Jamiehol

Active Member
Whilst driving along today I got a gearbox fault message on the instrument cluster, when this happpened I felt a coupe of hiccups in the power delivery.

Car is a 2002 4.6 V8 with 104k on it, I have only had it since April and have done about 1k in it, the longest journey being when I picked it from Newbury and drove to Suffolk.

I noticed when the fault occured it caused the gear display on the dash to disappear, and now everytime you turn the engine off you get the Gearbox fault message.

Changes seem ok apart from low speed ones, where it is clunky.

Haven't had chance to check the oil level or anything yet. Any pointers other than oil level or quality.
 
Check the battery voltage and that the alternator is charging correctly, it's a common message if the volts are low.
 
Datatek thanks for that will dig the mutlimeter out when i get home, I assume I am looking for around 14.4 volts with the engine running ?
 
Does your LOW range gears work? Sport/Manual button?

Asking because when my transfer ecu was faulty got same message and bad gear change
 
Does your LOW range gears work? Sport/Manual button?

Asking because when my transfer ecu was faulty got same message and bad gear change

Haven't checked low range, but certainley the Sport button is not having any affect in terms of lighting or display Sport on the message centre.
 
Further update after driving home from work, low range and manual are working ok but Sports isn't.

Going to check the battery voltage with the engine running after a cup of tea.
 
Well think I have sorted, box is behaving correctly Sport mode works, message centre displays gear and kickdown is working.

After testing the voltage with the engine running i am getting 14.04 volts, so had a look around no oil leaks around the connectors on the gearbox loom. However when checking the vacuum line to the box I noticed the TPS was unplugged, plugged it in and all seems to be running well.
 

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