sliderbkt

iTrader: (10)

----Update 3rd has died now too!----

Today my second Performabuilt trans broke. The first time was 9 days after install. This one made it 79 days. The first one was a broken input sprag, and this time seems to be the same thing.

Is there anything that can be done to prevent this failure?

My stock trans went over a year at the same power BTW

FLT

iTrader: (1)

I was just reading you Sig. I see that you have a build 6.0 with a turbo. What are your rwhp/tq #'s? If you are between 500-550 at the tires, I believe you are pushing a 4l60e to it's limits in a truck application. You might want to think about a 4l80e. What kind of input sprag is your builder using skf or borg? If it is the skf I would suggest trying a borg sprag. Vince

sliderbkt

iTrader: (10)

It has a borg warner.

I haven't dynoed it, because of the AWD.

At this point I wish I had gone with the 4l80e.

sliderbkt

iTrader: (10)

I thought I would give an update. After sending the trans in to get fixed, they found some flaws in the case. I'm not sure if they were there to begin with or if they were something I caused. I was sent another trans. This trans seemed like it was a very used core. There was nothing wrong with the case, but it really seed like it came from the scrap yard. It was a little dirty, but nothing else noticable. Once installed we went to plug in the main plug, and it fell back into the trans. So, we pulled the pan and pushed the harness back up. When we plugged it in again the same thing happened. The only way I could make the connection was to hold the harness with the pan off. Then I had to order the cooler fittings and shifter bracket that were on the trans I sent in, because there were not sent back with the new unit.

Fast forward 63 days. Today I was running an errand and noticed that is wasn't shifting into third. I was driving normal and definately not pushing it. In fact After the last trans blew I turned the boost as low as I could get it without creep, which is 7-8lbs. I have not been hard on it at all.

Hopefully it is a solenoid or something. But we'll see. My truck has spent more time torn apart this year than on the road.

performabuilt

iTrader: (25)

Question when you say its not shifting to 3rd is it neutralling or just not shifting and staying in second . Or do you mean that it wont move in the OD position, A sprag would result in a no movement in the OD position? When you pulled it down into OD and tried to go nothing would happen.

sliderbkt

iTrader: (10)

I've tried not to drive it to much, I just took it home and parked it. But, the 1-2 shift is fine then it will feel like it is holding 2nd. I tried to get going fast enough for it to hit forth, but it just revs out. Then I slowed down and it would grab second again. Manually shifting didn't seem to help, but I only tried it a couple times.

performabuilt

iTrader: (25)

Well that dosent sound like a 3-4 clutch failure anyway ussually that results in a normal 1-2 followed by a neutral when it should shift to third so thats a good sign. Do you have any codes or have you checked yet?

sliderbkt

iTrader: (10)

No SES light yet.

performabuilt

iTrader: (25)

Ok well keep me posted ok it kinda sounds electrical but we will see.

sliderbkt

iTrader: (10)

Is there anything specific to check? I crawled underneath and made sure the plugs were tight. Everything seemed ok.

performabuilt

iTrader: (25)

Well scanning it and running a scanner on it to watch the data stream to see if thirds being commanded or not.

FLT

iTrader: (1)

First off you should contact your builder about the issues that you are having. It sounds to me like you have a 3-4 clutch failure or an input drum that has broken the snap ring groove for the 3-4 clutch. Might take a drop the pan and look for chunks from the input drum or clutch material. Good luck. Vince

performabuilt

iTrader: (25)

He allready has we are working with him .

FLT

iTrader: (1)

My bad. Just looked at his signature. Never the less I do believe what I posted to be good advise. Glad to see Frank is working with you. Vince

sliderbkt

iTrader: (10)

Thanks guys, I'll see if I can get it on a scanner tomorrow.

performabuilt

iTrader: (25)

Your welcome we always work with our customers, And yes it is possible that a 6.0 all wheel drive turbo TRUCK IS PUSHING IF NOT EXCEEDING THE LIMITS OF A 4L60E if so we will deal with that either with the upcoming 4L60E LEVEL 4 (Patented) or the 4L80E as a possibility. Thats what we do solve performance transmission problems. Research is a constant.

cablebandit

iTrader: (37)

80e and all the fun of monthly tranny swaps is gone

sliderbkt

iTrader: (10)

I agree. I would really like to go this route if it turns out to be broken. But, I went with this trans because I was assured it could handle the power even with the weight and the AWD.

But, Frank has been really cool. I'm sure he'll get me taken care of.

usd2sing

iTrader: (15)

rbrcka

I hear ya and know how you feel. I bought my car in December last year and about 3 weeks after I had it I lost 3-4. It was a 5 year old tranny in a blown 383, so I wasn't all that shocked since it felt like it was slipping some. I got my built one put in and had a fluke hard part failure after approx 130 miles of pretty easy break in driving.

I got a replacement and everything seemed good for a couple hundred miles until I lost compression in the engine do to cracked piston ring lands. (the guy who had it before me was apparently hammering it hard with bad tunes) I had it down for close to two months freshening up my forged bottom end. Then a little over 500 miles into my engine break in (very easy driving) I just all of a sudden lost 3-4 on the replacement tranny with no signs leading up to it at all. I actually checked the shifter location like three times to make sure I wasn't in neutral, because I couldn't believe it.

So now I'm to the point where I'm scared to even drive the car for fear of something going out. I have actually removed the procharger and just put on a cold air intake and will most likely sell the car soon. Seems like this car wasn't meant to be.