Originally Posted by
orefin
Now we knock on relay in main box and it start or maybe just cool down. But maybe should be problem there. Now fan of cooler do not start when turn the key on, and car normly start. So the problem is in starting relay? Or any other suggestion?
NO. Not the "starting relay".
My best bet is:
The problem is on the Relay Control Board, in the engine control relay circuit. If there is no current supply from the engine control relay, the pulse module will not engage the starter.
Have the relay control board resoldered. NOT just the corner, but all of it.
There is a chance the engine control relay itself is bad, but it is more likely to be the solder connections on the board.