Cured: High Speed, Random Hesitation and Slow Starting
Posted: Fri Jul 11, 2014 3:28 pm
For two or more years my AWD, 2002 Astro was plagued by an engine hesitation at speeds in excess of 50mph. The hesitation was not continuous; it would buck once or twice and might not reoccur for seconds or minutes or hours. It was unpredictable.
I also found that starting, while certain, took several attempts, which I took to be normal.
I tried to eliminate the hesitation with a new fuel filter, a full tune up, and the addition of fuel injector cleaners. Nothing worked. I considered replacing the distributor as has been suggested here and elsewhere on the Web; I'm glad I followed the advice of Gerald at Overland Vans and didn't.
Leaving for a thirty day road trip my fuel pump failed completely. I had it and the fuel filter replaced and continued on with a round trip from So. California to Jasper, Canada and back.
Both problems vanished. In over three thousand miles of travel the engine didn't hesitate once. Now it starts instantly and w/o the need to "give it the gas."
Apparently the fuel pump was in a failure mode for years. Who would figure...?
I also found that starting, while certain, took several attempts, which I took to be normal.
I tried to eliminate the hesitation with a new fuel filter, a full tune up, and the addition of fuel injector cleaners. Nothing worked. I considered replacing the distributor as has been suggested here and elsewhere on the Web; I'm glad I followed the advice of Gerald at Overland Vans and didn't.
Leaving for a thirty day road trip my fuel pump failed completely. I had it and the fuel filter replaced and continued on with a round trip from So. California to Jasper, Canada and back.
Both problems vanished. In over three thousand miles of travel the engine didn't hesitate once. Now it starts instantly and w/o the need to "give it the gas."
Apparently the fuel pump was in a failure mode for years. Who would figure...?