About five weeks ago, it had rained in morning. When I sat in my opel astra 2000, upon starting all the lights came on but the car wont start. Not even a click.
Then later in the day about 7 hours later, I sat in the car,, turned on the key and the car started normal. About two weeks after, it did the same and I went to check the battery.We put the car to 2nd and a push made it start. It was down, so I bought a new one and replace it. A week later, it started normal, i drove and parked it and when starting again, lights come up fine but the car wont start although I had bought a new battery. In a 2nd gear and push, the car started again.
Then a week, it had rained with humid temperature, it happened again. 2nd gear and a push and the car started. I took to a shop to test the alternator/generator and the results indicated it was good.
Could it be the starter or electrical problem? Sometimes, when I start the car, the sound goes very very high and it then cools down itself. Is it normal?
Now what could be the problem? Any information will be highly appreciated.