Many thanks for your reply....I appreciate this problem is a bit like the needle in a haystack...so here goes.
The car was purchased new by my Father in 1995 from a Renault Dealer. I took ownership in 1998 and the car was serviced every 6,000 miles up to 60,000 miles. There is now 120,656 miles on the clock. The battery is in good condition, and is only 3 years old.
The problem first started 4 weeks ago, up to that point all was fine. I had driven her about 5 miles to do some shopping and she wouldn’t start when I went to return home. The started motor was turning the engine over bit the engine wouldn’t fire. Tried to start her for a couple of minutes and she wouldn’t start; called the RAC for help. While waiting for the RAC, after about 10 minutes I tried to start her again, and she fired first time with only a couple of turns of the engine. When the RAC man arrived, about 10 minutes after that, the engine started first time, when he tried it. He followed me home, just in case, and when I got home he asked he to turn off the engine and start it again. The engine started first time. Because the engine was running there was nothing he could do. However, he suggested a good place to start would be to have the TDC sensor replaced. Booked the car into a local garage, not a Renault garage, and they replaced the sensor. They suggested that a scan of the engine management system would be a good idea to see if there were ant faults showing in the history. They had the car for two days and ran a scan and there was no faults fond in the history, and the engine was starting and running fine. Used the car Saturday before last and the engine started fine, however, while driving the engine cut out a couple of times, but started after a couple of attempts. Having done some shopping, the engine started first time and drove home with no problem. However, since then the engine has not started and I am not sure if keeping trying to start the engine may be doing damage to the engine.
Over to you.