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Old 24-06-17, 10:15 PM   #1
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Default New EGR but still problems.

Hello, recently i have replaced my EGR because of few fault codes. But with the new EGR i got
P0490 - EGR stuck, during programming

Car drives very bad, when i unplug the connector its fine.

Do the egr have to be programmed or is there any learning procedure neccessary?
My Car is:
Peugeot 307
2004
80kw
1.6hdi
dv6ted4

Thanks for any help

Last edited by steve277; 24-06-17 at 11:53 PM.
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Old 25-06-17, 09:41 PM   #2
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I've found that a replacement rarely fixes the problem on the 1.6 HDI. I've been told that it's due to the after market replacement part that just doesn't work.

Blank it off with a blanking plate and leave the plug connected as you'll get lots of random faults with it disconnected.
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Old 26-06-17, 09:10 PM   #3
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Will there be fault codes with blanking plate?
What about the exhaust gas test?
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Old 26-06-17, 09:12 PM   #4
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Aftermarket ones rarely work properly as stated above if your old valve is electrically ok i would do as suggested and blank it.

As for the gas test it will probably be cleaner without it
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Old 27-06-17, 10:31 PM   #5
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Yes its an electric egr valve.
So there will be no fault codes with egr blanking plate?
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Old 27-06-17, 11:52 PM   #6
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You might get a code saying that air flow not as expected [not sure of the exact wording] as the blocking of the egr forces more air through the normal air intake, but the ecu seems to learn and soon the fault no longer displays. I got this when blanking the egr in one of my 407's but now no longer appears after clearing it a few times. It didnt appear in my other 407 and none of my 406's had this fault.
I make it standard practice to blank off the egr... your intake system will thank you for it.. no mor severely blocked and oiled up intake runners. All my cars run better with it blocked, more mpg and better power, but i did remove the intake manifold off all of them and cleaned out all the gunge. One of my 407's had the intake runners blocked by an estimated 40?%. It was a different car when i took it for a drive after doing the job.
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Old 28-06-17, 01:18 PM   #7
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Not wanting to be a kill joy but all that muck is now going out the exhaust and into the atmosphere which the system was designed to stop!!
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Old 28-06-17, 04:26 PM   #8
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You're right but it not worth to spend 500usd for buy psa egr and let it fix in garage, its more than the car is worth.

If i drive 6 litre car it blows more nox in air than my car with working egr, where's the matter.

But i get your point.
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Old 28-06-17, 04:40 PM   #9
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Quote:
Originally Posted by madbadandold View Post
Not wanting to be a kill joy but all that muck is now going out the exhaust and into the atmosphere which the system was designed to stop!!
Not exactly as the muck as you call it only builds up on the intakes because it is recycled exhaust gases which has already been burnt so if it fills the intake with MUCK then the engine is no longer running at peak efficiency as the intake airflow is reduced and the result of that is more smoke as the engine is not getting the air it needs.

I would bet an engine run for 100k miles with an egr would make more smoke and harmful muck than 1 run with the egr blanked.

EGR valves are like compact discs we were told they were indestructable and would last 1000 years that was lies.

EGR valves CAN help reduce emissions but can also make things worse !!
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Old 28-06-17, 07:42 PM   #10
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What makes the system clog up is the lack of servicing that goes on with oil and filter changes not being done religiously.
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