elbekko Posted March 30, 2022 Share Posted March 30, 2022 Another year, another second hand EAS drive block that bites the dust. Again the right rear that refused to come up. Why always that one? And not just on my car either, @Escape is having similar symptoms, also the right rear. Quote Link to comment Share on other sites More sharing options...
Arjan Posted March 31, 2022 Share Posted March 31, 2022 Parked in a certain way outside ? Quote Link to comment Share on other sites More sharing options...
elbekko Posted March 31, 2022 Author Share Posted March 31, 2022 No, that shouldn't be affecting it. It's just the drive blocks that always seem to fail in the same way. It's very strange. Quote Link to comment Share on other sites More sharing options...
Snagger Posted March 31, 2022 Share Posted March 31, 2022 Condensation in the valve block draining towards one solenoid and corroding it or the casing? Quote Link to comment Share on other sites More sharing options...
elbekko Posted March 31, 2022 Author Share Posted March 31, 2022 Well, the solenoid appears to be fine. It's purely the electronic drive block that converts the ECU's solid signal into PWM for the valves that fails. I do wonder if the valve may be slightly sticking and pulling some extra current. So far both times it has happened shortly after towing a heavy load, so maybe when it has to keep the valve open longer than normal the drive pack burns out? Still very strange... Quote Link to comment Share on other sites More sharing options...
Snagger Posted March 31, 2022 Share Posted March 31, 2022 A dry solder joint resulting in overheating of the electronic opponents on that channel, then? Or again, some moisture getting in and corroding, shorting or increasing resistance of components in that area of the box? Quote Link to comment Share on other sites More sharing options...
elbekko Posted March 31, 2022 Author Share Posted March 31, 2022 Hmm, maybe. I could try taking a look at the valve itself at some point. The connector to the valves is squeaky clean, and the drive block itself is fully potted, so shouldn't be seeing any moisture. So the only thing it could be is at the valve itself. If it is due to moisture/heat affecting mainly that valve, that could explain why it happens on other vehicles too. Quote Link to comment Share on other sites More sharing options...
elbekko Posted September 18, 2022 Author Share Posted September 18, 2022 Finally got around to it. That'll do it. Turns out the right rear is right above this hole: Which goes into the wheel well. Normally there is the inner liner to give a bit of protection, but I don't have that one anymore, so it's a straight throw from the tyre to the valve... But even cars with inner wheel wells get junk in there, like on this valve block I took off the shelf: So I popped a grommet in the hole and poked a small hole for drainage. There's a bunch of slots and such in the side of the box that would let large amounts of water drain anyway. Mystery (and problem) solved 1 Quote Link to comment Share on other sites More sharing options...
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