Rev / snap throttle and stall...
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From: Southern AZ
Rev / snap throttle and stall...
Ok... I did some searching and cant seem to find this in a 6.0 (massive results in IDI)
If I rev my truck over about 3200 rpm and release the throttle, as it comes back down to idles it will stall.
Ficm voltage is fine and I am running a stock tune, ICP doesn't seem to drop until the stall...
What should I be looking for?
Richard
If I rev my truck over about 3200 rpm and release the throttle, as it comes back down to idles it will stall.
Ficm voltage is fine and I am running a stock tune, ICP doesn't seem to drop until the stall...
What should I be looking for?
Richard
Fleet Owner
Joined: Nov 2003
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Do you think you might have any unusual resistance in a pulley or say with a stuck A/C clutch? I wonder if it would stall at the same point w/ the belt off.
What is your MAF value at the stall point?
No codes?
What is your MAF value at the stall point?
No codes?
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From: Southern AZ
anything I should be looking for? by the time it gets to 1000rpm or so its lass than 5psi and around idle, just before it dies it's around 1.
Richard
EDT: Forgot to check maf... will do it again.
Richard
EDT: Forgot to check maf... will do it again.
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From: Southern AZ
Well I did this again today and it stumbled but didn't stall. at the stumble MAF went down to 13.2 g/s.
Stumble at it's lowest (the refresh rate on the CTS2 isn't perfect)
And recovered to idle
Richard
Stumble at it's lowest (the refresh rate on the CTS2 isn't perfect)
And recovered to idle
Richard
Fleet Owner
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Not exactly sure what to make of the data Richard. I wasn't expecting the ICP to drop that low.
That has me suspecting the IPR.
The other thing that I question is the significant drop in MAF at the same (approximate) commanded VGT%. Related to the drop in EBP I suppose, but boost is 0 in both screen shots.
That has me suspecting the IPR.
The other thing that I question is the significant drop in MAF at the same (approximate) commanded VGT%. Related to the drop in EBP I suppose, but boost is 0 in both screen shots.
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Posting Guru
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From: Salt Lake City, utah
Have we checked the screen on the IPR? After the work that has been done its possible it gunked.
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