Author Topic: Transmission stall  (Read 8312 times)

munch

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Transmission stall
« on: March 03, 2017, 12:50:30 PM »
I can warm my car up but when I drive it the first stop I come to, it will stall.  If I continue to drive it, the problem goes away.  Any ideas?

sammons

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Re: Transmission stall
« Reply #1 on: March 03, 2017, 04:22:41 PM »
Munch I don't know squat about most GM autos. My old Camaro(TH350) had a small leak at the dipstick when parked several days and if it was cold it would stall a bit at 1st couple stops. Usually at 3/4 qt low, top off and would be fine.
One of my 727 mopars did same and it was a week pump. On them also, the pump would not circulate if in park, so cold they would stall 2-3 seconds till fluid warmed/circulated.(I don't think GM had that falt) Had my buddy drill a passage(trans go kit) in my later trans to circulate in park

EDNY

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Re: Transmission stall
« Reply #2 on: March 03, 2017, 04:55:56 PM »
Munch...is this the car you just installed EFI on? Which transmission do you have (is it a lock up)
33 Chevy 5 Window, 34 Chevy 3 Window, 37 Chevy 4dr sedan

munch

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Re: Transmission stall
« Reply #3 on: March 04, 2017, 04:01:15 PM »
Yes it is, I was taking it out this keep happening.  It is a 200R4  not built long ago.  It stops after driving it some, but it shifts through the gears fast unless you are getting on it.  I thought it was suppose to shift at certain speeds'  I don't have the normal TV cable but a Bowler Trushift.

EDNY

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Re: Transmission stall
« Reply #4 on: March 04, 2017, 07:36:55 PM »
Yes it is, I was taking it out this keep happening.  It is a 200R4  not built long ago.  It stops after driving it some, but it shifts through the gears fast unless you are getting on it.  I thought it was suppose to shift at certain speeds'  I don't have the normal TV cable but a Bowler Trushift.


Have you seen this video:

https://www.youtube.com/watch?v=zLTVxSS_Jxc


33 Chevy 5 Window, 34 Chevy 3 Window, 37 Chevy 4dr sedan

munch

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Re: Transmission stall
« Reply #5 on: March 06, 2017, 08:15:53 AM »
Yes it is, I was taking it out this keep happening.  It is a 200R4  not built long ago.  It stops after driving it some, but it shifts through the gears fast unless you are getting on it.  I thought it was suppose to shift at certain speeds'  I don't have the normal TV cable but a Bowler Trushift.

Not that particular one, but that is how I went about setting mine up.  The FiTech EFI is running but I have not fully tested it as the I became curious about the trans and the mufflers I put on are deafening. 


Have you seen this video:

https://www.youtube.com/watch?v=zLTVxSS_Jxc

themoose

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Re: Transmission stall
« Reply #6 on: March 06, 2017, 09:03:01 AM »
Quote
Yes it is, I was taking it out this keep happening.  It is a 200R4  not built long ago.  It stops after driving it some, but it shifts through the gears fast unless you are getting on it.  I thought it was suppose to shift at certain speeds'  I don't have the normal TV cable but a Bowler Trushift.

The Bowler system seems a little simplistic in it's description of how the system on you transmission works. I have always use Bowtie Overdrives system with excellent luck . It allows the adjustment of shift points by giving you the ability to actually adjust the geometry of the cable as it rides over it's ramp. Setting the starting point of the throttle valve travel by just using wide open throttle to set the cable doesn't take into consideration any discrepancy's that might exist internally in the valve body that might affect the valve position. I also always use a pressure gauge to set the system up. If you want to take some time and educate yourself on the system take a look at the three part explanation posted on the Bowtie Overdrive site I've posted below. Another thought...Are you using a lock up converter??

Part 1
Part 2
Part 3
Too soon we get old too late we get smart. One out of two ain’t bad 8)

munch

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Re: Transmission stall
« Reply #7 on: March 06, 2017, 12:20:29 PM »
Quote
Yes it is, I was taking it out this keep happening.  It is a 200R4  not built long ago.  It stops after driving it some, but it shifts through the gears fast unless you are getting on it.  I thought it was suppose to shift at certain speeds'  I don't have the normal TV cable but a Bowler Trushift.

The Bowler system seems a little simplistic in it's description of how the system on you transmission works. I have always use Bowtie Overdrives system with excellent luck . It allows the adjustment of shift points by giving you the ability to actually adjust the geometry of the cable as it rides over it's ramp. Setting the starting point of the throttle valve travel by just using wide open throttle to set the cable doesn't take into consideration any discrepancy's that might exist internally in the valve body that might affect the valve position. I also always use a pressure gauge to set the system up. If you want to take some time and educate yourself on the system take a look at the three part explanation posted on the Bowtie Overdrive site I've posted below. Another thought...Are you using a lock up converter??

Part 1
Part 2
Part 3









thanks Moose, this is very interesting.  I originally went to the Bowler setup because the Gentleman that built my transmission past away and it was not shifting properly.  I didn't understand how to set it up and found the Bowler solution when searching.  Bowler is telling me to reset it and do a WOT from the accelerator pedal and not at the linkage. If that doesn't  correct it, I am dealing with the wrong governor.

