Gm4l80e failure
Discussion
Deliberate cross post as here and there are different.
Hello jag world I've a v12 jag with Gm4l80e auto box and after a road trip around Germany <140mph chasing audis I was at 30mph, in Belgium it seems to have given up.
So along with some bangs from The drive line I had sloshing sounds and on checking the fluid levels it's now higher than when filled. My thinking is tourque converter ruptured and now sump is full.
Does that sound like tourque coverter failure?
Part from jag is nla and jags in Belgium. Safe to say for a £1k part I want my car back.
Anyone have a recomended supplier?
Standard engin is 365 lb?ft (495 N?m) at 3650 rpm myn is lightly breathed on but I thought these boxes were double 'ard
Would a good stall speed be in the 3200-3600 range?
Extra irrelevant etc
I know people drag these things so kind of supprised I smashed one I think I'm ~400bhp at 6krpm. It feels like it's pulling harder all the way through to 6k not slowing after 5k like standard power trace indicates (ported heads uprated exhaust sports cats) gentle breathing things although the aim is euro 3 (smashed the 2) not bhp
Hello jag world I've a v12 jag with Gm4l80e auto box and after a road trip around Germany <140mph chasing audis I was at 30mph, in Belgium it seems to have given up.
So along with some bangs from The drive line I had sloshing sounds and on checking the fluid levels it's now higher than when filled. My thinking is tourque converter ruptured and now sump is full.
Does that sound like tourque coverter failure?
Part from jag is nla and jags in Belgium. Safe to say for a £1k part I want my car back.
Anyone have a recomended supplier?
Standard engin is 365 lb?ft (495 N?m) at 3650 rpm myn is lightly breathed on but I thought these boxes were double 'ard
Would a good stall speed be in the 3200-3600 range?
Extra irrelevant etc
I know people drag these things so kind of supprised I smashed one I think I'm ~400bhp at 6krpm. It feels like it's pulling harder all the way through to 6k not slowing after 5k like standard power trace indicates (ported heads uprated exhaust sports cats) gentle breathing things although the aim is euro 3 (smashed the 2) not bhp
Edited by Jefuk on Sunday 17th September 01:34
Jefuk,
Strange the oil level has increased, converter failure will not cause this as the oil is shared with the transmission.
My suspicion is either the cooler has failed and you've got coolant in the trans; have you checked engine coolant level?
Or, you may have ingested rain water through the breather? Is the oil cloudy or emulsified?
Stall speed sounds very high - should be ~2500 rpm, again could indicate water in oil.
Hope this helps.
Strange the oil level has increased, converter failure will not cause this as the oil is shared with the transmission.
My suspicion is either the cooler has failed and you've got coolant in the trans; have you checked engine coolant level?
Or, you may have ingested rain water through the breather? Is the oil cloudy or emulsified?
Stall speed sounds very high - should be ~2500 rpm, again could indicate water in oil.
Hope this helps.
I may as well update this.
I got the car back to the UK and the gearbox rebuilt at bk transmissions in Overton.
Didn't cost anything as much as I had expected. Completely smashed the thing up inside.
Car Back on the road and used as intended
Edit it was bk transmissions
I got the car back to the UK and the gearbox rebuilt at bk transmissions in Overton.
Didn't cost anything as much as I had expected. Completely smashed the thing up inside.
Car Back on the road and used as intended
Edit it was bk transmissions
Edited by Jefuk on Tuesday 2nd April 07:42
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