Possible fault with automatic gearbox

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

Med_tech3
Posts: 58
Joined: 01 Nov 2018, 12:18
x 1

Possible fault with automatic gearbox

Post by Med_tech3 »

I have recently purchased a 2008 C3 1.6 with an automatic gearbox. The car has done 56k miles. Every so often when moving off from stationary the car will jolt and it seems the gearbox is sticking a bit before engaging the gear. It also doesn't change gears until about 4k - 4.5k revs (not sure if that is normal), in sports mode it doesn't change until about 5k - 5.5k revs. Today on my drive home I was waiting by parked cars to let cars come through the gap, I tried to move off, the car freely revved up then suddenly engaged gear and jolted the car forward. It was fine for the rest of the journey. No error messages appeared. Is there an issue here? Is it worth me contacting the garage I bought it from?
Thanks
Simon
User avatar
GiveMeABreak
Forum Admin Team
Posts: 26024
Joined: 15 Sep 2015, 19:38
x 2980

Re: Possible fault with automatic gearbox

Post by GiveMeABreak »

Yes and yes Simon.

This probably has the sensodrive system and these can be notoriously difficult (and expensive) to troubleshoot and fix. Pop your VIN up so I can confirm which gearbox you have.
MGmike
Posts: 96
Joined: 29 Aug 2020, 18:29
x 13

Re: Possible fault with automatic gearbox

Post by MGmike »

I was just about to say WHS ^^^^
The sensodrive is actually a manual gearbox with a fancy (electric) clutch and gear change mechanism. Sounds like yours has a problem with the clutch part.

If you bought from a dealer you should have some warranty and I would defo be taking it back....
Med_tech3
Posts: 58
Joined: 01 Nov 2018, 12:18
x 1

Re: Possible fault with automatic gearbox

Post by Med_tech3 »

Thank you. The VIN is VF7**************[VIN obfuscated, can be read by forum staff]
Med_tech3
Posts: 58
Joined: 01 Nov 2018, 12:18
x 1

Re: Possible fault with automatic gearbox

Post by Med_tech3 »

I have just researched about the sensordrive gearbox. I don't have paddles on the steering wheel but do have an option for manual mode where you can use the auto lever to change gears up and down. I assume that is the same thing.
User avatar
GiveMeABreak
Forum Admin Team
Posts: 26024
Joined: 15 Sep 2015, 19:38
x 2980

Re: Possible fault with automatic gearbox

Post by GiveMeABreak »

Ok, so this is why we like to check from the VIN to make sure we are talking about the same thing and in your case it is not a piloted manual system, it is a proper automatic AL4 gearbox.

In one way this is simpler as they are less complicated as they have less components and control mechanisms to worry about, but you still have an issue.

Are there any warnings on the dash - especially messages or any symbols where the gear change selector is (like any dashes)?

It is of course possible that it needs the gearbox oil changing - but then again, you may have an issue with the solenoids in the hydraulic block - so it really needs either proper diagnostics to start with and that will cost you about £90 from a dealer - or take it back to the garage and reject it or allow them time to fix it.

I would of got back to you earlier, but have been out getting rid of my horrendous Bridgestone tyres and replacing them with Michelins.
Med_tech3
Posts: 58
Joined: 01 Nov 2018, 12:18
x 1

Re: Possible fault with automatic gearbox

Post by Med_tech3 »

Thanks Marc. No problem about the delay. I am just grateful for the help :) There doesn't appear to be any symbols on the dash or error messages except for the usual P, R and D. I will contact the garage I purchased it from tomorrow to see what they say.
User avatar
GiveMeABreak
Forum Admin Team
Posts: 26024
Joined: 15 Sep 2015, 19:38
x 2980

Re: Possible fault with automatic gearbox

Post by GiveMeABreak »

It should not be hesitating or jerking at all. You need to have confidence in it and it needs to be safe on the roads and hesitating is not safe when at a junction, so be nice but be firm.
Med_tech3
Posts: 58
Joined: 01 Nov 2018, 12:18
x 1

Re: Possible fault with automatic gearbox

Post by Med_tech3 »

Is the gear change at 4.5k revs normal? In sport mode it doesn't change until about 5.5k. It seems high to me but just wanted to check.
Med_tech3
Posts: 58
Joined: 01 Nov 2018, 12:18
x 1

Re: Possible fault with automatic gearbox

Post by Med_tech3 »

Update - took it back to the garage. They had it two days and told me they will change the gearbox and solenoids. I collected it today. As soon as I put it into drive it juddered and clunked like the gearbox was trying to engage. After that it was fine until I stopped in stationary traffic. As soon as I moved off it juddered and the handbrake and ABS lights came on briefly. It did this a couple of times. Everytime the car is started and put into drive it clunks before engaging. Any ideas on the issue so I can go back to the garage with a bit of knowledge? Thanks
Med_tech3
Posts: 58
Joined: 01 Nov 2018, 12:18
x 1

Re: Possible fault with automatic gearbox

Post by Med_tech3 »

Checked over the car. There is brown liquid, looks like dirty coolant, dripping from the joint between the gearbox and the drive shaft and the coolant level is below minimum (coolant is a nice red colour).
Med_tech3
Posts: 58
Joined: 01 Nov 2018, 12:18
x 1

Re: Possible fault with automatic gearbox

Post by Med_tech3 »

I can also move the gear lever out of park without having to put my foot on the brake.