Member, P500, DSC On (>600)
Join Date: May 2004
Thanked 56 Times in 51 Posts
To finish this off :
After almost 3 weeks I picked my car up yesterday and ragged the nuts off it !!! All seems good although at one point in traffic the temperature gauges started to creep past mid point, I'll have to keep an eye on that although I did have a new water pump fitted about 2-3 years back...
Anyway to round off, my Indy struggled with this as the only codes he could find were the same as I'd got along with a fuel pump code. So he changed the fuel pump and nothing improved.. so he took the fuel pump off and fitted it to another car and it worked fine on that...
MAFs I'd changed with Bosch ones from Germany with the correct serial numbers for our cars.
Front O2 sensors had been replaced last year so he doubted it was those.
Having cleared the codes initially he struggled to find any more information so it was a case of guess work as the car was now only starting and then almost immediately stalling.
Symptoms really didn't appear to tie in with bad CPS as I've experienced those in the past and would have picked up on it way back.
Anyway we had a really good chat about what I'd experienced and how it felt etc and we went through various ideas, such as plugs, coils, injectors, vacuum leak, vanos solenoids and so on...and one by one we discounted them, the bottom line was that it felt like fuel starvation but originally only under certain conditions which were usually when pressing on hard, overtaking and leaning on the throttle heavily.
So back to the fuel supply and a close look at the fuel filter and wallah, we found upon close inspection it was partially blocked and restricting fuel to the pump which had been working overtime and we think was intermittently curling up and almost dying.
In summary - after a new fuel pump, fuel filter, fuel tank sensor and a pressure valve have been fitted warp speed is back on tap...
Sadly though the total bill came to £2.70 less than a 2003 C200 Kompressor with 90k miles on the clock cost me to buy to run around in whilst my M was off the road...
Why is the slowest person always at the front of the queue
Last edited by SeeSure; 4th July 2019 at 12:53 PM.