Rewired TPS, new and worse problem now.

[Kontakt]

Originally Posted by NoDOHC

It appears that you are quite good at troubleshooting, you also don't seem to have any fear of tackling a wiring gremlin.

My theory is that the wiring to your MAP sensor is corroded - specifically the ground. My S4 NA did exactly the same thing and re-grounding the MAP sensor made the problems go away.

I also would clean the engine grounds and the ground on the drivers shock tower.

Hope this helps!

Bear in mind that the S4 only uses the TPS for light throttle cruising.

I had some good people on the phone (thanks Brian(s)), and strong motivation. Today is my girl's 30th and I was gonna be damned if I wasn't gonna drive over early and surprise her.

Thanks for the tip. I'll have to give that a shot tomorrow when the sun is back.