[Clan]

Originally Posted by TurboDiesel2006

Can anybody help please. I have a 2006 MY V70 D5 185 Manual which is showing the dreaded Engine System Service Required fault message and the car is in low power mode when it feels as it the turbocharger is not working. The fault codes are:
ECM-4430 EGR Valve
ECM-6820 Turbo actuator. Signal too low
ECM-4510 EGR cooler bypass valve. Signal too low
ECM-6690 GLow relay control
ECM-6500 Engine Pads
ECM-4450 EGR position sensor. Faulty signal

Also the real time data stream shows the EGR Valve at 100% irrespective of throttle position.

From my previous experience and reading the SkintKnuckles thread my analysis is that the EGR valve is stuck i.e. 4430 is the primary issue and all the other codes except 6690 relate to the this problem.

About 3 years and 25,000 miles ago I removed and cleaned the DPF, cleaned out the EGR valve, valve/manifold pipe, manifold and replaced the throttle body and fitted new injectors. This was all done with the EGR still on the car and since then the car has been great. The card has been laid up for the last 6 months but has been started up and run for 15-20 minutes to get really warm every couple of weeks with no problem messages displayed. Sod's law that the moment I un-sorn the car and tax it the Engine System Service message comes up.

Yesterday I tried to take out the EGR to try and get better access but the V clamp that connects the cooler to the metal flexible pipe completely defeated me. I removed the two bolts, cables and clips at the front of the EGR, I also removed the pipe from the air filer assembly down to the turbo that runs alongside part of the cooler so as to get access to the cooler bracket mounting bolt and V clamp. I removed Cooler mounting bolt and loosened off the V clamp jubilee clip as much as possible. The EGR was then loose at the front but I could not get the V clamp to budge at all.

The EGR had a layer of soot but didn't look clogged up. As my wife needed the car today I cleaned the EGR anyhow and put it all back together but I still have exactly the same problems and error codes.

Questions:
Am I on the right path in thinking I have a stuck EGR valve. I assume that lack of use has caused the soot to solidify more than normal and this has jammed the valve.

Can it I release the EGR valve/piston if I can get it off.

If so how do I get the V clamp to separate and release. It looks like two separate semi-circles with a jubilee clip welded to the top semi-circle. I tried using a flat head screwdriver to pry off the top half but no joy. Access is limited so experience is probably the best tool.

Am I better off trying to release the flexible pipe at the exhaust end and taking out the EGR+cooler+pipe? If so how do I get to it as it looks to be shielded to access from underneath the car?

Is the only solution a new EGR (which I think is £400 - £500 and I would rather not have to spend this) then I still have to get the V clamp off.

Any ideas or experience to share please.

You have position sensor codes , so either this is faulty or the valve is stuck , It is most likely the position sensor , you need to remove it , then you will be able to see the end of the motor which drives the EGV valve , you should be able to press the arm in wards under spring pressure and it should spring back out , it should be a smooth action , you might find you can not move it so need to find out if it is the motor or the vale sticking . see how you get on ...