The car won't start after engine warms up. If you drive for about 15-20 mins and you switch it off, you would have to wait for about 30mins to 1 hour for the engine to cool down before it starts again. I'm short of funds and I don't want the mechanic to do their usual try and error stuffs cos I'm broke. One mechanic said there was a problem in my fuse relay box. Could it be true?