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Old 04-23-2010, 08:12 AM   #1 (permalink)
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My wife has a 2003 elantra that has developed a strange problem. When selecting reverse (automatic) their is a noticable delay(3 sec appox ) before it engages. Then if i select drive when it is the is a hash engament and it seems to go straight into overdrive. The only way to stop this is after the transmission is warm turn the car off and restart it. When thtrans mission is warm there is no problem except only a slight delay when reverse is selected. Took it to a transmision guy and he said it might be the cmputer. Any suggestions from the forum ?

Thanks Paul
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Old 04-23-2010, 09:40 AM   #2 (permalink)
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Did you change the fluid? Doesn't sound like the computer. Is there a check engine light?
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Old 04-24-2010, 12:08 AM   #3 (permalink)
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QUOTE (jsinton @ Apr 23 2010, 08:40 AM)
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Did you change the fluid? Doesn't sound like the computer. Is there a check engine light?
Yes the fluid has been changed and no there is no check engine light on. The place i took it to said he disconnected the wiring harness to the transmission and the delay was gone. He said he put the computer on a diagonistic machine and it was giving or recieveing strange signals.
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Old 05-03-2010, 07:17 PM   #4 (permalink)
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MIL ??

Input or output speed sensor will make TCM start A/T in 2 or 3....

Scan the TCM and PCM for DTC
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