it may be your torque converter kicking in and out of gear. But if your battery light comes on check the battery if it's over 4 yrs old it may be bad Also check to see if your belt tensioner is working and tight and check fuel pressure.

Answered by hmac300 (expert)
17,775 answers provided

I have had the battery and alternator checked, both checked out good. The belt is tight and the truck is getting good fuel pressure. The mechanic initially said the computer was pulsing and causing the torque converter to kick on and off, that led to replacing the computer. But it is still having the same symptons. Can a faulty/shorted Vehicle speed sensor or throttle position sensor cause these symptoms?

Response from landisdb
1 question asked

usually if htosea re fualty they will et a code but stranger thins have happened. i would check all my grounds eng to bat bat to body, engine to body maybe try cleaning throttle plate on both sides and if your tires pressure is one with 80 psi the put the back ones to 55 when empty.

Answered by hmac300 (expert)
17,775 answers provided