Cooper645
Active Member
- Joined
- Oct 15, 2019
- Messages
- 30
- Reaction score
- 32
- Your Mercedes
- C Class C320 CDI 2009 OM642
Hi guys, new here and these forums have proved helpful for various jobs but I’m struggling to find the info I need.
The issue is that I occasionally lose boost, sometimes cruising on cruise control, other times when accelerating hard to overtake and then the boost goes and I’m dead in the water with a sluggish car.
The issue can be fixed with a key cycle and I can continue my journey.
I have used an OBD2 and the following codes were thrown up:
P0299 - Turbo charger low boost
P1239(00) - Speed Fuel pump positive feed fault
and the other day a CEL and :
P109A(00)
I have cleared the faults and not seen the P109A or CEL since, but the others still pop up.
I plan to:
-change the two red turbo seals
-fit new air filters
-fit new MAP sensor
-have but not fit a crankshaft position sensor (don’t want to get caught out)
considered possibly changing the fuel filter also.
Anything else I should be checking for?
Coops
The issue is that I occasionally lose boost, sometimes cruising on cruise control, other times when accelerating hard to overtake and then the boost goes and I’m dead in the water with a sluggish car.
The issue can be fixed with a key cycle and I can continue my journey.
I have used an OBD2 and the following codes were thrown up:
P0299 - Turbo charger low boost
P1239(00) - Speed Fuel pump positive feed fault
and the other day a CEL and :
P109A(00)
I have cleared the faults and not seen the P109A or CEL since, but the others still pop up.
I plan to:
-change the two red turbo seals
-fit new air filters
-fit new MAP sensor
-have but not fit a crankshaft position sensor (don’t want to get caught out)
considered possibly changing the fuel filter also.
Anything else I should be checking for?
Coops