4l65e smokes from vent tube? issue
4l65e smokes from vent tube? issue looks like my vent tube doesn't have a hose connected to it, car smokes when i WOT it and smells like tranny fluid
. do i need a hose connected to it or can i just block off the vent tube?
car is a fox body ls swap.
. do i need a hose connected to it or can i just block off the vent tube? car is a fox body ls swap.
TECH Junkie
Joined: May 2012
Posts: 3,051
Likes: 716
From: Poplarville, MS
No you can’t bock off the vent.
The 4 gen F Bodies have a piece of tubing running down and tied off the toque arm behind the trans. That gets the fluid away from the exhaust some. Fluid will come out of the vent if the trans is over filled or if it gets too hot. I also remember reading on here somewhere about a redesign GM made to the trans pump to help stop fluid from coming out the vent.
Think GM designed it this way to help prevent rust from forming under our cars.
The 4 gen F Bodies have a piece of tubing running down and tied off the toque arm behind the trans. That gets the fluid away from the exhaust some. Fluid will come out of the vent if the trans is over filled or if it gets too hot. I also remember reading on here somewhere about a redesign GM made to the trans pump to help stop fluid from coming out the vent.
Think GM designed it this way to help prevent rust from forming under our cars.
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Hook up a scanner that can read trans temperature for your WOT tests. I suspect something is slipping and producing a lot of heat. Note that localized heat from e.g. one slipping clutch could cause your symptom, without heating the entire trans all that much.
Questions:
1. Is this a stock trans?
2. Do you have an external cooler on it? (If no, get one!)
3. Are you locking the TCC at WOT? (If yes, that is a no-no)
Questions:
1. Is this a stock trans?
2. Do you have an external cooler on it? (If no, get one!)
3. Are you locking the TCC at WOT? (If yes, that is a no-no)
No you can’t bock off the vent.
The 4 gen F Bodies have a piece of tubing running down and tied off the toque arm behind the trans. That gets the fluid away from the exhaust some. Fluid will come out of the vent if the trans is over filled or if it gets too hot. I also remember reading on here somewhere about a redesign GM made to the trans pump to help stop fluid from coming out the vent.
Think GM designed it this way to help prevent rust from forming under our cars.
The 4 gen F Bodies have a piece of tubing running down and tied off the toque arm behind the trans. That gets the fluid away from the exhaust some. Fluid will come out of the vent if the trans is over filled or if it gets too hot. I also remember reading on here somewhere about a redesign GM made to the trans pump to help stop fluid from coming out the vent.
Think GM designed it this way to help prevent rust from forming under our cars.
Hook up a scanner that can read trans temperature for your WOT tests. I suspect something is slipping and producing a lot of heat. Note that localized heat from e.g. one slipping clutch could cause your symptom, without heating the entire trans all that much.
Questions:
1. Is this a stock trans?
2. Do you have an external cooler on it? (If no, get one!)
3. Are you locking the TCC at WOT? (If yes, that is a no-no)
Questions:
1. Is this a stock trans?
2. Do you have an external cooler on it? (If no, get one!)
3. Are you locking the TCC at WOT? (If yes, that is a no-no)
1.yes trans is stock
2.yes I have a trans cooler
3.not sure but the last time they ck it with hptunes think they said it did lock at WOT.
But the car is not running how it should might be beacuse i need a tune...
Here is what I suggest. Get a length of hose and push onto your vent pipe. Pull the dipstick and have a buddy blow compressed air in the vent hose while you listen for air coming from the dipstick tube. It may take a lot of air. Post results so we can go from there.
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
...Is there a electric gauge I can you for the trans temp?
1.yes trans is stock
2.yes I have a trans cooler
3.not sure but the last time they ck it with hptunes think they said it did lock at WOT.
But the car is not running how it should might be beacuse i need a tune...
1.yes trans is stock
2.yes I have a trans cooler
3.not sure but the last time they ck it with hptunes think they said it did lock at WOT.
But the car is not running how it should might be beacuse i need a tune...
Running lockup at WOT is very likely to slip the TCC unless you have a $1000+ triple disk converter. This could be causing the heat. You really want to know for sure how it is tuned. See this current thread:
https://ls1tech.com/forums/automatic...ockup-not.html
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The temperate sensor in the trans which reports to the PCM is plenty accurate.
Running lockup at WOT is very likely to slip the TCC unless you have a $1000+ triple disk converter. This could be causing the heat. You really want to know for sure how it is tuned. See this current thread:
https://ls1tech.com/forums/automatic...ockup-not.html
Running lockup at WOT is very likely to slip the TCC unless you have a $1000+ triple disk converter. This could be causing the heat. You really want to know for sure how it is tuned. See this current thread:
https://ls1tech.com/forums/automatic...ockup-not.html
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Verdad Gallardo Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
You re-posted you last post as a new thread:
https://ls1tech.com/forums/automatic...2-3-gears.html
So, lets continue there with that question.
https://ls1tech.com/forums/automatic...2-3-gears.html
So, lets continue there with that question.