99 town car - overdrive light flashing

jshee08 · #1 May 27th, 2008, 09:53 PM

1999 town car with the od light flashing in my speedo display . new one for me , any one ever run across this one ? everything is working fine . i tried pushing the od switch on the column to see if it made a difference but it did nothing .

Tman70 · #2 May 27th, 2008, 11:44 PM

It means there is an active fault in the system which is being compensated for. Get the codes read ASAP before it is unable to compensate any longer.
p.s. The Owners Manual says to take it to a dealer immediately...

jshee08 · #3 May 30th, 2008, 08:30 AM

ok ,i got the coed for the light that was flashing , it is po 0713 which is saying the trans fluid is high , i did a test with a scanner with an identical car (99 tc) and the trans temp fluid was actually higher (the farenheit ) there is also a another reading for this and here it is ( trnfluidtemp(v) now this reading was low on the non coded car (about 1.8 and even lower at times , and on the car with the light flashing it was 4.75. these readings were taken from the data selection from a snap on scanner . any ideas ? bad temp sensor? thanks !

jshee08 · #4 June 7th, 2008, 07:02 PM

it turned out to be the temp sensor , which is the hardwire that connects into the transmission and runs the shift servos and reads temp.

v8_dave · #5 June 9th, 2008, 08:22 AM

Thanks for the update! Glad to see it was a simple (ish?) fix!