PinotNoir

Sorry didn't catch your reg number as we passed on the Banbury Road this afternoon, but thanks for the wave.

A dark red/burgundy and a blue striped pair heading in convoy away from Yarnton. Hope you managed to keep clear of the later storms. 

Exiting Woodstock, then heading through Bladon at about 07:15.

Only spotted the rear end as it was parked up as we blatted past at lunchtime today.  If my brief sighting served me right a giveaway registration indicated a CSR?  

Hi Jason

Whatever the outcome regarding your last point the speedo calibration is ultimately affected by the rolling circumference of the tyre. A speedo should be calibrated for specific wheel diameter, tyre tread width and tyre aspect ratio, therefore change to any of these specifications would impact upon speedo accuracy.
I could only find US sites to offer comparisons with a quick search, but these may prove to be of interest:

https://www.tacomaworld.com/tirecalc
https://tiresize.com/comparison/

Reading the symptoms again if it recovering then an open circuit cable is unlikely, but a poor connection possible or of course a failing sensor.  If a poor connection this could be exhibited during movement particularly if there is any tension on a cable through steering etc.

If it helps the pin on the Stack MIL connector was 'D'.  This runs to pin 8 on the grey engine plug.  The other side of that ran to the OP sensor (yellow/red cable at sensor end).  If you can get to the MIL plug you should be able to check of the circuit through for continuity to the OP sensor.  If it is open circuit or a noticeable resistance that would be a likely cause.  Checking the schematic drawing I have (and some differ) the sensor also has a common connection to ECU plug 2 pins 73, 66 and 59 plus another connection to ECU plug 1 pin 6.  Loss or poor connection through any of these could also causes issues. I forgot to draw the extra inline connector on my schematic so can't be 100% sure which cable it was, so it's probably worth a look (it is not far from the sensor).  

Fingers crossed... 

Hi Matthew

I had an oil pressure display of '999’.  Similar to your diagnosis the troubleshooting section in the manual identified that there could be “an open circuit connection” (for the sensor) or possibly a faulty sensor. I checked the connections on the sensor which were good.

The pin connection at the Stack end was identified and using a tester  to check the cable to the sensor terminal this was found to be open circuit.  Tracing the cable back from the sensor there was an inline connector which had pulled taught and simply needed reinserting.  

I reviewed several electrical schematic drawings all of which omitted the inline connections, so it might be a simple one to check for.    

It was a pleasure to have spotted you on your blat back - it provided me with a smile too.  I had time for a brief blat later, albeit in my more sedate 7.

Hope you both enjoy very many more miles of fun.

Two great looking recent cars, one orange and one yellow, looking like they were about to depart the town to make the most of the sunshine.

Stack replaced and resealed the glass in my ST display just before Christmas (as well as carrying out the recommended battery change).  Pete Allen was extremely helpful and offered a great turnaround at a very busy time.   (Thanks again Pete and Williams Automobiles). I don't know if they supply glass only, but I would certainly ask - the first thing they needed to know from me was the serial number from which they confirmed when they had supplied it to CC several years back.  

Paul