Lost Tranny or converter? Update 9/8/15

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Post  Tore on August 23rd 2015, 11:59 am

I rolled car out of trailer and fired it up, put it in rev nothing, put it in low to move forward nothing. Tried again and had to really rev the engine up to get it to move either way. Not low on fluid, Its a C6.

Which can it be?


Thanks Tore


Last edited by Tore on September 8th 2015, 4:13 pm; edited 1 time in total
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Post  Tore on August 23rd 2015, 7:41 pm

Tore wrote:I rolled car out of trailer and fired it up, put it in rev nothing, put it in low to move forward nothing. Tried again and had to really rev the engine up to get it to move either way. Not low on fluid, Its a C6.

Which can it be?


Thanks Tore

Just went out and tried the tranny and I don't have any movement in any gear unless I really rev it up.
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Post  bbf-falcon on August 23rd 2015, 10:40 pm

Anyones guess Tore, might as well get Bev out there and pull the tranny. Crying or Very sad

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Post  Frank Merkl on August 23rd 2015, 11:06 pm

Pressure test before removal ,could just be a stuck pressure valve in the vb
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Post  Tore on August 24th 2015, 6:38 am

Frank Merkl wrote:Pressure test before removal ,could just be a stuck pressure valve in the vb


frank

Frank

What should pressure read in what gears? OR in neutral? And if it is that how do you fix that?

Thanks Tore
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Post  Tore on August 24th 2015, 6:39 am

bbf-falcon wrote:Anyones guess Tore, might as well get Bev out there and pull the tranny. Crying or Very sad

Shes semi retired now so she could do it. I will pass that along to her. Cool
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Post  Tore on August 24th 2015, 6:47 am

Tore wrote:
Frank Merkl wrote:Pressure test before removal ,could just be a stuck pressure valve in the vb


frank

Frank

What should pressure read in what gears? OR in neutral? And if it is that how do you fix that?

Thanks Tore

It ran fine all night Friday. I unloaded it yesterday and no go.
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Post  supervel45 on August 24th 2015, 7:18 am

http://www.429-460.com/t23174-burned-direct-third-clutchs-on-my-c6 Read the first post, pretty standard pressures for a shift kit type valve body. You will have to pull the valve body and remove the boost valve if it is stuck.

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Post  Tore on August 24th 2015, 7:26 am

supervel45 wrote:http://www.429-460.com/t23174-burned-direct-third-clutchs-on-my-c6                                                                                                                Read the first post, pretty standard pressures for a shift kit type valve body. You will have to pull the valve body and remove the boost valve if it is stuck.

I have no idea what a boost valve is or where its located in the VB. This is one of Frank's Valve bodies I am running.

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Post  supervel45 on August 24th 2015, 7:34 am

The old style valve bodies have a plate with two bolts holding the valve in. The late valve bodies have a clip, and you have to seperate the halves to remove it. I would do your pressure checks first and record them. Then take the pan off and see what's in the bottom, and go from there.

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Post  Tore on August 24th 2015, 7:37 am

supervel45 wrote:The old style valve bodies have a plate with two bolts holding the valve in. The late valve bodies have a clip, and you have to seperate the halves to remove it. I would do your pressure checks first and record them. Then take the pan off and see what's in the bottom, and go from there.

I think I remember seeing a plate with 2 small bolts on the top of the valve body. I guess that's what we will do 1 night this week.

Thanks Tore
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Post  supervel45 on August 24th 2015, 7:43 am

Good luck with it, and hopefully it is something simple and cheap to fix. PS: It's not the plate on the top, it's on the side if it has one.

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Post  manofmerc on August 24th 2015, 11:53 am

You need to do a pressure test before pulling your c6 .If the pressure is low maybe the boot valve is sticking and you can fix the valve body instead of removing the trans.That is what Frank wants you to do .You need a gauge made to test transmissions it should read to 300 lbs .Along with a hyd. hose that can handle high pressures too.Doug

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Post  Tore on August 24th 2015, 12:15 pm

manofmerc wrote:You need to do a pressure test before pulling your c6 .If the pressure is low maybe the boot valve is sticking and you can fix the valve body instead of removing the trans.That is what Frank wants you to do .You need a gauge made to test transmissions it should read to 300 lbs .Along with a hyd. hose that can handle high pressures too.Doug

I have a gage that reads that high. Just need another body to read it while I run it thru the gears. The port for that is on the D/S of the tranny correct?

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Post  supervel45 on August 24th 2015, 12:57 pm

Control pressure is on the drivers side in front of shift lever, throttle pressure is on passenger side behind servo piston. Take readings at both points. When you talk to Frank he can narrow it down to the throttle valve, or other problems in the valve body easier.

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Post  butterbean on September 2nd 2015, 2:24 pm

up date
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Post  Tore on September 3rd 2015, 1:18 pm

butterbean wrote:up date

No update yet as I haven't had time to get out in the barn. Hopefully this weekend I can post some results.


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Post  Tore on September 8th 2015, 4:11 pm

I finally got a reading but its off the D/S port as I have to lower the tranny to get the shield off for access to the plug.

All reading taken at 1200 rpm

P 170 Pds
R 140
N 170
L 150
2 150
D 150

Any ideas guys???
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Post  supervel45 on September 8th 2015, 7:52 pm

None that you want to hear. I will let Frank call it.

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Post  Frank Merkl on September 9th 2015, 12:41 am

pressure test are about right , time to put the trans and inspect
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Post  Tore on September 9th 2015, 8:09 am

Thanks Frank




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