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Old 10-08-2019, 09:46 AM   #20
MisterM52
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Join Date: Jul 2017
Location: Stuttgart, Germany
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Default FIXED!

Hi everyone, I have some fantastic news. All my issues have been fixed and the root was ASC & ABS. I did the ABS repair, and just went for a drive, no more misfires, no more hesitations! no more issues, didn't even need to disable the ASC. All is working great!

So I went after the ABS module today, took the electronic controller part off, cut the plastic housing open using a angle grinder (can use a dremel rotary tool) I found the dry solder joints. I re soldered it all then put the lid back on and plastic welded it (you can use the soldering iron plus some left over abs plastic to do such repairs) then cleaned it off with the grinder a bit and sealed it with some plastic epoxy just for good measure.


I also found a fuse (IIRC fuse 21 5A/32V I believe?) that was blown. Thanks to that fuse blowing I was able to narrow it more down to the ABS/ASC as I believe the solder joints after the speed bump were so lose that it was intermittent when the engine was pulling hard the ABS must had enough of a kickback/jerk to loosen the solder joints inside, then same applied going uphill and shorting that eventually lead blowing the fuse months later, which thankfully disabled the ASC and the car was able to just drive fine.

But now all is running fine, the ABS & ASC works fine and the lights have gone. The down side was when putting it all back together one of the ABS lines are now cross threaded which I will have to repair! Haha! I could had done the repair without taking the abs lines off (a little bending will be required). Something I will attempt to solve tomorrow or this week when time allows but for now I am so happy that my little Red Ti is working fine. Now I can leave this here in NZ as my holiday car!

Anybody having misfire issues, kindly check the code and for any codes, then this code I had 121 Height Adaptation Load Management (which is not well documented online at all) this error code was all due to the ASC MK20 ABS module having bad solder joints inside that made things intermittent!
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Last edited by MisterM52; 10-08-2019 at 09:58 AM.
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