Bucking = too much air?
Thread Starter
Launching!
Joined: Aug 2005
Posts: 211
Likes: 1
From: East Central Florida
Bucking = too much air? Ok, EFI Alchemy did an amazing job on tuning my ASA Cam, but I am bored and I am trying to get my conveter locked a little lower in 4th. I can lockup at 60 without any issue, but 50 would be great. If I set the cruise @ 50, the converter will lock (Dont know why) and she bucks if i go down a hill locked up, but the bucking ceases once she comes under load again. I have no throttle cracker enabled. Could this be spark, or airflow (or both)?
Bucking may be DFCO cycling in and out, catch a log of it
and look at whether the bucking events are showing 0
degrees advance and zero injector pulse width. If so then
DFCO is what's doing it. A lot of cams put you on the wrong
side of the fuel-cut criteria (MAP especially).
and look at whether the bucking events are showing 0
degrees advance and zero injector pulse width. If so then
DFCO is what's doing it. A lot of cams put you on the wrong
side of the fuel-cut criteria (MAP especially).
For my particular setup, I had to add a couple of degrees of timing and get the fueling just right. It locks up at 50 mph for the 4th gear. Each setup is different, so you may have to experiment with the lockup in 1-2 mph increments. I would also make sure the TCC release speeds are not conflicting with the apply speeds. The TCC should release on decel and going up a hill or grade to prevent lugging.
Hi Drew,
Longtime no see. Are you sure are locked? I mean your scan tool might show a commanded lock but, you maybe losing pressure due to one of many things...the most recent we have seen was an input shaft housing bleeding off pressure.
Don't be a stranger, drop us a line.
Doc
Longtime no see. Are you sure are locked? I mean your scan tool might show a commanded lock but, you maybe losing pressure due to one of many things...the most recent we have seen was an input shaft housing bleeding off pressure.
Don't be a stranger, drop us a line.
Doc
Thread Starter
Launching!
Joined: Aug 2005
Posts: 211
Likes: 1
From: East Central Florida
Hi Drew,
Longtime no see. Are you sure are locked? I mean your scan tool might show a commanded lock but, you maybe losing pressure due to one of many things...the most recent we have seen was an input shaft housing bleeding off pressure.
Don't be a stranger, drop us a line.
Doc
Longtime no see. Are you sure are locked? I mean your scan tool might show a commanded lock but, you maybe losing pressure due to one of many things...the most recent we have seen was an input shaft housing bleeding off pressure.
Don't be a stranger, drop us a line.
Doc
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