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post #9 of (permalink) Old 15-04-2017, 14:22
IanMc
Stuck in the 80's...
 
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Join Date: Jun 2009
Location: Braintree, Essex
Car: Flame Red '95 MGF, 17 Mini Cooper S, 13 VX Astra, 15 VX Corsa & 59 Fiesta.
Posts: 4,594
Quote:
Originally Posted by MGNeuro View Post
We've check all of the obvious things (Dad's a mechanic so not entirely without knowledge ), but can't seem to get to the bottom of anything. We're not sure why the o2 sensor is inactive, given we've changed it to a new one, and the temperature on the lambda seems to change. That said, we've tested it hot and the voltage isn't changing at all, even if the sensor itself feels as if it's working.
First rule (as I am sure your Dad will tell you), dont trust anything, even brand new parts...

I've had brand new Bosch and NGK spark plugs straight out of the box not working before. And of course you wouldn't call them cheap pattern parts.

On the subject of spark plugs, what condition and colour are yours? Are they wet with fuel by any chance?

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