[elky] Re: Monte - Lockup
- From: Robert Adams <elcam84@xxxxxxxxx>
- To: elky@xxxxxxxxxxxxx
- Date: Sat, 4 Dec 2010 19:50:34 -0600
Well you don't have the valve body controlled lockup. I
have never heard anything say anything about removing a spring in the tcc
valve train. Just one valve and it's a long spool valve in the valve body
which the TCC solenoid goes up against.
As for the solenoid the TCC is a two wire on your Monte.
If it feels like it's locking up press the brake
just enough to get the brake lights to come on. This will cut power to the
solenoid. If it's still locked up then there is something wrong internally.
Either a bad TCC solenoid worn TCC valve etc.
With any TCC not unlocking with a 2004r you can
first try to replace the solenoid. If the problem is still there then the
TCC valve bore is worn and the solenoid can't exhaust enough fluid and some
of it ends up going to the TCC and causing it to lockup. Worn TCC valves are
very common on 2004rs and 700r4s. There is a replacement valve with a teflon
seal that fixes it. I think I still have one. Often a new TCC solenoid
bandaids the problem because it is made to exhaust more fluid than the stock
one.
So... Many times the stock solenoid works just fine
it's actually the valve leaking too much fluid and the new design solenoid
fixes it (sort of).
Robert Adams
On Sat, Dec 4, 2010 at 7:32 PM, John Christensen <johncgg@xxxxxxxxx> wrote:
> Chris sent the lockup kit for the Monte and I installed it today. Tom came
> over and we took it for a test drive.
>
> At first it seemed to work as advertised. It locked up at the speed when
> the red LED turned to green. After driving a bit, and coming to a stop, it
> seemed to stay locked up. Then it was jumping in and out of lock. Even at
> 2nd and third gear. Something isn't right with it. There is an on/off switch
> on the unit. Pushing that to off didn't unlock it. What was odd, was that it
> would be unlocked, then lock in the lower gear. So it isn't stuck on, it is
> getting a completed circuit somehow, when it is not intended.
>
> I am thinking there are several things that could be causing this. In the
> instructions, it talks about a spring that needs to be removed in the valve
> body. This is for early models (before 89) that have the valve body
> controlled lock up. Anyone know about this? In the text, it mentions: Custom
> transmissioninstallations utilizing early models with valve body controlled
> lockup speed may requite some modification to operate correctly. locate the
> converter clutch valve train in the valve boday. Deactivate the converter
> clutch shift valve by trmoving the spring holding the valve train in the OFF
> position. This will allow the converter clutch shift valve to move to the ON
> position, and ensure that control pressure is always available at the
> converter clutch apply valve after the first gear shift. It may also be
> necessary to remove the pan to identify which kind of solenoid and wiring
> sceme is used on your particular unit.
>
> It also says there are 2 types of solenoids, one wire and 2 wire. The one
> wire needs only the + to go to the pin A. Where A is + and D is ground (I
> grounded the D pin). So maybe if i lift the ground on the case, it will
> work. Looks like I need to get in the pan to find out. I may have a picture
> of it when it was open and upside down on the bench. I'll have to check.
>
> I spoke to Ray on the phone, and he was suggesting that the 4th gear switch
> internally could be a type that is either normally open, or normally closed.
> Because the kit has a wire on the 4 pin connector that goes to a ground on
> the case, I am wondering if that is a conflict, and may be causing it to
> engage in the lower gears. I haven't tried it without the ground wire hooked
> up.
>
> I was unable to get together with B&M tech support. It's Monday through
> Friday. Next stop is the tech support on the web site. Tom offerd the lift
> at the school on Sunday, but I want to research it before tearing in to the
> pan.
>
> At least I know the lockup works. I don't think it is sticking, because it
> is sort of randomly engaging in 2nd and third when it has already
> disengaged. It is also locking with the LED showing red. So Ray may have
> something there on the grounding conflict.
>
> Just wanted to run this past everyone. I have wired the same kit on the
> 350C of the El Camino before going back to computer control, and it worked
> flawlessly for years. I have a feeling it is the ground on the case, or the
> spring in the valve body. I'll get it sorted out eventually.
>
> That was the automotive therapy for today.
>
> JC
> ---
> John Christensen
> 1984 El Camino "Elkenstein" 350 TBI
> NECOA #042 http://www.myelcamino.net
> Saint Charles, IL
> ---
> John Christensen
> 1984 El Camino "Elkenstein" 350 TBI
> NECOA #042 http://www.myelcamino.net
> Saint Charles, IL
>
>
>
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