Renault 19 auto gearbox fault

[moomoojaj]

My Renault 19(74500mls. oil was changed at 63000mls) has developed a fault with its auto gearbox. Occasionally a warning light on the dash comes on and the gearbox changes down one gear and it stays in that gear, even when I come to a stop. When I turn off the engine and re-start the fault is cleared. It then runs ok for a while only to happen again. The car drives fine any other time. Any suggestions.

[ianess]

Was it the engine or the gearbox oil that was changed?    Sounds to me as if the gearbox is low on oil......look for a separate dipstick.   It probably will be that simple....auto boxes are usually ultra reliable though expensive to fix when a fault does occur.   Good luck.

[moomoojaj]

Sorry for not being clear. It was the gearbox oil that was changed at 63k mls. As for the diptick, there isn't one or a level sight plug. Tha gearbox has to be plugged into a computer to have the oil changed. There is no evidence of any oil leaks but I see where you are comimg from.

[CLUMP]

your car is going into "limphome mode" which means theres a fault you need to take it to a garage with suitable diagnostic eqipment.if you want to check you gear box level its a bit fiddly but possible..

under the gear box theres 2 bungs in sump pan one with a square hole and one with a triangle hole only touch the square hole.

1 start engine and run in park have engine running during the level check

2 with a container underneth remove the bung with square hole ( the hole in sump has a tube inside so dont panic)drain until oil slows down like a fast drip and refit bung

3 turn off engine

4 then add 1/2 ltr through dipstick tube

5 if no oil comes out fill until it does come out