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#1
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Weird C280 A/C Problem - Long Read
OK - Here's the background:
Here's what was done for the repair:
The Problem: The AC Now works randomly. When it does work it cools FREEKING COLD - so it's working normally, pressures look good on the gauges etc. When it decides not to come on the climate control unit shows that it has 0 bars of pressure. But the gauges show otherwise. You can tell it's a false reasing because it will flicker between having pressure and not having pressure. When it decides to run the condensor fans also operate normally. (Has a new condensor fan also). It also gives a code about the cluster. What we've tried:
Still doing it - only thing we haven't tried is another cluster - but I'm at a loss about how the cluster could cause the problem - it works fine. And it wasn't causing any ac probs before the wreck. We're stumped |
#2
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It seems you've covered just about everything. I'm by no means an expert on MB climate control, so someone else will have to answer with regards to instrument cluster involvement. What I would do at this point is go back to every connection in the wiring harness and make sure that each connection is tight an making good contact. Also, give the wiring a good wiggle and tug test. I've found wires broken inside undamaged insulation. Problems like these can be some of the hardest to track down.
__________________
1989 300 SEL that mostly works, but needs TLC |
#3
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Quote:
The car got a whole new wire harness about a year ago. We ran all new wire from the pressure sensor directly to the climate control box and it still does it. We also spent an entire week to a end to end continuity tests on all the climate control wire harness - and nothing |
#4
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Quote:
__________________
1989 300 SEL that mostly works, but needs TLC |
#5
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Quote:
Yeah, hence the error about the cluster - hopefully someone knows what the cluster has to do with the climate control |
#6
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anyone?
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#7
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bump
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Bookmarks |
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