new truck got a question

83highsierra

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Jun 6, 2011
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georgetown Ky
ok first off a little background on truck its got a 4.1 L6 original 70,000 miles with auto and new carb

owned it two days and when i stomp on gas from stop or while driving it downshift but wont really pick up speed untill i let off the gas to where im bearly touching pedal and it will pick up if i put in first it does the same thing but when it finally catches you can feel it pull and if i shift to second and let off it backfires this really worries me cause if im taking off and pulling into traffic

the tranny fluid looks good a nice bright red and is full also what trans does it have
 
take it to a shop needs diag with a scan tool.

The tech will drive it with the scan tool on it and watch the data stream to see whats going on. No guessing that way as long as you have a good tech.
many thinks will cause this problem
 


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