Sputtering/backfiring through intake
Okay, so i bought a 2002 v6 dakota from a friend. I did an intake manifold gasket to it, hoping it would solve the problem. It got rid of the cylinder 1 3 5 misfire codes, and the 02 sensor high voltage code. But it did not solve the problem.
When you stand on the throttle, sometimes itl downshift and take off like it should, but usually it'll bog pretty bad and start sputtering and popping until it reaches the upper rpms, then it takes off.
So currently there are no codes being thrown, and the problem seems to be worse when it is cold. It isn't registered because i don't want to waste the money until it runs right.
I appreciate any help, Thank you!!