Convertor NOT Unlocking

[SmokeShow]

What are some things to check for a convertor NOT unlocking or taking too long to unlock when coming to a stop?


A recap of events: Busted bell housing, pulled trans to replace and found the rear engine cover cracked so replaced it as well. Got it all back together and the bellhousing is from an 03+ so my 02 lines wouldn't fit in the 03+ fittings and my fittings wouldn't fit in the 03+ bell. I remembered MikeL mentioning he had the cure and sure enough, he hooked me right up. So truck is back up n running. I haven't actually driven it, the guy working on it knows his way around these trucks pretty well and he's the one relaying this message to me. For the record, it didn't do this ever before all this work, not even when the alli. was almost in two pieces from the busted bell.


I thought it kinda seems like an elec. situation and asked if he triple checked all elec. connections and he says he has and doesn't think it's elec. He's second guessing his work and wondering if he might have put the gasket between the bell and alli on backwards or something and it's restricting flow to something not allowing it to unlock. He doesn't have a TechII but does have EFI Live. Can he check with EFI Live to see if the TCM is calling for an unlock and it's just not able to physically do it (I would think if that happened it would throw a code for something??) or if it's just never sending the signal to unlock?



TIA :hug:

 

[duratothemax]

log TCC duty cycle % with the tech 2 and see what it says. Should be 0% at idle in park/drive...

maybe a draggy converter flow valve or stuck tcc valve in the valve body. Seeing as it did it right after he put it back together im inclined to think its not an electrical problem.

 

[SmokeShow]

Thanks Ben.

fwiw, valve body wasn't removed. just took out trans, took off bellhousing and replaced with a new (to me but still used) one then reinstalled the trans.


C-ya

 

[Mike L.]

I'm betting on the converter flow valve sticking from dirt or miss-positioned gasket on bell housing. gaskets are not crossed as that would give you a no move situation. call me if you need me.

 

[duratothemax]

Thanks Ben.

fwiw, valve body wasn't removed.

Mitch I was referring to the converter flow valve which is in the front pump, as Mike said.

ben

 

[SmokeShow]

Thanks guys.... I'll pass info. along and go from there. It'll probably be next week before my truck gets looked at again. Big three-day pull this weekend (Thurs-Sat) and he's a puller so he's busy.


C-ya

 

[SmokeShow]

Finding there are two diff gaskets. If one is incorrect gasket, could it cause this?

 

[Mike L.]

Finding there are two diff gaskets. If one is incorrect gasket, could it cause this?

There is a front and rear gasket. Crossing them causes no move situation.

 

[SmokeShow]

Guy has it back apart and says "everything looks good". Great! Was kind hoping a grain of sand was in there grinning at him when he got it back apart. :lol:

Next line of questions... What next? What's a proper way to clean up said convertor flow valve? Any way to check it's functionality prior to reassembly?

TIA gents. :hug:

 

[Mike L.]

Guy has it back apart and says "everything looks good". Great! Was kind hoping a grain of sand was in there grinning at him when he got it back apart. :lol:

Next line of questions... What next? What's a proper way to clean up said convertor flow valve? Any way to check it's functionality prior to reassembly?

TIA gents. :hug:

Call me

 

[SmokeShow]

Can I just have him call you, Mike? He'll likely be able to better answer any questions or explain things better.


Thanks bud!
Mitch

 

[Mike L.]

Can I just have him call you, Mike? He'll likely be able to better answer any questions or explain things better.


Thanks bud!
Mitch

Absolutely. I'll help him.

 

[SmokeShow]

Thanks so much Mike!!

He tried the shop to no avail. Since you have it posted publicly, I also gave him your cell. I haven't heard back from him since I gave him the cell # so maybe he got through to you?

 

[SmokeShow]

If I understand right, you all have talked and now my guy says he thinks it's the convertor. If that's the concensus, I think I'll go jump offa cliff now....

 

[Mike L.]

If I understand right, you all have talked and now my guy says he thinks it's the convertor. If that's the concensus, I think I'll go jump offa cliff now....

I'm not convinced it's the converter. It is rare for a converter to do this unless too long of a bolt was inserted in the cover. He says not.
Whos converter?

 

[SmokeShow]

First off, thank you very much for lending a helping hand! I really appreciate it because I'm really at my whit's end with the stupid truck.

I bought the transmission from Merchant as an SCIII. He built the trans. and shipped it to my installer who then crated up my fried trans. and sent it back to Eric. The torque convertor went straight to the installer from SunCoast. It isn't a 1057 but rather something that was typically recommended for regular street trucks not competing, racing, or pulling. I can't remember what model number it is though. That was at least 3 years ago with no real issues to speak of, at least not as far as the convertor function is concerned.

As far as I know, and against some of yalls advise, the convertor bolts that were in it when he took it out, we re-used when it went back in and things were fine before with them in it so I'm pretty sure longer bolts weren't used unless someone accidently grabbed the wrong ones or something.


He said you mentioned blowing out the cooler lines to be assured there is no blockage.


Thanks bunches! :beer

 

[SmokeShow]

Well, he says everything looks good and like it should. He can't find anything else wrong whatsoever. He's convinced the conv. is toast but I just can't see how it would just stop unlocking for no reason when it was working fine before.

I'm not satisfied with just buying a new conv. or even sending that one off to be rebuilt (if that's even possible) without knowing for sure it's the problem. So, he's got a used ATS 5-star he's going to throw in it and see if it acts right in hopes of confirming my conv. is good or bad.

If the 5-star works right and it's verified that mine is bad, can it be rebuilt? If so, does SunCoast have to rebuild it or can someone else like Precision via Mike do it?



Thanks for the help! :hug:

 

[Mike L.]

Precision can do it.

 

[SmokeShow]

do I go direct to Precision or need to go through a dealer of theirs such as yourself?

 

[Mike L.]

You can go direct. I would suggest talking to Terry first to let him know what your problem is.