Comes an go: I did spark plug changed, smoke vacuum leak check, pressure check, inspected all the injectors wirings, isolated the spark plug wires, A while back the idle pulley broke, which cause some damage the the AC compressor, did change the coil, due to wire was cut in half. did a replacement coil, AC is working now. Van run ok.
Thank you and God Bless

 

What spark plugs are in it?

How many miles? Fixed the plenum yet?

 

OEM, RC12YC Champion. In 03/18/2018 181,634 installed Hughes 7725 manifold intake kit. I take care of my van real good, all the fixed are documented. If I learn how to rewire this van, I will do it. Rewiring this type of van, I believe would be expensive. I plan to keep this van until 300K.
Ty, be safe

 

If all the tune-up parts are in good shape, likely time for a compression and/or leakdown test.

 

Bad catalytic converter, caused the p0300 on my van.