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TennesseeZ · 04-22-2010, 04:17 PM

There's quite a few threads concerning this with our trucks,and it seems there can be more than one cause. IIRC, ChevyTech just recently helped a member trace his problem back to a faulty EGR. And I was having problems where the truck (93 Yukon) would crank and run after a shot of starting fluid but not without it, and the transmission was acting stupid also. A new TPS fixed both problems. 68C15 finally figured that out for me. TPS can also have a "flat spot" that will cause part throttle hesitation. And a clogged fuel filter can starve the engine where it makes no power. And before trying to diagnose any of this, it's imperitave that the engine be in good tune.

04-22-2010, 04:17 PM	#9
TennesseeZ Countdown Survivor Join Date: Aug 2007 Location: Bean Station, East Tennessee Posts: 9,676	Re: Throttle Mashing hesitation? There's quite a few threads concerning this with our trucks,and it seems there can be more than one cause. IIRC, ChevyTech just recently helped a member trace his problem back to a faulty EGR. And I was having problems where the truck (93 Yukon) would crank and run after a shot of starting fluid but not without it, and the transmission was acting stupid also. A new TPS fixed both problems. 68C15 finally figured that out for me. TPS can also have a "flat spot" that will cause part throttle hesitation. And a clogged fuel filter can starve the engine where it makes no power. And before trying to diagnose any of this, it's imperitave that the engine be in good tune. __________________ 93 Yukon 89 Silverado Z71 SWB Sport 91 K 2500 Silverado "Lobuk-Worktruk" A MAN OF HONOR DOES NOT LIE, CHEAT, OR STEAL, NOR TOLERATE THOSE WHO DO. Gettin' old ain't for sissies.