98 C3500 454/4L80 107k
Had it tuned Monday tq management and downstream O2 sensors deleted. Timing was out 27° we were able to move the distributor and get it within spec for a successful crank/cam relearn.
As we leave the AC isn't cold at idle, but as you increase rpm (even not moving) it starts blowing cold. About 150 miles into the trip, the temp gauge climbs to 210, the AC quits blowing cold, and a few miles later the truck is running on 5 or 6 holes. Missing badly, won't take any throttle at all, just sputters and pops. Pull over, cools off, starts right up and runs fine. Any time it gets to 210 it repeats the behavior, each time it gets below 160 ish, it runs great.
Anyone got any ideas?
Had it tuned Monday tq management and downstream O2 sensors deleted. Timing was out 27° we were able to move the distributor and get it within spec for a successful crank/cam relearn.
As we leave the AC isn't cold at idle, but as you increase rpm (even not moving) it starts blowing cold. About 150 miles into the trip, the temp gauge climbs to 210, the AC quits blowing cold, and a few miles later the truck is running on 5 or 6 holes. Missing badly, won't take any throttle at all, just sputters and pops. Pull over, cools off, starts right up and runs fine. Any time it gets to 210 it repeats the behavior, each time it gets below 160 ish, it runs great.
Anyone got any ideas?