what is wrong with my pathy?

[88pathylove]

i recently had my timing belt replaced because my pathy was stuttering

it lost power and i would step on the gas and it wouldnt even go forward

so we took it in and replaced the timing belt water pump. when i picked it up

it was running great like new, but within two days it lost all power and my exhaust

is backfiring every 15 seconds worse than before i took it in i brought it back to

they guy he says he believes it is a cylinder missing but we ran codes and it says 55 which

is no malfunction? but trust me there is a major malfunction any ideas? it would be a great help.

[unccpathfinder]

checked the MAF and o2?

[TruBlu]

checked the MAF and o2?

 

Belt stretch? I had that happen to me. The new belt stretched over the course of a couple of days and the timing was so far up @!*% creek it wasn't funny.

[88pathylove]

02 is pretty much brand new and no havent checked MAF yet thanks