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Potential Tuner
Stock LQ4 stumble/stall when changing gears (automatic)
As the title suggests, my stock LQ4 and 4L80E are having a bit of trouble. When I shift between gears the engine will dip rpm to about 400/300 or it will stall all together. It seams to improve when the truck gets hot. I bumped the target idle but that didn't seam to help. I'll attach a VCM scanner file of the problem as well as the tune file. Any suggestions are welcome!
Thanks!
stumble when chagning gears (auto).hpl
58 f250 base tune bumped idle.hpt