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girraffe
04-29-2013, 09:58 AM
I'm stuck in the springs. My tranny is going out on me and need to get back to aurora. If ANYONE can help please call or text. 303-526-8411

Matt

timmbuck2
04-29-2013, 10:44 AM
calling...

girraffe
04-29-2013, 03:04 PM
Thanks for the call Tim. I got the truck home. Now. Does anyone want to come over and help me diagnose what's wrong with it??

L43dean
04-29-2013, 04:00 PM
What truck do you drive? What are the symptoms? It's good you made it home!

girraffe
04-29-2013, 06:11 PM
1hdt/a442f 80 series. It's the full hydraulic trams. I posted a thread up on mud too. But here is what's going on. When accelerating, the Trans studders significantly when it shifts between gears. It also starts acting like the torque converter is losing its grip after a few seconds. However I can put the truck into park and turn it off, the turn back on and accelerate slowly with no problems. After it gets up to 55-60 mph it will maintain speed for a couple minutes then "loses grip" and revs up again. Seems like decelerating causes it to "lose grip" too. When it "loses grip" all gears are affected and unable to accelerate in 1,2,3 or 4, motor just revs up. I think that's it but I'm happy to try any suggestions or investigate further questions. ANY help appreciated.

Matt

Crash
04-29-2013, 06:31 PM
1hdt/a442f 80 series. It's the full hydraulic trams. I posted a thread up on mud too. But here is what's going on. When accelerating, the Trans studders significantly when it shifts between gears. It also starts acting like the torque converter is losing its grip after a few seconds. However I can put the truck into park and turn it off, the turn back on and accelerate slowly with no problems. After it gets up to 55-60 mph it will maintain speed for a couple minutes then "loses grip" and revs up again. Seems like decelerating causes it to "lose grip" too. When it "loses grip" all gears are affected and unable to accelerate in 1,2,3 or 4, motor just revs up. I think that's it but I'm happy to try any suggestions or investigate further questions. ANY help appreciated.

Matt

I'm pretty sure that the A442F has an electric solenoid for torque converter lock-up. The FJ62's A440F was all hydraulic but not the A442F, if memory serves me well. You might want to check out the 3FE Yahoo list as there are quite a few 3FE 80 series guys there that know their stuff.

girraffe
04-29-2013, 07:03 PM
Yeah this is the jap spec hydraulic a442f. But electronics aside is there anyone in the area that could stop buy and give me a second opinion? I work from home so ill be here all day

girraffe
04-29-2013, 07:14 PM
So I started going through the A442f maintenance manual and noticed the the 3F torque converter stall speed is 1850 rpm and the 1H stall speed is 1900. Anyone see any adverse affects to using the 3F one if it fits?? Don't think the 1850 rpm would hurt as wholesale auto TC stall speed is something like 1700. I have a spre 3F A442trans and TC is why I'm asking.

rockrod
04-29-2013, 08:24 PM
Did you check the fluid level? Sometimes low fluid will cause the pump to cavitate and then you lose hydraulic pressure and the trans goes into neutral. Letting it sit for a bit allows time for the fluid to drain back, refill the pan and then you start the whole process over again when you drive for a bit.

girraffe
04-29-2013, 08:32 PM
That makes sense. The fluid smells bad so ill change and report back

girraffe
04-29-2013, 10:17 PM
Did the 6qt fluid change. No dice. Also opened up the inspection hole in front of the TC and the rattling noise is definitely coming from that region. I'm going to try this 3FE TC tomorrow, but before I do, are there any bearings, etc that might need replacing while I'm in there?

L43dean
04-29-2013, 10:55 PM
Was the old fluid level registering low before you changed it?

girraffe
04-30-2013, 04:28 AM
Was the old fluid level registering low before you changed it?

No, but it smelled really bad. I found a video of what my truck sounds like. It is doing exactly the same thing, only I can get it to catch sometimes...

http://m.youtube.com/watch?v=P1aYct7Rz60&feature=related

rockrod
04-30-2013, 08:04 AM
It's possible the flex plate broke and is no longer driving the converter and front pump. This usually results in no motion at all since the trans cannot engage due to lack of hydraulic pressure. It could also be an issue with the pump and/or the drive tangs on the converter that engage the pump. If those have been damaged they could be slipping intermittently and causing the issue. Burned fluid means something is slipping. I think an overhaul is in your future.

Squishy!
04-30-2013, 08:06 AM
If I had to guess and only a guess I'd say its the front clutch pack. Fluid smelling bad like burnt smell its a toasty clutch pack. Were there any metal shavings in the fluid?

girraffe
04-30-2013, 04:08 PM
No metal shavings. Hooked up clear tubing to tranny cooler. Plenty pumped out but none would get sucked in from the bottle with new fliud. Nearly got the tranny out. Think I'm going to take the TC to US Trans and torque converter services in Littleton and have it rebuilt

Rzeppa
05-08-2013, 05:32 PM
Doing some post-Moab catch up here in the forums. Any update on this issue? If it is worth anything I 2nd Justin's armchair diagnosis. How many miles are on this tranny?