I would suspect the sensor itself first, before the thermostat, check its connection its a single green wire at the front of the engine, accessed from the drivers side, it plugs onto the sensor using a spade connection, it can come loose, corroded or the sensor itself can fail/intermittent.

Thank ...

Hi - my temperature gauge started moving more than usual yesterday. Thankfully it wasn't moving beyond the 11:00 position but did seem to indicate that the engine was fluctuating between a cool and normal operating temperature. I think this might mean my thermostat is faulty. I wonder if anyone can ...

Thank you all for your replies. Really impressed with this forum!

I'll let you know how I get on...

The rear section of my exhaust fell of my 1999 Mazda Bongo (2.5 TD) this afternoon. :( The pipe to the rear box has broken where it joins the box. Normally I'd just order another and arrange a fitting.
I have taken off the box which is still in reasonable shape and have the rubber fittings. It just ...

Hi and welcome.

Mine fell off on the M5 a couple of years ago.

No probs returning home, no fumes in vehicle and very little noise (almost no increase).

I'm pretty sure you'll be ok to drive home.

Edit: you might do ok posting this in 'Techi' as more peeps will see it. :wink:

Thank you for the ...

The rear section of my exhaust fell of my 1999 Mazda Bongo (2.5 TD) this afternoon. :( The pipe to the rear box has broken where it joins the box. Normally I'd just order another and arrange a fitting.
I have taken off the box which is still in reasonable shape and have the rubber fittings. It just ...