could even be a faulty bypass valve opening at too low a pressure resistance.
There's a procedure for checking this which involves removing the rear cooler line and running the fluid to a collection pan. I believe that it's a quart in 15 seconds, minimum, and nothing coming out of the rear port. This test is done at engine idle.
If you perform this test and don't get the expected results, check back and we'll be more specific with continuing the diagnosis.
Pop
It does this ONLY when the coolers get too much resistance to flow, which usually means crud built up in them. Of course, it could also be a pinched cooler line (it happens), or it could even be a faulty bypass valve opening at too low a pressure resistance.
There's a procedure for checking this which involves removing the rear cooler line and running the fluid to a collection pan. I believe that it's a quart in 15 seconds, minimum, and nothing coming out of the rear port. This test is done at engine idle.
If you perform this test and don't get the expected results, check back and we'll be more specific with continuing the diagnosis.
Pop
Thread Starter
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Tuned
Joined: Jun 2010
Posts: 427
Likes: 1
From: New York
Okay. Thank you very much. The bypass sounds like it may be applicable to this problem. Somedays its perfect and never goes above 150 to 180. Other days it rides 220 like nothing. And no, no heavy traffic. just let it go into overdrive and drive 60. No bad hills no nothing. 220 is very unacceptable for this thing doing 1800 rpms down the road. There's got to be a coolant flow issue or something among the likes. Tranny fluid is just a few months old. Filter and fluid changed almost 20000 miles ago.
Cargo Master
Joined: Mar 2006
Posts: 2,502
Likes: 2
From: Bend Oregon
just to make sure.....
when you are saying coolant, are you referring to the transmission fluid? or are you following logic that your high transmission temp is due to an engine coolant/antifreeze issue?
when you are saying coolant, are you referring to the transmission fluid? or are you following logic that your high transmission temp is due to an engine coolant/antifreeze issue?
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Logistics Pro
Joined: Apr 2010
Posts: 4,446
Likes: 26
From: Panama City, FL
x2 on this, I thought he was refering too a coolant/antifreeze filter
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Molon Labe
Joined: Dec 2006
Posts: 5,272
Likes: 1
From: Alaska
Your elevated trans temperatures may be due to a transmission lube oil "bypass valve" partially open all the time. It opens to immediately re-circulate the oil coming out of the trans (that goes up to the coolers) back to the input port that's coming back from the coolers.
It does this only when the coolers get too much resistance to flow, which usually means crud built up in them. Of course, it could also be a pinched cooler line (it happens), or it could even be a faulty bypass valve opening at too low a pressure resistance.
There's a procedure for checking this which involves removing the rear cooler line and running the fluid to a collection pan. I believe that it's a quart in 15 seconds, minimum, and nothing coming out of the rear port. This test is done at engine idle.
If you perform this test and don't get the expected results, check back and we'll be more specific with continuing the diagnosis.
Pop
It does this only when the coolers get too much resistance to flow, which usually means crud built up in them. Of course, it could also be a pinched cooler line (it happens), or it could even be a faulty bypass valve opening at too low a pressure resistance.
There's a procedure for checking this which involves removing the rear cooler line and running the fluid to a collection pan. I believe that it's a quart in 15 seconds, minimum, and nothing coming out of the rear port. This test is done at engine idle.
If you perform this test and don't get the expected results, check back and we'll be more specific with continuing the diagnosis.
Pop
I learned this from a Ford trans guru. A weak pump may still pass the test at idle.
Thread Starter
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Tuned
Joined: Jun 2010
Posts: 427
Likes: 1
From: New York
I apologise, I'm following the logic that my high transmission temperature is due to an antifreeze/coolant flow. I don't know a lot about the 4r100, but I am not correct in thinking the radiator also helps cool the transmission? I'll have to try the test out and see how much comes out. I won't be able to get it done till this weekend, I'll have to incorpporate it in with installing my hawk performance super duty brake pads I just received from riffraff.
Cargo Master
Joined: Mar 2006
Posts: 2,502
Likes: 2
From: Bend Oregon
you do have an OTW ( oil to water) as well as a OTA ( oil to air ) cooler on your truck. I think they started that on the 2001 model year? I highly doubt high coolant temps would be causing your high transmission temps, more than likely plugged transmission oil coolers, obstructed fins on your OTA cooler or crimped/plugged transmission lines.Another possibility is the bypass is sticking open on the transmission.
First thing to do would be to pull the return line off the transmission and see if you have oil circulating through the coolers.
First thing to do would be to pull the return line off the transmission and see if you have oil circulating through the coolers.
Thread Starter
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Tuned
Joined: Jun 2010
Posts: 427
Likes: 1
From: New York
Ahh I see. I appreciate your time. That will be my next step. I thought the radiator helped cool the transmission. My mistake. If the fluid that comes out of the line isn't up to par, meaning fills the container a quart for every fifteen seconds. Take the coolers apart and clean them?
You may be able to flush one out to clean but no take apart!!!