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cutout problem - 5kT
I am experiencing an intermittant cutout problem with my '83 5kT. I
first noticed this problem last summer while vacationing in Montana.
The car ran great all the way across Minesota, SDakota and the low
altitude parts of Montana. When I started to gain altitude, I
experienced a abrupt loss of power, identical to an overboost cutout
condition. The tach went to zero immediately, just like shutting the
engine down. I gave up on going further up and settled for exploring
the lower-altitude areas at the time due to reaching the limit to my
meager vacation budget. The trip home (IA) was uneventful.
Now, after nine months of running fine, I am suddenly seeing the same
problems, except at interstate speeds. Happened at 70 mph, ambient
temp=75 deg F. 91 Octane fuel. Cruise control on. No AC.
So, any ideas?