PeachParts Mercedes-Benz Forum - View Single Post

meltedpanda · #8 11-28-2017, 04:00 PM

OK this one is getting more frustrating Today , early morning , cold out, had not driven it in several days
Turned the key and acted like the starter would not engage, or no spark , or something not right --sounded very strange, after several rounds of this whirring noise then it started . Runs fine , no CEL, although I had it checked to make sure no codes were present , there were none. The rest of the day it started up with out issued, EXCEPT after a 12 mile run I put key in turned over once then nothing , turned key off back on and started . I replaced the relay that is known to cause issues , without help ( it did it one more time after that)

Now Im thinking CPS , but will those symptoms occur ( no start, trouble start) when cold?
I don't THINK it is the starter because when it does start , 98% of the time it is a perfect starting sequence. Turn key - start car....

I do know one of my catalytic converters is failing ( rumbling) but I doubt that is related . no power issues , no mpg issues

Thoughts ?