4l80e Slippage
Thread Starter
Joined: Sep 2012
Posts: 257
Likes: 18
From: Colorado Springs, CO
4l80e Slippage I wanted to see if anyone out there has had a stall converter fail them before and what they experienced. My scenario is a 130k 80e from a Coke van in my Silverado (rebuilt sometime but have no idea when) and a 3200 stall in a RCSB lq4 Silverado with a few pounds of boost. I was out doing some rampaging and experienced a really weird 2-3 shift and bad slip Taking off and accelerating after that. I only drove it enough to data log all trans parameters after that to trouble shoot and it had really hard shifts with no codes. I kind of figured it was just the transmissions time so I tore it down after I checked idle pressure (~85) and to my surprise all clutches, bands, sprag, and low roller were good. All the clutch packs were hit with a set of feeler gauges and were within limits too. I have already sent the converter back to the manufacturer but I'm still pretty confused as to what happened. The fluid was really black as well.
