2002 Hyundai Elantra transmission

2002 HYUNDAI ELANTRA
140,000 MILES • 2.0L • 4 CYL • FWD • AUTOMATIC
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MRRICHARDS1990
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I have a problem that I cant figure out I can go out start it up and take off fine shifts at a little high rmps but shifts non the less but if you get down to low of speed it acts like it aint getting no power rmps shoot down to 500 and if you give it gas its shoots to 2000 but wont accelerate I just bought this car previous owner said it was a charcoal box problem so I bought and replaced the blow off vapor value and other parts replaced the fuel filter and fule pump im beginning to think its the speed input sensor but I'd like another input before I speed anymore money on it
Sep 24, 2014 at 6:48 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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