SD4 Engine flat spot

Have you checked the spark plugs? What's your mileage?
I replaced mine last week (and air filter) with 118,000 KM and it fixed the stumble/hesitation leaving a stop.

(15-04-2019 08:05am)carlos50 Wrote:  Tried the reset, it didnt cure the problem. I also changed the MAF sensor last week, its helped, as has the new air filter, 99 octane fuel, a bottle of Techron fuel treatment etc. but still have a definite problem with anything but the lightest throttle use.

If you’re using 99 octane fuel in a SD4 engine or changing spark plugs, you’ve got a major problem!

OP does say in his post that he has an Si4 Steve.........

He doesn’t Tim. In fact, this was his last post.

(29-07-2013 12:20am)Stufrost Wrote:  OK -Useful feedback. I'm going to buy the 'chip my diesel' chip at A$400. Don't feel I should have to given its a problem that shouldn't be there and the car's just a year old but I'll do it anyway and let you know the results on these pages.

Edit: Ah, just read the whole 'SD4 Engine flat spot' thread. Just seen Carlos 50’s post. He wasn’t the OP but jumped in on the thread later. I didn’t see his first post in this thread stating what engine he had.

Sorry I thought you were referring to Carlos50