[jonnybrs3]

hi all

 

the yellow emission control light has come up on the car and sometimes the car doesn't start and when it does its sounds a bit lumpy and I have to rev it up to stop it from stalling

 

anyone got any ideas on what this is?

 

thanks

[RS3Dell]

hi all
 
the yellow emission control light has come up on the car and sometimes the car doesn't start and when it does its sounds a bit lumpy and I have to rev it up to stop it from stalling
 
anyone got any ideas on what this is?
 
thanks

Needs a scan on Vagcom or like wise mate.

Dell.

[Mattjj82]

I would limit driving or taking it very easy if you do have to before you get it scanned and diagnosed with those symptoms mate

hi all

the yellow emission control light has come up on the car and sometimes the car doesn't start and when it does its sounds a bit lumpy and I have to rev it up to stop it from stalling

anyone got any ideas on what this is?

thanks

[jonnybrs3]

just had rac come round and plugged in his computer

 

2 faults came up

 

running rich

high pressure fuel (due to high pressure fuel pump)

 

the car should be fine im gonna drive it like normal and ring mrc to prob get it mapped again

[JayRS3]

Have you gone really low on fuel before? I know that can cause the car to run rich which could lead to serious issues = engine

[RS3Dell]

Have you gone really low on fuel before? I know that can cause the car to run rich which could lead to serious issues = engine

 

Jay the fuel not low but the car really is !    

Fuel rail pressure switch at a guess 

 

Dell.

Edited by RS3Dell, 12 September 2017 - 05:02 PM.

[JayRS3]

Was you coming castle Combe? Take it that's chucked a spanner in the works.

[Nath]

Could be a faulty o2 sensor? 

[RS3Dell]

Could be a faulty o2 sensor? 

 

Nath.

 

Went the RAC checked the ECU one would think it show an O2 fault not a high fuel pressure one ? 

 

I understand the fuel rail pressure sensor on the 8v can be troublesome but dont know about our 8P 

 

But i can see were you coming from mate 

 

Dell.

Edited by RS3Dell, 13 September 2017 - 05:44 AM.

[JayRS3]

8P ^^

[jonnybrs3]

I forgot about castle coombe this weekend

 

the car drives fine and it has been like it for a while, the rac bloke who came out to the car says its all fine and I can drive it how I like

 

might need the map tweaked a bit so it stops the warning lights coming up

[jonnybrs3]

and no jay I haven't let it run low on fuel I never go below a quarter of a tank lol

[red14]

I had a mapped turbo car a long time back and was told the emission light would come on at times, seems to happen when your car is telling the computer something it doesn't understand. So, basically, it could be a case of "computer says - no!".

If it drives ok and you can find no other issues then it might only be a huffy ECU.

[JRS3]

High pressure fuel pump on its way out?  My car did the same with a loba pump.