Towing a caravan With a Defender TD5 up a slight hill on the A55 way back home after a 200mile journey, had to drop down to 4th gear then 3rd gear which I thought was unusual, the temp gauge shot up to the red, I pulled over and checked the engine, it seamed ok no signs of overheating, plenty of water and plenty of oil. Started engine again within minutes and temp was back to normal. Carried on the journey, next long hill it did the same 4th, 3rd gear again i thought unusual temp gauge shot up to red changed to 4th temp gauge shot down to normal then up to red then to cold (no reading) it stayed like that until we stopped. We started again temp gauge was back to normal. Does any body have any ideas?
Last edited: