Remove Tranny Fluid Bypass?
Thread Starter
|
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Remove Tranny Fluid Bypass?
I've been thinking about doing this, as I never have to drive where it might be real cold. Even so...
It's just a nagging feeling I have that it could fail open, giving me bypass all the time and no tranny cooling.
Auto trannys lived for decades in freezing weather without the need for this, so I sorta' wonder just how "necessary" it really is.
Seems like it could be of very marginal necessity, with potentially catastrophic results if it fails.
Any knowledgeable thoughts out there?
Pop
It's just a nagging feeling I have that it could fail open, giving me bypass all the time and no tranny cooling.
Auto trannys lived for decades in freezing weather without the need for this, so I sorta' wonder just how "necessary" it really is.
Seems like it could be of very marginal necessity, with potentially catastrophic results if it fails.
Any knowledgeable thoughts out there?
Pop
Thread Starter
|
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Originally Posted by strokin_it7.3
He says keep it. Hot fluid is better than no fluid!
That doesn't make sense to my old, sometimes not-so-well-used brain. Under what conditions would I get "no fluid"? A pinched line or clogged cooler? That would make sense only then, but as I said, trannys have lived (since the late '40's) without this added "enhancement", and it's just one more thing to go wrong. And when it goes wrong, it creates a problem that never existed in history.
Pop
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
I think that's good idea. I've often toyed with that idea if I had an automatic.
And as an added margin of safety you could rig up a buzzer to a pressure switch that closes if pressure gets too high on the feed side of the ATF cooler.
And as an added margin of safety you could rig up a buzzer to a pressure switch that closes if pressure gets too high on the feed side of the ATF cooler.
Thread Starter
|
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Oooooooo! Pressure switches I gots!
Thinkin', thinkin'...
Woo-haaaaa!
Kwik, you sure think deep for a non-math whiz!
You 'da "go-to" guru!
And now, for the next LED on the instrument panel...
Pop
Thinkin', thinkin'...
Woo-haaaaa!
Kwik, you sure think deep for a non-math whiz!
You 'da "go-to" guru!
And now, for the next LED on the instrument panel...
Pop
Last edited by SpringerPop; May 7, 2007 at 03:34 PM.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Well thank you Pop.
It just seemed logical to assume that a clogged cooler would jack the pressure up on the feed side.
I have a thought: With the bypass eliminated all the fluid is going to go through the cooler, even in the dead of winter. You may need to put a temperature or time delay in that warning system that turns off the buzzer until a certain temperature or time delay is reached or you will have an annoying false alarm every morning.
It just seemed logical to assume that a clogged cooler would jack the pressure up on the feed side.
I have a thought: With the bypass eliminated all the fluid is going to go through the cooler, even in the dead of winter. You may need to put a temperature or time delay in that warning system that turns off the buzzer until a certain temperature or time delay is reached or you will have an annoying false alarm every morning.
Trending Topics
Thread Starter
|
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Postmaster
Joined: Nov 2003
Posts: 3,595
Likes: 0
From: Utah County, UT
All i can say is make the LED flash rapidily so as to get you attention. if you are good with electronic look up 555 timer. Fairly simple to make and you can adjust the flash rate to what you want
Thread Starter
|
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Been using -555's and -6's since the dawn of time. Actually, since the mid-'70's or so.
Great chip that has a LOT of uses. Timers, oscillators, missing pulse detectors, etc. They are still produced, to this day!
I still dig into an old dog-eared Forrest Mims book once in a while for ideas.
Pop
Great chip that has a LOT of uses. Timers, oscillators, missing pulse detectors, etc. They are still produced, to this day!
I still dig into an old dog-eared Forrest Mims book once in a while for ideas.
Pop
Elder User
Joined: Sep 2006
Posts: 852
Likes: 0
From: ARIZONA
fyi, a friend of mine had a problem with his bypass while towing 7K. tranny overheated about every 20 min or so, and had to let it sit for about 45 min in order to get it home, now i dont recall what the issue exactly was, (maybe bypass switch or something) but he replaced the part and no more problem,
Lead Driver
Joined: Oct 2004
Posts: 7,413
Likes: 1
From: Columbia, MO
I would tend to agree with Kris, and keep it. Like he said, hot fluid is better than no fluid. If the cooler clogs or your filter clogs & the filter bypass fails, and you lose fluid flow, the transmission would likely suffer damage in a short time. A pressure warning switch may just alert you to the damage done. At least if the bypass fails, your trans temp gauge will give ample warning that the fluid is getting hot before major damage is done. Plus, how many bypass tubes have we heard of failing?
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
So I have a six speed transmission with a factory ATF cooler that runs to the bottom of the radiator. There is no bypass valve installed.
Before we shoot down Pop's idea of getting rid of the bypass valve answer me this question. How long have bypass valves been installed on automatics.
If for not very long, then what happened before that?
Before we shoot down Pop's idea of getting rid of the bypass valve answer me this question. How long have bypass valves been installed on automatics.
If for not very long, then what happened before that?
Thread Starter
|
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Kwik,
That's the question I originally asked, and the reason it seems to be a possibly unnecessary complication. A lot of downside for only a little benefit. The upside is the tranny comes up to operating temp faster. That might make sense if I lived in Alaska or Minnesota. I'm in SoCal!
Since I don't have a trans temp gauge, the instant pressure builds up in that cooler line that's beyond the pre-set limit of the pressure sensor switch, I'll know it. Much faster than a temp gauge, and no harm done to the trans as a result.
Pop
That's the question I originally asked, and the reason it seems to be a possibly unnecessary complication. A lot of downside for only a little benefit. The upside is the tranny comes up to operating temp faster. That might make sense if I lived in Alaska or Minnesota. I'm in SoCal!
Since I don't have a trans temp gauge, the instant pressure builds up in that cooler line that's beyond the pre-set limit of the pressure sensor switch, I'll know it. Much faster than a temp gauge, and no harm done to the trans as a result.
Pop
Last edited by SpringerPop; May 8, 2007 at 10:25 PM.