Redsfan2008

On 9/8/2022 at 6:53 PM, jdragon said:

Run a bottle of cataclean through it. Quickest and cheapest option right now.

And be sure to drive it until you're display is showing 50 miles left, so it takes more through the system than the recommended 15 minutes on the bottle.

Report back the outcome.

Hi, sorry it’s been so long letting you know. I had too much fuel in the car and had to use it before putting the cataclean in.  I have now used the cataclean and the difference is quite remarkable. Much smoother at idle and mpg is better too. Good advice thanks. I intend to use a bottle about every 3 months. Cheers. 

11 hours ago, Stevey Y said:

Hi get the car scanned for codes, it sort of helps with the guesswork situation if no codes then you have an uphill task.

Steve.

Cheers Steve, I’ve got an OBD2 plug so I’ll have a scan to see if anything comes up. Thanks again. 

8 minutes ago, jdragon said:

Might be worth checking the glow plug caps are well seated too.

Sometimes problems can be resolved by the most simplest interventions.

 

To give an example: abs light came on my in-laws dash. Garage quoted them £400/1000 to fit a used/new part respectively.

After a little Google and 5 minutes looking at the car, I discovered it was a blown fuse.

 

I guess there are so many things that can happen to a modern car aren’t there. First thing I’ll do is put some Cataclean in and see if that helps. Cheers. 

4 minutes ago, jdragon said:

Run a bottle of cataclean through it. Quickest and cheapest option right now.

And be sure to drive it until you're display is showing 50 miles left, so it takes more through the system than the recommended 15 minutes on the bottle.

Report back the outcome.

Will do thanks. I’ll let you know if it makes any difference.  
 

Thanks for your reply jdragon. The car has done 128000 miles so quite a lot, but full service history. My driving is motorway/urban mix. But to reiterate, the car drives perfectly, and responds to throttle inputs very well. 

Hi everyone, my A4 (B9) tdi ultra seems to be a bit lumpy at idle. Runs like a dream whilst driving but at idle it rumbles like a tractor and the gear lever shakes. Any ideas?