Engine dies after TC install
02-20-2007, 03:26 PM
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Engine dies after TC install Installed a new Vigilante 3200 TC and now everytime I put it in gear or come to a stop, my engine stalls out. This wouldn't happen with my old Yank 3000. I have LS1 edit and have tried raisng idle in gear but it didn't help. I even played with the the idle air flow tables a little but wasn't real sure which range to adjust. Any suggestions?
02-20-2007, 05:39 PM
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That's what I though at first. If I SLOWLY come to a stop, it doesn't happen. But almost everytime I put it in gear it shuts off. I just got it back from PI, I had them re-stall it from 2800 to 3200, so I really don't think the lock up clutch would be stuck and it's not an instant shut off but a gradual one. I had a lock up switch installed and when I would forget to switch it off, it would INSTANTLY shut the engine off as soon as I put it in gear.
02-20-2007, 11:15 PM
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Hmmm. It could be caused by installation problems. Check seals, leaks etc. before going to the effort of dropping the trans. Also, get someone to log the TCC slip RPM. That will tell you straight away.
02-21-2007, 08:00 AM
#6
Use the tuning platform you have. Do an RAF assessment first off. See what is needed and give it to it. After that I'd have a look at the throttle follower table, it's delay, and it's decay values. The TF will hold the IAC open a bit (or more, depends on the values you use) and then when the DELAY period is up, the decay begins which lets the idle settle back down. Make sure the Throttle Cracker table doesn't have any of those weird OEM holes that whack out the IAC. While you are in there don't forget to set your misfire tables high so things lockup like they should.
02-21-2007, 12:35 PM
#7
Originally Posted by Frost
Use the tuning platform you have. Do an RAF assessment first off. See what is needed and give it to it. After that I'd have a look at the throttle follower table, it's delay, and it's decay values. The TF will hold the IAC open a bit (or more, depends on the values you use) and then when the DELAY period is up, the decay begins which lets the idle settle back down. Make sure the Throttle Cracker table doesn't have any of those weird OEM holes that whack out the IAC. While you are in there don't forget to set your misfire tables high so things lockup like they should.
You have less rotating weight on the engine now, which adversly affected the stock idle tuning in a negative way. Much like installing a cam, you will need to recalibrate the idle parameters for the stall converter.