everything all at once...

hello. i have a 90 k1500, standard cab, long box, 350, with a 5 speed stick. i did an enginge this time last year, and have had no problems till now...

here's my story.

1 month ago (december in mich, coldish 30's) , she starts to pop and sputter. no real pattern. within a week, it's all when she's cold. (im still driving reg.). then a week later codes trip. didnt bother, it still ran ok when warm...:nono: last week, poping and sputtering continue all the time. cant top 40 mph, and backfiring out the exhaust... codes were telling me something different everytime... (lying to me?)...:banghead: started with timing... it was off a few deg. then i lost spark.:banghead: so, i rebuild my dist. cap, rotor, pickup coil, ign. cont. module, the the other coil is fine. got my spark back. she runs again.:) but whal doing that, i saw a spark.:eek7: my + batt cable on the starter had come loose. cut open, and resting on the starter heat shield... :banghead: so... i fix that. test drive. poping sputtering. new code trips. ok. this time it's real. 44 o2 sens. ok. replace that (hell coming out,:banghead: apply anti seize). test drive. new code 34 map sens,:banghead: but no o2 code. now, it's just that code. are all these things related? the bat. cable damage everything??? (over reacting) im wondering if the o2 sens was bad... am i chasing gremlins... but then again the code did stop... for the time being. but if the map is acting up... making me run rich... o2 would trip out, right... ARGGGHHHHHHH:banghead:

i dont need a backyard mechanic... i am one. i need the guru of the garage, someone from the mecca of mechanics, King of the K series...
am at my witts end. thanks .

In your list of repairs I did not see plug wires, bad wires can do some real screwy things.

yep, new plugs, and wires. did them w/ the engine. and checked the condition of the plugs and wires in all the ruccus. now i'm chasing the electronic spark control module... :banghead:

If you are getting a MAP code, be sure the ends of the vacuum hose are still good. On my 90 K1500, I had a vacuum leak at the MAP sensor where the glue was no longer working.

Might also help to get a scanner on it and see what the fuel trims are and what the MAP sensor is reporting.

//2000CAYukon

replaced the vacume lines when i did the engine... half of them were bad, and the other half got damaged removing them... i'm still monkeying with the EST right now... 11:00 at night, and still going... another $75...:frown:

forgot... im looking for a scaner, but im not sure what kind to get... i want an awsome one... not just a cheap piece of crap... but i'm not sure what kind i want. there's a lot of them out there.:confused: