For the past 2 years, my tranny hasn't sometimes been shifting from 1st to 2nd until about 26-28 MPH. After that happens, it goes into failsafe. Now it happens always right after start. I think it could be the pulse generator, because when this problem occurred first 4 years ago, the dealer replaced the pulse generator and it worked fine after that. Also, I wonder if corrosion on the battery can contribute to inaccurate voltage in the transmission. One dealer detected the codes p0740, p0743, p0722 (about 2 years ago) and said it would then need the car a few days to troubleshoot more. Another dealer read other codes (about a year ago), which I don't have yet, and said to replace the transmission. What do you think? Also, am I doing anything to the engine if I drive on 1st up to 26-28 MPH when the tranny switches or if I drive 15-20 MPH in 1st? I don't have an RPM meter, so hard to tell if it goes into the red. Is there anyway to start the vehicle and be immediately in failsafe?
2007-05-05
12:12:24
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9 answers
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asked by
Charmus
2
in
Hyundai