Tranmission Issues - Hyundai Forums : Hyundai Forum
 
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#1 Old 05-15-2005, 08:20 PM
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platt532003
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My 2001 Hyundai Accent automatic transmission gets stuck in third gear and wont shift unless I turn the car off even if I just flick the key its ok as long as I cut power it will shift. Im thinking maybe there is a transmission shift sensor that might be malfunctioning. It will also downshift from overdrive once I get past third and get stuck there again. Any ideas on the problem would be appriciated.
thanks- Jeff
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#2 Old 05-16-2005, 09:46 AM
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duke
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this is an electronic problem, there is a TSB (03-40-016 & 022) for the TCM reflashing, and pulse generator updating.
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#3 Old 05-16-2005, 08:09 PM
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platt532003
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any idea where I can get a copy of the TSB?
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#4 Old 05-18-2005, 08:00 PM
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hyundai tech
The TSB Duke is refering to is for the po722 code which is the pulse generator
reflash. There is also a new updated pulse generator for the vehicle. You need to have the code pulled from the TCM to verify.
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#5 Old 05-25-2005, 09:07 PM
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platt532003
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well wound up being an internal problem and had to have the whole tranny replaced. Ouch 1800.00 american dollars later the car seems to be ok man I dont know what it is about hyundais and trannsmision issues but everyone seems to have them with them.
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#6 Old 05-26-2005, 08:44 AM
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I am sorry, but I am quite sure that you got RIPPED OFF. If there were an internal problem, then the tranny would not shift normally again after switching the ignition off & on again. This behaviour is typical for an electronically malfunction. Was the CEL not on ??
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#7 Old 02-05-2010, 04:57 PM
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davidbougher
I'm having a very similar problem. Car when started will go 20 minutes not a problem and then down to "3rd Fail Safe" and check engine light comes on. I bought a scanner and had codes: P0722, P0734, P1529.

P0722 I replaced the pulse generator 43.00 for the part pretty simple to do. Erased the code with my scanner. That issue is gone, a week later and never came back.


Still have issue P0734 and P1529. I believe 1529 is just the TCM telling the computer to turn the light on because "something" is not right. I believe the not right part is the P0734.

I know it isn't a mechanical problem because if you pull over and turn the car off and back on it's good right from the start for another 15 minutes.

I've found a couple different responses about similar problems on the web.

1. replace trans. solenoid
2. Replace kickdown servo.
3. Replace temp guage.
4. replace 4th gear and bearing.
5. Change fluid and filter. (Not sure when/if my sister in law ever did this. Car has 77,000 on it.)


Has anyone out there had any experience with this at all? Other than the individuals who have posted this same problem and have gotten no responses?

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