1996 Astro AWD 4.3L V6 308,000Km
I have a hesitation or fuel surge problem. What are the likely causes?
Symptoms: when in drive and accelerating, it will start hesitating as it changes from 1st to 2nd. It will do the same from 2nd to 3rd and recently has started surging/hesitating at highway speed. If I keep the van in 1 (ie. 1st gear), it is smooth to accelerate, but as I ease off on the gas when reaching 30km/h it will start surging. So it seems like whenever the engine is at high idle and I ease off on the gas, it will hesitate/surge. Happens in temperatures from -20 to +7. Didn't happen much in the summer when temps were warm. Sometimes it won't hesitate/surge at all! (totally frustrating...especially when I take it into the shop and they can't get it to hesitate) I've ran a couple bottles of fuel system cleaner through and nothing changed. Something electrical? Please help, I love this van and don't want to get rid of it.
Tsb remove dist cap ,clean out breather holes i replaced cap and rotor at the same time. chevy has the problem with the 4.3l astro,s and blazer i have both.fixed the problem when buying the cap and rotor the directions inside will also tell you how to fix
Had the same problem with 95 astro. Turns out the transmission fluid was low. In cold weather it was even lower causing slipping.
Sounds like fuel filter is plugged
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