Hello there!
Thanks so much for the heads up.
In the end, I had to take my car to a trusted mechanic & we went for a test drive. He disconnected the Air Flow Meter and ther problem seemed to have stopped. He ordered a new one (£120 incl. parts & labour), I drove away & the problem is still there!
I will mention this EGR fault to him - is this the same thing as the ECU/'brain' of the car?
Does this mean my car will need to be put on a diagnostic machine?
May I ask you how much it cost to sort yours out?
Sorry for all the questions, but hope you can help!
All the best,
Tony.
|
Tony
Anyone who just swaps parts without doing the proper checks, or even reading the live-data, isn't much of a mechanic.
Take it to a diesel specialist for a proper diagnosis.
|
|
|
If it's the EGR valve there will be error codes. You'll need to take it to someone who can read the error codes.
No idea how much if it is EGR because mine is a company vehicle.
|
If it's the EGR valve there will be error codes. You'll need to take it to someone who can read the error codes.
I had a similar problem, but this wasn't producing any error codes - apparently there was a dodgy connection to the camshaft position sensor which was causing a number of problems including this. Now this has been seen to (under warranty, as mine is a 55 reg) the car drives appreciably better. Might be something for the OP to ask about.
|
You almost certainly have an Exhaust Gas Recirculating Valve (EGR) valve that is stuck slightly open and should be replaced . IIR they are about £45- but may be a little more now- my last was fitted 2 years ago. . The valve sits at the front offside of the engine bay. It feeds in a little exhaust gas under light throttle conditions to improve and cool the combustion. If it sticks open a little it causes the problems you describe but will not generate any fault codes. Your gentle throttle increase feeds in more fuel but there is not enough oxygen to burn it cleanly as there is still some exhaust gas where there should be fresh air- hence the misfire. Eventually it will stick fully open then you will get clouds of black smoke and poor performance and then you will see the fault codes. With 112k on the clock I'm on my third valve, though this one has been good for 40k- never missed a beat.
|
|
Just another thought- if performance is always down rahter than occasionally, another fault could be a split air hose between the intercooler and the EGR valve - the 2.5 inch hose always splits on the inside of the bend just beneath the EGR valve- if this is the problem you will hear a loud hiss on acceleration as the turbo feeds in, lots of black smoke and poor performance generally. EGR valve still first suspect though.
|
|
|
|
|
