Post by lth0ms0n on May 9, 2021 20:51:27 GMT
Hi all,
What do I do when OBD11 says this about my coolant pumps?
I'm investigating an issue with the heating in my GTD at the moment. Before someone comments saying that my Matrix is clogged, last week I ran 400 miles with Forté coolant flush and bio-degreaser before removing the matrix, flushing the system and testing it. There's nothing wrong with the matrix; there was no sand in the coolant system, the silica gel bag hadn't ruptured and although there was some sh*t came out of the matrix when I flushed it through, when I tested it by running hot water through it (first one way, then the other) the matrix warmed up evenly.
I also made sure to cool it down between tests, just to be certain it wasn't latent heat moving through the metal - it wasn't. The matrix isn't clogged.
I've been running the car with just water in it for now (this is temporary!!) because I'm not filling it with fresh coolant until I know it's fixed. I'm working on it daily and still flushing the remainder of the degreaser from it at the moment, which is taking a while to come through...
I'm having intermittent success with the heating - it's still cold on my side (driver's/RHS) but I am seeing it warm up, slowly. There are still air bubbles coming out of the expansion chamber each time I run it which makes me think there is still air locked in it somewhere (I actually think the self-bleeding mechanism in the cooling system is a lot to do with all of these reports of this problem) because it will be warm and then cold totally cyclically, without rhyme or reason. I am only now beginning to see it settle down almost a week since we last drained and flushed it out.
Anyway, my Dad is of the opinion that we need to investigate the coolant pumps now, to make sure the pressure inside the matrix is correct. I ran a live data check on that today and it was as pictured above - all coolant pumps "unavailable" offline.
This makes no sense to me, surely they would only be offline if the ignition was off? Furthermore, all 3 of them can't be faulty - extreme circumstances non-withstanding - but I also get no fault codes from the engine for them.
We are considering the impellers being the problem which means one or more of them may need replacing. Is there a way of running it, via OBD11 so we can check them individually without having to start the engine? I thought there might be a cycle or something you can configure it to run, like you can use it to run the calibration cycle for the heater distribution flaps, for example.
Does anyone have any ideas? I'm not averse to replacing the matrix if the need arises but I'm not prepared to do that unnecessarily. I want my car to remain in tip-top condition but I don't want to replace bits where there is genuinely no issue with them - and I believe that to be the case with the matrix.
Thanks!
Lewis
What do I do when OBD11 says this about my coolant pumps?
I'm investigating an issue with the heating in my GTD at the moment. Before someone comments saying that my Matrix is clogged, last week I ran 400 miles with Forté coolant flush and bio-degreaser before removing the matrix, flushing the system and testing it. There's nothing wrong with the matrix; there was no sand in the coolant system, the silica gel bag hadn't ruptured and although there was some sh*t came out of the matrix when I flushed it through, when I tested it by running hot water through it (first one way, then the other) the matrix warmed up evenly.
I also made sure to cool it down between tests, just to be certain it wasn't latent heat moving through the metal - it wasn't. The matrix isn't clogged.
I've been running the car with just water in it for now (this is temporary!!) because I'm not filling it with fresh coolant until I know it's fixed. I'm working on it daily and still flushing the remainder of the degreaser from it at the moment, which is taking a while to come through...
I'm having intermittent success with the heating - it's still cold on my side (driver's/RHS) but I am seeing it warm up, slowly. There are still air bubbles coming out of the expansion chamber each time I run it which makes me think there is still air locked in it somewhere (I actually think the self-bleeding mechanism in the cooling system is a lot to do with all of these reports of this problem) because it will be warm and then cold totally cyclically, without rhyme or reason. I am only now beginning to see it settle down almost a week since we last drained and flushed it out.
Anyway, my Dad is of the opinion that we need to investigate the coolant pumps now, to make sure the pressure inside the matrix is correct. I ran a live data check on that today and it was as pictured above - all coolant pumps "unavailable" offline.
This makes no sense to me, surely they would only be offline if the ignition was off? Furthermore, all 3 of them can't be faulty - extreme circumstances non-withstanding - but I also get no fault codes from the engine for them.
We are considering the impellers being the problem which means one or more of them may need replacing. Is there a way of running it, via OBD11 so we can check them individually without having to start the engine? I thought there might be a cycle or something you can configure it to run, like you can use it to run the calibration cycle for the heater distribution flaps, for example.
Does anyone have any ideas? I'm not averse to replacing the matrix if the need arises but I'm not prepared to do that unnecessarily. I want my car to remain in tip-top condition but I don't want to replace bits where there is genuinely no issue with them - and I believe that to be the case with the matrix.
Thanks!
Lewis
