|
Re: Silverado bogs out and backfires when first started
It sounds like what my 2003 Siverado 5.3 did a few years back. it would run rough, hesitate, and stumble until it warmed up some. I was not getting any check engine lights but when I checked with my scan tool it showed LTFT (long term fuel trim) was very high. I replaced the intake manifold gaskets and solved the problem. You could see that the old gaskets had failed as soon as I pulled the manifold.
Last edited by brian_k24; 11-22-2015 at 03:25 PM.
|