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whats the problem? After running the car for about 20 minutes, well after it is at operating temp (according to the temp gauge) then the car loses all power. can't make it past 2500. sometimes though, it backfires and then drives fine for 10 seconds or so. Can get it to run right if i can get past 3500 down a steep hill, but lose of power returns as soon as i shift up and load is put on. at a stop, the more gas, the worse it gets. perfect idle, and perfect operation if less than a 10 mile trip.
Checked vacuum lines on intake, fuel lines, leaks after AMM, major ground points, air filter, fuel injectors. plugs look slightly yellow, normal amount of deposits. what do you think? thanks, fred
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