85 silverado 454

Joined: Jun 12, 2008 Posts: 1

have a new air filter fuel pump fuel filter and when the engine gets warm and if I am going up hill the engine has little or no power even with the pedal to the floor..it doesnr rev high just like as if no gas. This doesnt happen in the winter??

External Since: Apr 11, 2008 Posts: 6

"paul1971" wrote in message

> have a new air filter fuel pump fuel filter and when the engine gets
> warm and if I am going up hill the engine has little or no power even
> with the pedal to the floor..it doesnr rev high just like as if no
> gas. This doesnt happen in the winter??
>
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> Thread archive:
> http://www.AutoBoardz.com/85-silverado-454-ftopict247551.html

Could be a plugged catalytic converter. I encountered that same symptom
with a 1981 Suburban 1/2 ton 454.