Noble running rough

[chrispeter40]

Hi got a problem with noble m12 GTO 3 and wondered if anyone might have an idea. Been told its running rough when its on idle. Diagnostics suggest it was the Lambda sensor as one bank of cylinders erratic. It was replaced but made no difference. The ECU was changed still no difference any ideas ?? The car runs great in every other way just the odd back fire when accelerating hard.

[GTO600]

Check the exhaust manifold isn't cracked if not l would get the injectors checked.

[chrispeter40]

Thanks for your help that will be a good start

[chrispeter40]

All sorted problem was injectors

[chrispeter40]

The outcome of the problem was that my noble has black injectors fitted, apparently my noble probably used some of the last black injectors on the shelf and these have a filter fitted, they had been collecting some rubbish from the fuel over probably many years and finally started to block the fuel. This made the sensor read all over the place. The car now runs better than it ever has before.

[mgbond]

chrispeter40 said:

The outcome of the problem was that my noble has black injectors fitted, apparently my noble probably used some of the last black injectors on the shelf and these have a filter fitted, they had been collecting some rubbish from the fuel over probably many years and finally started to block the fuel. This made the sensor read all over the place. The car now runs better than it ever has before.

That's good news and very interesting.

Do you have a pic of the old against new?

[chrispeter40]

Hi no pics it was repaired in kerridges I'll be honest I didnt know it was running rough until they sorted it out , it was the first 3 they had come across with those injectors