Madmustang
Well-Known Member
Dont forget to keep the EGR valve and clean it up as you are going to have to put it back on for next MOT
Alibro
Well-Known Member
I never heard of a car failing MOT cause of an EGR Bypass.Dont forget to keep the EGR valve and clean it up as you are going to have to put it back on for next MOT
Anyone else heard of it happening?
Madmustang
Well-Known Member
You will get used to itI never heard of a car failing MOT cause of an EGR Bypass.
Anyone else heard of it happening?
Madmustang
Well-Known Member
all I am saying is if you get caught you will need to put a egr back on
Nodge68
Well-Known Member
I never heard of a car failing MOT cause of an EGR Bypass.
Anyone else heard of it happening?
In May the MOT is being revised to include EGR valves where visible (it is on the TD4) and a load of other stuff too like LED bulbs and stuff. It's going to affect the wife's LED Angel Eyes on her BMW E46 vert too.
Alibro
Well-Known Member
Ahh, that makes sense now.In May the MOT is being revised to include EGR valves where visible (it is on the TD4) and a load of other stuff too like LED bulbs and stuff. It's going to affect the wife's LED Angel Eyes on her BMW E46 vert too.
Unless like me you...... ahem, adjusted the EGR so that it is blanked but isn't obvious.
Having said that I sold Bertie a while ago and the current Blue still has the EGR in place. I just gave it a clean and refitted.
Cheers yes have done.Dont forget to keep the EGR valve and clean it up as you are going to have to put it back on for next MOT
Rank Amatuer
Well-Known Member
In all the years I have driven my Freelander it has consistently returned an average 32.7mpg, according to the on-board display. A few weeks ago it began to run cool; thermostat knackered. As I posted earlier I replaced the thermostat, and while I was at it I fitted an EGR blanking plate. Now here's what I found:-
January: A 1,000 mile round trip from Argyll to the west country via the home counties. The usual mixed back of 'A' roads, motorways, roadworks and town driving. That's two tanks of fuel; the first one premium diesel, the second one the cheapest. Average MPG 32.7
March: The same journey, but with a u/s thermostat. Same mix of premium then ordinary fuel. Average MPG 31.
May: Here we go again. Same journey with new thermostat and EGR blanking plate fitted. Now here's the difference. With the first tank of premium fuel I averaged 37.2 mpg, something I have never achieved except on interminably long stretches of 60mph roads with average speed cameras. On the return trip with a tank full of the cheaper stuff the average MPG slowly fell back to 35.5mpg.
To be honest I didn't notice any change in handling, hill climbing or throttle response. Even by sticking the car into sports mode and driving it like I stole it I struggle to get the MPG down to pre-EGR blanking levels.
Now, I don't expect the on-board MPG figure to be accurate, but I do expect it to be repeatable. Running on premium fuel does look as though it gives improved MPG, but not quite enough to compensate for the price hike. I'll probably continue to use it on long journeys and in the run up to the MOT.
Conclusion? I should have blanked off the EGR years ago.
And a big thank you to the people who contributed to this thread who persuaded me to give it a go.
P.S. The engine warning light has not come on, though there is an OBD fault code indicating an EGR valve problem.
January: A 1,000 mile round trip from Argyll to the west country via the home counties. The usual mixed back of 'A' roads, motorways, roadworks and town driving. That's two tanks of fuel; the first one premium diesel, the second one the cheapest. Average MPG 32.7
March: The same journey, but with a u/s thermostat. Same mix of premium then ordinary fuel. Average MPG 31.
May: Here we go again. Same journey with new thermostat and EGR blanking plate fitted. Now here's the difference. With the first tank of premium fuel I averaged 37.2 mpg, something I have never achieved except on interminably long stretches of 60mph roads with average speed cameras. On the return trip with a tank full of the cheaper stuff the average MPG slowly fell back to 35.5mpg.
To be honest I didn't notice any change in handling, hill climbing or throttle response. Even by sticking the car into sports mode and driving it like I stole it I struggle to get the MPG down to pre-EGR blanking levels.
Now, I don't expect the on-board MPG figure to be accurate, but I do expect it to be repeatable. Running on premium fuel does look as though it gives improved MPG, but not quite enough to compensate for the price hike. I'll probably continue to use it on long journeys and in the run up to the MOT.
Conclusion? I should have blanked off the EGR years ago.
And a big thank you to the people who contributed to this thread who persuaded me to give it a go.
P.S. The engine warning light has not come on, though there is an OBD fault code indicating an EGR valve problem.
GrumpyGel
Well-Known Member
That is the beauty of LZ - as well as having heaps of knowledge on the cars, it gives you the motivation and confidence to try stuff
A free tank of fuel every 10 fill ups is definitely worth trying to achieve!
I would have thought that as the EGR is emissions related, if there is a current code for it, then the MIL light should be illuminated. Does the light come on on the self test when you turn the ignition on?
A free tank of fuel every 10 fill ups is definitely worth trying to achieve!
I would have thought that as the EGR is emissions related, if there is a current code for it, then the MIL light should be illuminated. Does the light come on on the self test when you turn the ignition on?
I fitted an egr delete kit (which is just a tube with all the right bits welded on which replaces the original egr valve) on my previous TD4, and the mpg improved, it did get 41 mpg once or twice when it was running in front wheel drive mode, lost 1 or 2 mpg when the vcu was replaced. Got a newer TD4 this year and didn't bother with the egr thingy, just cleaned it all out (with 117,000 miles on it there was a lot of crud), tested the valve was opening and closing with a vacuum pump, put it back together again and ran it all clean and like factory for a while. Then I thought, 'don't want to do all that again', so pulled the small tube off the egr valve and pushed a screw into the pipe which had a head big enough to block the tube off, and pushed the tube back on the valve. Now it looks standard for MOT time, but the valve isn't being opened, so no manky exhaust fumes are being blown into the inlet manifold.
MollyNomad
Well-Known Member
I never heard of a car failing MOT cause of an EGR Bypass.
Anyone else heard of it happening?
Ali, on my MOT test it wasn't mentioned at all. Did fail on a couple other things though.
Nodge68
Well-Known Member
I never heard of a car failing MOT cause of an EGR Bypass.
Anyone else heard of it happening?
It is now a possibility that a fail could issued for an EGR bypass. The EGR must now be functional, or at least look functional. Obviously if there's a bypass that looks different from that fitted by the factory and it's spotted, then theoretically it'll fail.
Rank Amatuer
Well-Known Member
My F2 passed its MOT today with the EGR blanked off.
Nodge68
Well-Known Member
It's a visual inspection only, so if it looks OE, it'll pass the MOT.
tlo
Active Member
Not sure if you were asking me
Rank Amatuer
Well-Known Member
They stuck a probe up the tailpipe, but as you say, so long as nothing has been visibly tampered with you should be okay.
https://assets.publishing.service.g...-standards-for-road-vehicles-19th-edition.pdf
The absorption limit for my car is 3, it scored a mean value of 0.78
