Class C 1994 with e350 chassis exhaust manifold glowing red

Llibnmap wrote:
IMO if mainfolds are glowing red it's running way too rich! Either that or the exhaust is clogged. Just my thinking

Bill

On a gas eng it would indicate a lean condition.

If it has been a long time since the 02 sensor has been replaced, I would do so.
They get lazy and cause poor performance way before they're so bad it triggers a CEL.