Re: Lurching 40 to 50 mph slight hill
How's the idle? Is the engine light on?
Does it only happen when going up a hill?
Sounds like the torque converter clutch to me, which is engaged in 4th and 3rd gear, is going between locked and unlocked.
Could be an engine miss, but three cans of Techron won't help if it is. Techron is good for keeping the engine and injector clean, as well as the fuel sending unit (if using the right Techron).
Can't help much with a long distance diagnosis, suggest a dealer visit.
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