eec 636 (Transmission fluid temperature (TFT) not at expected value.

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Old 01-24-2005, 10:43 PM
87f150xlt's Avatar
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eec 636 (Transmission fluid temperature (TFT) not at expected value.

My 94 E150 5.8 EFI has been running rough, error codes are 636, 122 and 121. Do I need to replace Trans temp sensor?
 
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Old 01-25-2005, 12:23 AM
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121= Throttle Position (TP) sensor out of range - TPS
122= TP low (possibly grounded or open circuit) - TPS
636=Transmission Oil Temperature (TOT) sensor out of range
Sounds like you have a bad ground somewhere to me.
Fix the TPS first, it could be causing the transmission to overheat.
Alan
 



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