Rusty engine and frame area viewed from underneath a vehicle

This is why I pulled the wheelwell; with it in-place, none of this is visible, and it's difficult to reach. The connector in the foreground is for the 4WABS sensor. But the exhaust manifold can be diagnosed withOUT removing anything by using a mechanic's stethoscope.



Before ripping out any emissions systems, read this article.

I didn't fix it on this truck, but the evaporator insulation near the top Left can be replaced with a more-robust modern material, like this:

Owner caption November 2009 · Photo 58 of 434