Wednesday 31 May 2017

Lambda Sensor (cont'd)

Phase 2 for the lambda sensor this morning.  But before fitting the old 'overnight washed' sensor, there was an additional job.  When I put this on my blog yesterday Richard, a regular reader correctly pointed out that the recommended position for the lambda sensor is facing upwards between 10° -75° from the vertical, not pointing sideways to slightly downwards, which is the usual position for the Superspec.   Another example of poor design.  Apparently it allows condensation to gather in the sensor and destroy it.  So off came the exhaust pipe again and the sensor re-positioned to the perfect position.  

It's all starting to look a bit scruffy, but luckily it will all be hidden when the heat shield goes back on. 

So in went the 'cleaned' sensor and I took her to the scrapyard to get some bits for my next project (This is a 'real' scrapyard where you take your own tools and they just tell you to search through the cars and take what you want off the car).    I wasn't totally surprised that the closed loop light stayed off all the way there and back and a look at the data shows why:
Obviously no good on the journey there, but after a 'hot soak' at the scrapyard it did at least make an attempt and towards the end of the journey I could convince myself that it was 'almost' working.   So I will leave it on until I get the new one.

As an aside, I had put the top cooling pipe back in and she behaved much better. 

Back to 15 minutes to reach working temperature.   Dropped while parked at the scrapyard, but at the 30 min point I was stopped quite a long time at the traffic lights in Grantham.   She climbed to 95C, fan kicked on for a couple of mins, brought her back down to 86C and she sat there all the way home, just climbing a bit as I drove through the village and home.  Still wondering if I should replace the fan thermostat with a slightly higher one, maybe 98C.

No comments:

Post a Comment