Author Topic: Transmission stall  (Read 8315 times)

EDNY

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Re: Transmission stall
« Reply #30 on: March 30, 2017, 03:55:25 PM »
OK...it appears that the kit uses transmission pressure to lock/unlock the tranny.  You need to check the transmission pressure like they say, but you could also hook up a test light or better yet voltmeter to the line from the 2 prong switch to the square plug and drive the car.

Cruising you should have 12v when tranny locks, if not;

pressure is low -or-
bad switch -or-
no power from fuse block (blown fuse?)

If you do have a 12 volt signal you should feel it lock up, if not the solenoid inside the tranny is probably faulty.

Best initial test is to make sure you have 12 volts entering the two prong switch with key on (not running) just in case it's just a blown fuse.

Looking at the pictures I'd also check that taped connection at the square pin connector.
« Last Edit: March 31, 2017, 07:30:31 AM by EDNY »
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munch

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Re: Transmission stall
« Reply #31 on: March 31, 2017, 08:20:58 AM »
Thanks, I hope to test both this weekend and will let you know.

themoose

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Re: Transmission stall
« Reply #32 on: March 31, 2017, 09:19:29 AM »
Been following this thread for a while and it looks like you've been getting a lot of good advice on how to pinpoint a lock up problem. One question comes to mind. Over the years I experienced dozens of problems with the tcc solenoid and pressure switches  and internal issues with the torque converter not unlocking on 2004R and 700R4's causing a stall when coming to a stop. In all of these cases the car would shake pretty violently as if it were a car with a standard transmission you came to a stop without putting the clutch in. I was wondering if this is one of the symptoms you were experiencing. 
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 #33 on: March 31, 2017, 01:14:01 PM »
Been following this thread for a while and it looks like you've been getting a lot of good advice on how to pinpoint a lock up problem. One question comes to mind. Over the years I experienced dozens of problems with the tcc solenoid and pressure switches  and internal issues with the torque converter not unlocking on 2004R and 700R4's causing a stall when coming to a stop. In all of these cases the car would shake pretty violently as if it were a car with a standard transmission you came to a stop without putting the clutch in. I was wondering if this is one of the symptoms you were experiencing.

Yes Moose it is, but after driving it that condition lessons.  Now I can't sat for sure now since I have not driven it that far with the stacked shifting problem.  Last year I took a little trip, 200 miles, and it worked great.  Did not stagger at a stop after it was driven some(warmed up).  In and out of overdrive fine.  Always shifted to fast for me, but nothing I could not deal with.
Then I put it of the lift and did a four link, ordered and installed the Fitech EFI and did the plumbing and in-tank fuel pump.  All which dragged out about 8 months.  I did check with Bowler about supporting the Fitech unit since I was using their Tru-shift product, and they sent me one part to replace. Now I get ready to drive it and let the EFI set up and I have these staggering at a stop problems and fast shifting.

I hope to locate a pressure gauge this weekend and report on the results.

  Thanks 

FATnLOW

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Re: Transmission stall
« Reply #34 on: March 31, 2017, 07:20:36 PM »

I have TH350c which has a lock up converter and I used a duel contact brake switch to unlock mine.
[/quote]

62131...can you send  what and how you wired  tranny lock up converter.....what and how is it engaged and disengaged....thanks

62131

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Re: Transmission stall
« Reply #35 on: March 31, 2017, 09:22:03 PM »
I'll have to find my wiring diagram, but I used a relay and a illuminated momentary switch mounted in the dash along with a duel contact brake switch, when wanting to lock up the converter after reaching cruising speed I push the switch it latches the relay illuminating the switch indicating lockup and sending 12v to the solenoid, then stepping on the brake it releases the relay turning off the light and removing the 12v signal.  Pretty simple setup. My information is in the garage I'll send it to you tomorrow.

FATnLOW

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Re: Transmission stall
« Reply #36 on: March 31, 2017, 09:50:18 PM »
Thanks a lot...

62131

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Re: Transmission stall
« Reply #37 on: April 01, 2017, 02:40:10 PM »
I'll have to find my wiring diagram, but I used a relay and a illuminated momentary switch mounted in the dash along with a duel contact brake switch, when wanting to lock up the converter after reaching cruising speed I push the switch it latches the relay illuminating the switch indicating lockup and sending 12v to the solenoid, then stepping on the brake it releases the relay turning off the light and removing the 12v signal.  Pretty simple setup. My information is in the garage I'll send it to you tomorrow.

Couldn't find my original drawing  I think this is how it's wired it.

munch

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Re: Transmission stall
« Reply #38 on: April 03, 2017, 06:18:44 PM »
I haven't forgot, I could not find a pressure gauge to borrow so I had to order one.  Can someone give me some pointers of what to look for?

Thanks

EDNY

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« Last Edit: April 04, 2017, 07:56:07 AM by EDNY »
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FATnLOW

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Re: Transmission stall
« Reply #40 on: April 04, 2017, 08:26:04 AM »
Does any one have a list of  GM part  number and parts names to hook up lock up converter  as it came factory on these transmission??  Wanting  to  weigh the options..function , cost , and reliability of  both options......and also  never used one of these trannys  so its a learning curve for me.... :-\.....gonna be  needing a bunch of help  as getting  motor built now and  wanting to get it installed asap....has anyone used the  telfon/ braided hose kit wit AN fitting to plumb transmission to  cooler???.....Tom gonna need  a lot of info from you ;D..hope you don't mind

62131

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Re: Transmission stall
« Reply #41 on: April 04, 2017, 05:08:57 PM »
I have them will just have to locate it   I used it on my fuel lines. Check out ANfittings.com they are very reasonable and very good assortment seems to be good quality and easy to assemble
« Last Edit: April 04, 2017, 05:16:42 PM by 62131 »

62131

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Re: Transmission stall
« Reply #42 on: April 04, 2017, 05:24:54 PM »
Here you go Fatnlow  vacuum switch 14032087     brake switch 25524845   vacuum check valve 14020691 the plug for the vacuum  switch plug is not available  and these are GM numbers  Hope this helps
« Last Edit: April 05, 2017, 06:29:09 AM by 62131 »

FATnLOW

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Re: Transmission stall
« Reply #43 on: April 04, 2017, 05:45:14 PM »
62131...Thanks    for info....gonna see what I can come up with.....

TFoch

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Re: Transmission stall
« Reply #44 on: April 04, 2017, 06:45:12 PM »
.....Tom gonna need  a lot of info from you ;D..hope you don't mind
I'll help you in any way I can Ed.
Tom
Spending time with my grandkids gets in the way of finishing my car but I don't regret it!

 


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