I bought a 2002 Mazda PS5 its had several mods the previous owner was having it redone. I paid $500.00
My 2002 is acting like it is jumping when you accelerate. I had oil change done check engine light came on it's been acting strange ever since random thing's happen at random time's. I'm not sure about what engine is in it but it was put in just a little over 1000 miles on the engine bought it as a surrendered vehicle the seller gave me a salvage title

 

More info please. What Check Engine Codes?