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Message: [QUOTE="Charles, post: 1316972, member: 103"] Only time my red truck ever died after a hard pull was if I was blowing the tires off real hard at real low speed, like if it got up into OD and locked the converter when the truck was only rolling at like 15mph, it would obviously stall when I lifted because the converter couldn't unlock in time when the tires grabbed again. How can you be sure your converter isn't locking the second your lift??? Aside from that, a truck will sometimes romp when the converter unlocks right down close to idle speed as you coast to a stop. In my experience this is because the ICP map is too steep around idle rpm, or, the ICP at 0 MFD is way high at say 1200rpm+, and as you come down to idle rpm it suddenly drops. When the converter is holding the truck up at 1000 or so and then suddenly releases the engine right as you're coming to a stop the MFD will be at 0, so the MFD has to rapidly ramp up to "catch" the engine as it falls through idle rpm. At most you should just have a hard romp one time with no lull. If you get a romp, romp, romp, then more likely than not, the ICP map is moving too much around idle. This is in the direction of MFD more than rpm, unless the rpm is really moving around, then both. Another trick is to watch your MFD values around idle when the truck is fully warmed up (on a scanner). Find out about the lowest it ever goes (when actually idling, not when coasting) and then go to your MFD table and at rpm points juuuuuuust above idle, set the minimum in the table to values just shy of those you scanned. This will "back up" the idle speed control algorithm by not even allowing things to ever get too low in the first place, greatly reducing the "bounce" effect. If you get these values too high at map points higher than idle you'll know, because the truck will "hang" a little coming back to idle if you stab it in neutral and let off. That means you've gone too far. If you get them right, the truck will just ease down to idle quickly, but not overshoot. That's been my experience. On Edit: Oh.... and if you get the minimum MFD values too high across the entire map.... you better not let your right hand get lost because it's going to need to get that key switched off right after your crank the truck because sh*t's gonna get real.... real quick.... So don't do that! Don't ever have your minimum pedal MFD values above 0 at anything over say 1500rpm. I knew a guy that was trying to figure out what this MFD table was one time and did that... ;) Also, if you get the minimum MFD too high [i]at[/i] idle rpm, the truck will idle like dogsh*t and over rev your set point. [/QUOTE]