Hey guys, workign on my mother-in-laws 2001 3.0 V6. The car won't rev over 4K & can't get it past 40MPH. REminds me of a rev limiter in a gas power golf cart. Any extra gas pedal does nothing. It is setting codes for a lean fuel condition on both 1&2 banks. TPS seems fine, & fuel pressure sits right at 40psi. Are these supposed to be closer to 60PSI I have no clue.
I can hold the accelorater to the floor in park & it stops at 4K, not sure if thats part of the problem, of if these have a 4K rev limiter when its in park?

Any ideas?

I got it. It was the MAFS

Thanks for checking in.