HELP!! 99 tahoe timing
HELP!!! i have a 99 tahoe with code po 340 (cam senor). here is my problem. i changed the cam sensor and it did not fix the problem. it is missing at highway speads. last night i pulled the dist. out with the cap and rotor all in one. i turned the gear on the distributor but not the crank. when i put it back in it is acting like it is out of time, backfiring, really erratic idle, cutting off. i loosened the hold down clamp and tried turniung the distributor like the old non computer kind and it tried to run a little better but would not stay cranked. did i screw up the timing by turning the gear and therefore moving the rotor and if i did is there and easier way to get it back on time than bringing the #1 to tdc and setting it like that? if there is i would like to know cause that is a pain in the ass as you know. anyone with advice please help, thanks