stalling when putting shifter into gear

1999 CHEVROLET BLAZER
157 MILES
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MATTCHEVYGUY333
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i have a 99 s10 blazer and when i put it in gear is stalls like something is locking up because it is not working, i replaced the throttle position sensor and when it stalls it shakes really bad in reverse like something is locking up. when i replaced the two sensors it didn't do it in drive just a little bit in reverse then 2 days later it does it in both drive and reverse

Please help
Sep 18, 2011 at 4:56 AM
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JACOBANDNICKOLAS
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Have any warning lights come on? Does the vehicle jump when this happens or just turn off? What sensors did you replace?
Sep 18, 2011 at 4:59 AM
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MATTCHEVYGUY333
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it stalls but when it stalls it****** like it locking up. and the sensors i replaced are the throttle position sensor and the idle air control. after i replaced them it stopped for 2 days and now does it every time i put it in gear
Sep 19, 2011 at 3:19 AM
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JACOBANDNICKOLAS
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If the car jumps, it sounds like it may be transmission related.
Sep 19, 2011 at 3:29 AM
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MATTCHEVYGUY333
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i think it started after i put in a used rear end
but it stoped after i replaced sensors but did it 2 days later
Sep 19, 2011 at 5:03 AM