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03-18-2007, 08:05 PM
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AF Newbie
Join Date: Nov 2005
Location: prince frederick, Maryland
Posts: 2
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1989 4.3L engine miss
1989 C1500 4.3L with 90000 miles. This problem is a little hard to define. While driving at highway speed if I let up on the gas just a little the engine will start to miss/buck slightly. If I unplug the egr valve the problem seems to disappear. Engine idles well.
I have replaced the distributor, coolant sensor, tps, idle control, egr valve and solenoid, map sensor and oxygen sensor. |
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