D3 EGR Valve Removal Latest Options?

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Originally Posted by Mk1_Oz

Hmmm sounds like I may as well just install new valves!

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No. Just remove them, clean and ensure they are functioning. Then reinstall and fit emulators. For emulators to work the EGR must be in the fully closed position, so it can then be unplugged and so inoperative. Then plug in the emulator to emulate a functioning EGR. Alternatively, remove the EGR completely, block the exhaust feed and block/cycle the coolant hoses and plug in emulators.

At least some EGR remaps don’t fully disable the EGR. So the EGR still need to be operational. Although the idea is reduced recycling.

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Originally Posted by rar110

No. Just remove them, clean and ensure they are functioning. Then reinstall and fit emulators. For emulators to work the EGR must be in the fully closed position, so it can then be unplugged and so inoperative. Then plug in the emulator to emulate a functioning EGR. Alternatively, remove the EGR completely, block the exhaust feed and block/cycle the coolant hoses and plug in emulators.

At least some EGR remaps don’t fully disable the EGR. So the EGR still need to be operational. Although the idea is reduced recycling.

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Why go through all that hassle of removing them, closing them, reinstalling etc - why not just blank them and get either a remap to remove the the function or plug in emulators.

garry

Garry
As I said, removing is the alternative. I’m not familiar with the tdv6 only the tdv8.
In the case of the tdv8 it’s not at all easy to blank at the turbo end. Blanking at the EGR end is best with EGR out or only if confidant the EGR is fully closed before unplugging, then plugging in the emulators.

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Originally Posted by rar110

... Then reinstall and fit emulators...

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Good source of emulators for TDV6? Rough cost? They literally plug into the loom in place of the EGR valves?

Only one source.
Yes. If EGRs closed (on shut down) unplug the EGR so no further EGR activity. Then plug in the emulator.

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Originally Posted by loanrangie

Curious , but if the electric actuators still work how would the system know if the mechanical valve isn't connected ?

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Air flows don’t balance.

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Originally Posted by Tombie

Air flows don’t balance.

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As detected by the Maff .

As I said - for a D3 - just blank the EGRs, remove the butterfly, either remap to remove the EGR function (contact Bell Auto Services - BAS in the UK) or find emulators to simulate the EGRs.

Too easy but not cheap but cheaper that replacing 2 EGRS - saves the knuckles and a lot of stress.

In my car I had the EGR issue and this was well before remaps to remove EGRs and emulators. So I bought some new EGRs (from the UK and cheap) with the intent of changing them. Just playing around I plugged the new EGRs into the wiring loom while not installed on the engine - all faults gone and EML went out. So I blanked my engine (Euro 4), removed the butterfly, expended the EGR wiring harness and mounted the new EGRs in the box next to the ABS modulator. This was about 6 years ago and never had a problem since. The new EGRs are acting as my emulators.

If I had replaced the EGRs at the time I would probably be looking at doing the same again - now. In normal mixed driving they do not last all that long.

These days - just blank the dead EGRs - they don't need for them to be closed and remap the EGR function out or get emulators.

Garry

Not quite Garry... you can’t just blank EGRs on later D3s. There is a cross over point where that no longer works.

And be wary, without mapping them out it’s possible to change fuel mix and damage engines...

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Originally Posted by Tombie

Not quite Garry... you can’t just blank EGRs on later D3s. There is a cross over point where that no longer works.

And be wary, without mapping them out it’s possible to change fuel mix and damage engines...

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Yes I agree but I would have thought this vehicle would still be Euro 4 so applies - Pete Bell can certainly advise. With the 2.7s, these days the way to do it is as you suggest and that is to get a remap to sort the lot out.

I must admit I thought the cross over for blanking/remapping EGrs etc issues was the changeover from the 2.7 to the 3.0.