I have a car about 11 years old with 107K miles. Since last winter, it would intermittently and briefly make grinding noise on cold start ups. It does not happen on all cold start ups, and when it happens, it would last few seconds, and stop, and maybe few seconds later come back again for few seconds. Noise it not consistent at all so it’s very difficult to duplicate the problem when taking it to a mechanic, and mechanics will say unless the noise is consistent and they can duplicate the noise, it will be very difficult to isolate the problem or diagnose it. During warm weather such as now in May, it doesn’t happen. It only happens in cold weathers. I did go to two mechanics, and both worked on my car, and didn’t fix my problem so I payed two mechanics w/o getting my problem fixed.
What would be the best approach about how long to keep this car? It will need new tires, battery, bunch of other maintenance work, and w/in next 5 years it will likely need new clutch, and clutch along will be over $1000 in my area. Given car’s elusive problem which doesn’t yet seem to be affecting its driveability, should I keep putting money into it to maintain it, OR do nothing until a bigger problem happens, OR start working on getting rid of the car with least financial damage? Your opinions are appreciated.