What would cause a 4.3 v6 to when under heavy throttle stutter ?.. but if you accelerate slow it runs fine ?.. I am assuming fuel filter or bad fuel prs regulator.. but thought I would ask the guru's here..
engine running issues.
Mar 20, 2007
4 Replies
Stutter rich or stutter lean?
----------------- TheSnoMan.com
You might start by changing fuel filter as it sounds like it might be starving out some. You could do a fuel pressure check too. Is it a TBI or VorTec 4.3
----------------- TheSnoMan.com
if its a 1995 or newer the problem is going to be your MAF sensor (mass air flow). if its pre 1995 the problem is most likely your tps (throttle position sensor
"SnoMan" wrote
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