I could try and go back to the tv system and try to set. but like I said earlier I was having problems then.  Perplexed...

EDNY

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Re: Transmission stall
« Reply #8 on: March 06, 2017, 10:54:03 PM »
Is the trans using the lock-up feature?  If so, can you try disabling power to it just to check for a sticky lock up solenoid?
33 Chevy 5 Window, 34 Chevy 3 Window, 37 Chevy 4dr sedan

munch

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Re: Transmission stall
« Reply #9 on: March 07, 2017, 08:35:20 AM »
Is the trans using the lock-up feature?  If so, can you try disabling power to it just to check for a sticky lock up solenoid?

Yes Ed, it does.  What should happen when I disconnect power?

munch

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Re: Transmission stall
« Reply #10 on: March 07, 2017, 11:41:36 AM »
I read somewhere about the brake switch controlling the lockup.  I changed my brake switch in the brake line with a manual one beneath the pedal, did I mess up.  So many things and so confusing.  I'm sticking with it, no matter what.

munch

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Re: Transmission stall
« Reply #11 on: March 07, 2017, 04:04:11 PM »
Is the trans using the lock-up feature?  If so, can you try disabling power to it just to check for a sticky lock up solenoid?

Yes Ed, it does.  What should happen when I disconnect power?
I found this

http://www.montecarloss.com/TCC_Solenoid.html

EDNY

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Re: Transmission stall
« Reply #12 on: March 07, 2017, 07:57:54 PM »
Is the trans using the lock-up feature?  If so, can you try disabling power to it just to check for a sticky lock up solenoid?

Yes Ed, it does.  What should happen when I disconnect power?
I found this

http://www.montecarloss.com/TCC_Solenoid.html


If you disable it the lock up solenoid won't work and the torque converter won't lock up...that's all.  It would be worth seeing if the tranny functions properly for a short time.

From what I understand with the 700R4 is that the transmission has a constant 12v power supply (with directional diode) that runs from the power source to the brake pedal switch (closed position) then into the transmission. The tranny via a hydraulic pressure switch powers the TTC solenoid - locking the torque converter.

When you apply the brakes, the pedal switch goes open circuit cutting off the TTC solenoid power which in turn unlocks the torque converter so the car won't stall when applying brakes.

If you cut the transmission power and the cars drives fine....you'll know that the problem is in the power to lock up somewhere.

BUT: we don't know for sure it's a tranny problem..but we need to start somewhere.
« Last Edit: March 07, 2017, 07:59:33 PM by EDNY »
33 Chevy 5 Window, 34 Chevy 3 Window, 37 Chevy 4dr sedan

munch

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Re: Transmission stall
« Reply #13 on: March 07, 2017, 08:32:53 PM »
Is the trans using the lock-up feature?  If so, can you try disabling power to it just to check for a sticky lock up solenoid?

Yes Ed, it does.  What should happen when I disconnect power?
I found this

http://www.montecarloss.com/TCC_Solenoid.html


If you disable it the lock up solenoid won't work and the torque converter won't lock up...that's all.  It would be worth seeing if the tranny functions properly for a short time.

From what I understand with the 700R4 is that the transmission has a constant 12v power supply (with directional diode) that runs from the power source to the brake pedal switch (closed position) then into the transmission. The tranny via a hydraulic pressure switch powers the TTC solenoid - locking the torque converter.

When you apply the brakes, the pedal switch goes open circuit cutting off the TTC solenoid power which in turn unlocks the torque converter so the car won't stall when applying brakes.

If you cut the transmission power and the cars drives fine....you'll know that the problem is in the power to lock up somewhere.

BUT: we don't know for sure it's a tranny problem..but we need to start somewhere.
Thanks Ed, I have to do some work for my brother, but hope to be able to test it soon.  Will definitely let everyone know.

munch

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Re: Transmission stall
« Reply #14 on: March 28, 2017, 02:33:12 PM »
Is the trans using the lock-up feature?  If so, can you try disabling power to it just to check for a sticky lock up solenoid?

Yes Ed, it does.  What should happen when I disconnect power?
I found this

http://www.montecarloss.com/TCC_Solenoid.html

Ed,
Sorry it has taken so long, but I did disconnect the 12v to the trans and drove it. Same stall almost when stopping until warmed up.  It shifts so fast it bogs the motor. Don't understand how the wiring works, no connection to a brake switch.  Wired switched 12v to the left  side of the Trans to a duel prong connector, then the other side runs the right side and connects right behind the shift lever.  Look at pics.  I am way over my head and frustrated.  I can't even drive it to set up the EFI.


If you disable it the lock up solenoid won't work and the torque converter won't lock up...that's all.  It would be worth seeing if the tranny functions properly for a short time.

From what I understand with the 700R4 is that the transmission has a constant 12v power supply (with directional diode) that runs from the power source to the brake pedal switch (closed position) then into the transmission. The tranny via a hydraulic pressure switch powers the TTC solenoid - locking the torque converter.

When you apply the brakes, the pedal switch goes open circuit cutting off the TTC solenoid power which in turn unlocks the torque converter so the car won't stall when applying brakes.

If you cut the transmission power and the cars drives fine....you'll know that the problem is in the power to lock up somewhere.

BUT: we don't know for sure it's a tranny problem..but we need to start somewhere.

 


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