Well took the battery cable off over night it reset everything. It goes in 1st and second fine but once in third gear it starts to sputter and pop and like cut out ... Im so ready to fix this !!

 

Hhhhmmm, it ONLY does this when the truck shifts into third?

 

yeah it sorta leaps when taking off also. I got under the truck and the cat is like a bluesish color it wasnt that color when i bought it. Im just hoping the catalytic convertor is clogged.

 

Was it doing any of this prior to the trans rebuild?

 

No cause I put the new cat on and then the tranny maybe 2 or 3 months later. I think its the cat cause its doing the bucking and it hesitates real bad and wont go past a certain rpm. And the cat is that blue color like metal get when it gets real hot. I removed the 02 sensor and it did run a little bit better. Im almost 90 % sure its the cat. What do you think man ?

 

Can you remove the cat completely? and take it for a test drive?

 

yea imma go buy a sawzall and wack it off ... i did mess with the fuel sync and it hasnt been right since ... im thinkg the fuel sync being off has finally ruined my cat !

 

Well It started runnign real good today didnt sputter at all worked like a charm then i stopped got gas and something to eat then it started doing it again. I also noticed that when driving a 4WD light is coming on in the cluster, but my truck isnt even 4wd. I dont know whats going on ?

 

Ok removed the cat and its loud but when i floor it it still pops and like shuts off for like 2 or 3 seconds then pops again and wont go. I did notice I put the fuel pressure tester on it its 49 psi at idle when i rev it it stays at 49 even when i put it in drive and the emergency break on and rev it a lil it still stays at 49 psi. Im now leaning towards the fuel pump or the engine not getting enough fuel !!

 

Pressure is good, so, i don't think its a fuel problem.....

Does the engine run smooth?