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Author Topic: Me7.5 O2 circuit Fried... trying to fix  (Read 1470 times)
Jim_Coupe
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« on: January 08, 2017, 11:20:25 AM »

Hi,

I opened my ECU (me7.5) and discovered that pin51 was coocked inside ecu.. Pin 51 is Front O2 sensor... I have now repaired the broken copper lane but still have problems.. Any ideas on IC´s or other stuff that i shall check that could be broken in the circuit for o2 sensor. ?
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E85oholic
adam-
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« Reply #1 on: January 08, 2017, 02:18:37 PM »

It's not worth repairing.
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Jim_Coupe
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« Reply #2 on: January 09, 2017, 07:01:49 AM »

Hehe true...I tried to refit some ic's but naaah.. These narrowband me7.5 ecus are cheap. Already have 2 new ecus on the way. But the question is whay coocked the ecus. Hmmm..
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jogtx16v
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« Reply #3 on: January 09, 2017, 08:29:27 AM »

common cause is shorted wiring in o2 sensor wiring.
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Zenerdiode
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« Reply #4 on: January 09, 2017, 01:44:55 PM »

But the question is whay coocked the ecus. Hmmm..

By far the biggest reason is the heater element in the O2 sensor fails short-circuit. This was a massive oversight on manufacturer; not to run the heater supply through a fuse.
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Jim_Coupe
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« Reply #5 on: January 10, 2017, 04:31:41 AM »

Ok i just had that thought why didnt they fuse the damn wire.. I think ill solder a fuse on that wire just in case and throw in a new O2 sensor and check the wiring. Dont want to fry more ECUs.
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KasperH
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« Reply #6 on: September 10, 2017, 04:45:16 PM »

Hi, I was along on saturday but Im keen to get more involved in the club with training and rides etc.

What kind of stuff do you guys to at circuit training and what kits needed?

WTF Is this person on about? Is it a bot?
He/it has been blurting out random incoherent questions all week?

Or is it just an extreme case of lost in translation?
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