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After much head scratching and trial and error my air con and Temp Gauge now works The problems are in my previous thread it had seemed to go away but then stopped working again http://www.406oc.co.uk/viewtopic.php?f=1&t=7230 The fault was caused by the engine to car wiring loom connectors. These ar...

My Parants 306 had problems starting and that was the fuel lift pump
I assume you listen for it when you turn the ignition on (with the backseats lifted)

Also i think the oil pressure sensor is screwed into the block under the fuel filter. You
can just see it throgh a small gap

Roger

The temp sensor I am talking about is the water temp which is used for the temp gauge on the dash and ECU

Its on the side of the thermostat housing above the gearbox. Removing the airfilter helps to see it

A green sensor with two wires

Roger

Worth checking your temp gauge is working, the aircon uses this to decide to engage,

If not then temp sender is faulty or plugs under drivers carpet maybe corroded

Rog

Sensor is about a tenner, just below termostat housing and green connector, just a small circlip holds it in.
I changed mine as the gauge stopped working but didn't
seem to help problem. Driving in downpour seem to fix problem !

See my post HDI Temp gauge

Roger

Temp gauge now started working after a drive in very wet conditions yesterday morning, don't understand but air conditioning has also now started working. I think there must be a connection with the sensor and the A/C control unit. If anyone has any thoughts I would be interested to hear. I didn't t...

Changed temp sender still no luck,

Does anyone know if the temp gauge actually runs from ECU as there is only one sender ?

Can I reset faults on system without a diagnostic device or main dealer, i.e by disconnecting battery ?

Thanks for that, I'll give up looking for a second sensor and
replace the one I've found which sounds like the one you replaced.
Useful tip about the wife !

Roger

Hi, I've got a problem with the Temp gauge on the dash, it looks like it may be the temp sender but I am confused about its location. the Haynes manual says its got a single blue wire into it, The only bits I can find is a sensor on the end of the engine above the gear box near the thermostat housin...