Thread: Th350 experts needed....help!!!

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low1 froward clutch is on low cluch is locked so if you had rev you could get L1 ??governer is in back drivers side has a cap over it with a wire clip over it like a master . could be just some junk in the valve body or shifter is not adjusted try unhooking the shifter and trying the shift points by moving by hand

Originally Posted by pat mccarthy

low1 froward clutch is on low cluch is locked so if you had rev you could get L1 ??governer is in back drivers side has a cap over it with a wire clip over it like a master . could be just some junk in the valve body or shifter is not adjusted try unhooking the shifter and trying the shift points by moving by hand

Oh yeah. Pat, I know where you mean.........that domed deal on the drivers side. Ok, will do. Yes, the detents are in the right places, we have a Gennie shifter and watched it go through the detents and they line up perfectly.

I'll try that governor tomorrow night too. What still has me puzzled is that no fluid is coming out of the cooling lines at all, bone dry.

Don

Originally Posted by Itoldyouso

Oh yeah. Pat, I know where you mean.........that domed deal on the drivers side. Ok, will do. Yes, the detents are in the right places, we have a Gennie shifter and watched it go through the detents and they line up perfectly.

I'll try that governor tomorrow night too. What still has me puzzled is that no fluid is coming out of the cooling lines at all, bone dry.

Don

there is a line psi port that can be check if pump is working . governor and modulator control shift points by psi. a spool valve hanging open or no governor woud dump all line psi .but if you not pumping any trans oil then filter or front pump?

I wondered about the ability for a trans shop to hook up a gauge to some port, like you mention, Pat. Tomorrow I may go by one trans shop I see locally and pick their brain and see if I can slip some cash to one of their guys to stop at our shop and see what he can find. It has to be something dumb, like the TC not engaging. When we pulled the pan down everything inside there is really spotless and the gaskets all look new, so I think they did a good job on the transmission.

However, I told Dan some of the suggestions you guys have given us, and we will do those tomorrow night for sure. Also, Dan says to thank all of you for all the great suggestions and help. I appreciate it as well.

I think I am going to take up checkers..........how much trouble can that get you into????

Don

I've been trying to find any additional info I could on the internet and just found a thread on some forum where a guy has exactly the same problem we do....ie, no gears and no fluid going to cooler. He installed a second rebuilt trans and it did exactly the same thing. It was suggested that he may not have the tc seated all the way back to engage the pump tangs. The one poster said there are three clicks you need to make by spinning the tc. The first one engages the input shaft, the second one engages something else, and the third one engages the pump. He said it is easy to think you have all three engaged because the tc will clear the flexplate.

That is very much what a lot of you on here hinted at, so tomorrow night the tc will get unbolted and we will see what we have. Thanks again, all.

Don

Well, I feel for Danny, this is a definite morale stomper.

Early in the thread my thought was the same as Pat's first comment. Now I'm wondering if at any of the times the engine and trans were bolted together with the TC in there were the bolts used to draw the trans up to the mounting flange rather than it seating fully "on it's own". If so, the pump would have been damaged probably due to improper seating of the TC.

The second thought is that something (improperly located check ball, incorrectly installed circuit plate, some debris, lots of choices) is blocking fluid flow in the valve body. If it were just the pump a chance that could be done in the car, but unfortunately you'll more likely have to pull it out.

Sorry guys.

Don,
I'm not adding anything that has not already been said, but it really sounds like the tc did not get fully engaged with the pump before being bolted to the flexplate, and if you don't know for sure that's a first step. It's a bitter pill, but I don't see any way you're going to get to the bottom of this without pulling the transmission and either taking it to a shop, or bringing a tranny guy by your shop to provide some help getting it apart and diagnosed. Sorry for Dan, being so close to "done" only to run into this kind of problem.

Great comments and suggestions from everyone, thanks guys.

Yep, the fluid is full and has been. We filled the convertor before installing it. If there are any noises we can't hear them over the open headers, but I think there are none because everything is so smooth (well, lumpy, but smooth, if you know what I mean)

I'm leaning more and more toward the front pump..........either it is bad or not pumping because of the convertor not driving it. I called B and M and leveled with the tech guy that it isn't their transmission but it is their convertor and flexplate........they were very nice and helpful. He asked all the things you guys have asked, about prefilling the convvertor and transmission, how the convertor felt going in, etc. At the end he said to try running it for a while in neutral instead of park because sometimes they don't pump the same in park. He also said he felt the front pump was either dead or not being driven. He also said it was likely the front pump is now damaged.

Luckily, Dan put weatherpack electrical connections on every circuit in the car so we should be able to unplug the entire cab and pull it off without a lot of hassle. Not looking forward to that at all, but if our little tests tonight on the convertor don't pan out that is what will be happening. Stuff like steering box and column plus shifter will have to come out too, and the top will have to be removed so we can lift the body up with our gantry.

Thank you again to everyone for contributing such good ideas. I'll use all of those tonight when we drop the lower cover and mess with the convertor.

Don