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Question egr valve location

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1 year 8 months ago #2518 by geary
geary created the topic: egr valve location
Hi Everyone,

Would anyone happen to know where the EGR valve is on a 2001 mazda bongo diesel please. I thought I had it but on closer inspection there appears to be 2 of them. So I am now wondering if I was in the right place at all.
I am looking for it as I have fault codes 0400 and 1228 displaying. Everything seems fine, speed and boost wise until the engine warms up. Then the actuator moves and the glow plug light comes on and the wastegate actuator does not move again, but I am pretty sure it is supposed to, to open or close the wastegate.

Any help would be much appreciated.

Many thanks

jono
The following user(s) said Thank You: Arthur

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1 year 8 months ago #2520 by geary
geary replied the topic: egr valve location
Hi everyone,

Many thanks for all the views. I gave up in the end and put it into the garage. Turns out there are 2 egr valves in the bongo. they could not fix it though but narrowed it down to the solenoids. Tested those and one is faulty.
Now on the search for a replacement valve.
thanks

jonathan

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1 year 7 months ago #2566 by geary
geary replied the topic: egr valve location
Hello again,

I'm back with the same ongoing issue. I got the solenoids working with a bit of contact cleaner and some grease. Thought that would be it sorted. However I still have the same fault codes coming up. I am now guessing it may be a sensor or something that should tell the solenoids to operate but isn't.
I'm a bit stuck now as I don't know where to find such sensors. strange thing is when I got the first solenoid working(which I thought was the only non working one), I took a return journey of 60 miles. the 30 miles going had the flashing light come up. But the return 30 mles, the light did not come on at all and the van ran great, had the boost and all.
thought my luck was in, but it has since come back on. seems to be the city driving.
any help would be fantastic, would love to get rid if the headache with all the guesswork.

many thanks

jono

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4 weeks 2 days ago #2887 by Friendee1999
Friendee1999 replied the topic: egr valve location
Hi, just wonder how you resolved this issue as I see no responses. I found 3 out of 4 solenoid defect (electrical impedance infinite) and still looking for the correct replacements as they are not all the same (normal open versus normal close) and the piping is also tricky, shouldn't be mixed up. Could do with some clear pictures of vacuum tubing to verify. Anyone please?

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