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D4 VEA 'check engine' light / EGR fault thread

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Old Sep 18th, 2021, 13:57   #2491
JamesAtthews
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Afternoon, I recently took my egr valve and cooler off to resolve the blocked cooler issue. My car has just passed 152k, and has had the numerous fixes from Volvo via the original owner. I split the cooler and filled it with brake cleaner, but this did nothing at all. I ended up using Mr muscle oven cleaner and a jet washer. What a perfect job this was. It took a few attempts due to the amount of black crop inside the cooler, but it ended up working perfectly. A word of caution about the use of Mr muscle and contact with aluminium, it will attack it if you leave it on for a prolonged period. Simply spray it into the finned pathways, leave it for a couple of minutes and apply the pressure washer, and it should be OK. Mine has been running much better for the last 8 weeks, and the code hasn't come back.
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Old Sep 18th, 2021, 17:13   #2492
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Quote:
Originally Posted by JamesAtthews View Post
Afternoon, I recently took my egr valve and cooler off to resolve the blocked cooler issue. My car has just passed 152k, and has had the numerous fixes from Volvo via the original owner. I split the cooler and filled it with brake cleaner, but this did nothing at all. I ended up using Mr muscle oven cleaner and a jet washer. What a perfect job this was. It took a few attempts due to the amount of black crop inside the cooler, but it ended up working perfectly. A word of caution about the use of Mr muscle and contact with aluminium, it will attack it if you leave it on for a prolonged period. Simply spray it into the finned pathways, leave it for a couple of minutes and apply the pressure washer, and it should be OK. Mine has been running much better for the last 8 weeks, and the code hasn't come back.
Nice work. Did you try any cleaning of the valve while it was off?
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Old Sep 18th, 2021, 22:09   #2493
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Zeb, apart from a very thin layer of soot on the egr valve interals, it's was fine, springing back nicely and moving freely. I didn't touch it with the cleaner, I just wiped it and put it back together. The main mess was the cooler system.
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Old Sep 21st, 2021, 16:01   #2494
TAZANDSHANE
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Default VEA D4 Update

Thought I'd post this as a source of info for those wondering about the longevity of the VEA D4 given recurring EGR/EGR Cooler Issues. I bought my V70 D4 approx just shy of 2 years ago with 105K miles on the clock. It had two EGR coolers and one EGR valve replacement, as well as the cylinder head and valves, disassembled and repaired. The EGR/Cooler work was carried out at 82k, the car has now just reached 158k with no issues whatsoever.

My driving has very much been long distance which is probably optimal to avoid soot buildup etc. I have just had the ECM software update carried out as part of the manifold recall (yes I know!)

Wondering if anyone else has had a similar outcome after the rectification work has been carried out?
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Old Oct 7th, 2021, 17:48   #2495
jneish
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Default Check Engine, P04D9, Reduced Engine Performance, P00BC

Take a look at my problems, now resolved
https://www.volvoforums.org.uk/showp...&postcount=465
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Old Nov 2nd, 2021, 12:22   #2496
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Question Engine braking

Hello,
I was not able read the whole thread but studied the issue comprehensively.
I bought used V70, D4204T20 (88kW D2) with around 175k kilometers on the clock. According to Volvo, the car is up to date with all modifications done by previous owner. In last two months the turtle started showing up. The error code is P00BC00.
I tried following:
- inspected leaks
- fitted a new MAF
- cleaned MAP
- cleaned EGR and cooler
The error shows up still. It leaves me puzzled. The error pops up usually when I brake using engine downhill.
I have data when from one of the occurrences. After the error EGR went to 0%.



I was checking also coincidence of exhaust and intake pressure reading.

AFAIK it leaves with options:
- sticking EGR - EGR clicks when closes otherwise the movement fluid.
- broken MAP sensor
- clogged pipe to the Exhaust Pressure sensor (EMAP). I had the sensor out and the pipe looked ok but could be clogged elsewhere.
I do have other data logged and can generate graphs from different sensors.
Thank you for any hints.

Last edited by Bican; Nov 2nd, 2021 at 12:29.
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Old Nov 2nd, 2021, 14:32   #2497
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Originally Posted by Bican View Post
Hello,
I was not able read the whole thread but studied the issue comprehensively.
I bought used V70, D4204T20 (88kW D2) with around 175k kilometers on the clock. According to Volvo, the car is up to date with all modifications done by previous owner. In last two months the turtle started showing up. The error code is P00BC00.
I tried following:
- inspected leaks
- fitted a new MAF
- cleaned MAP
- cleaned EGR and cooler
The error shows up still. It leaves me puzzled. The error pops up usually when I brake using engine downhill.
I have data when from one of the occurrences. After the error EGR went to 0%.

I was checking also coincidence of exhaust and intake pressure reading.

AFAIK it leaves with options:
- sticking EGR - EGR clicks when closes otherwise the movement fluid.
- broken MAP sensor
- clogged pipe to the Exhaust Pressure sensor (EMAP). I had the sensor out and the pipe looked ok but could be clogged elsewhere.
I do have other data logged and can generate graphs from different sensors.
Thank you for any hints.
This thread refers to EGR problems with VEA engines (D3 and D4) and not your older D2 type. You would hopefully get more replies if you started a thread in the correct area of the forum where your engine is discussed, such as here... https://www.volvoforums.org.uk/forumdisplay.php?f=112
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Old Nov 2nd, 2021, 15:05   #2498
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This is the VEA engine (D4204T20), 4 cylinder, 1969 ccm. EGR is the same as on D4 down to the part number. I'm experiencing similar issues and symptoms.
https://en.wikipedia.org/wiki/Volvo_...cture#D4204T20
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Old Nov 2nd, 2021, 15:12   #2499
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Quote:
Originally Posted by Bican View Post
This is the VEA engine (D4204T20), 4 cylinder, 1969 ccm. EGR is the same as on D4 down to the part number. I'm experiencing similar issues and symptoms.
https://en.wikipedia.org/wiki/Volvo_...cture#D4204T20
My apologies!

I'd guess that the EGR valve is sticking open
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Old Nov 2nd, 2021, 15:26   #2500
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That is my fear too.
It is a bit sticky at the end. I was not able to get rid off stickiness as I was cleaning it. It is closing with a click. Otherwise it is moving freely.
Is it possible to dismantle the EGR motor to check the gearing?
I wish I have some broken EGR to play with.

Here is a little video from what it is does on idle when it is closing:
+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.

Quote:
Originally Posted by Zebster View Post
My apologies!

I'd guess that the EGR valve is sticking open

Last edited by Bican; Nov 2nd, 2021 at 15:35.
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