Car keeps ideling up and,down and occasionally bog down ie. But it always pulls secondary air flow incorrect flow. Recnt motor swap on it 45k on motor 166k on car rhinking exhaust leak. Any ideas

 

If the intake has recently been dis-assembled, first check that all the vacuum lines are connected. Your symptoms are consistent with a vacuum leak. In particular, check that the line going from the back of the upper intake manifold to the vacuum chamber is connected. If it is not, the air control valve will be inoperable (because it will have no vacuum), hence no secondary air flow.

 

Thanks far as i know ive checked a couple,times,all,the air lines are hooked up ive had to,take the front end,apart a couple,times when i replaced the radiator. But,its always done,it,since,the engine,swap i,had done