Codes W203 C180 YR 2K

[delboy777]

Hi guys, Merry Christmas to you all.
I have a friend who has a problem with his 2000 y plate c180 w203. It runs very unevenly when cold at tickover, it rises and falls in RPM by as much as 500 rpm And when warm at junctions when turning all the extra strain put on the engine makes it want to stall when you pull away. He put a diagnostics machine on it (a little handheld one that he uses to switch off the management light that comes on every now and again ) and it came up with the following codes....P0101 and P0172 the first one, is it the MAF ? but dont know what the second is except it says System too rich Bank 1. Thanks for your input....Derek

 

[television]

When the engine speed goes up and down, it is always an air leak on the inlet somewhere.

At idle, the vacuum is at max, it sucks in air from the leak, the engine speed increases, as it increases the vacuum goes down, so does the amount of air going in and it slows down, only to repeat the cycle

 

[delboy777]

Thanks for that Malcolm i will pass that info on. Do you have any idea what the codes are ?...Derek

 

[television]

I will check the codes later in the day when I turn on the other computer

 

[delboy777]

Thank you Malcolm

 

[nickcc101]

Could be the inlet manifold gasket if not the MAF.

 

[television]

P0101 Maf or leak around the MAF

P0172 System too rich


It all points towards the MAF

 

[delboy777]

Thanks for that Malcolm, i will pass that on. Where would one source a MAF ?

 

[television]

Thanks for that Malcolm, i will pass that on. Where would one source a MAF ?

I am investigating a new supplier, but have info for the time being,, that leaves a Bosch service center at around £145

 

[delboy777]

How about euro car parts malcolm ?

 

[television]

How about euro car parts malcolm ?

If they have a Bosch MAF at a good price then take it