If you aren't interested in purchasing a car diagnostic tool, you might be able to rent or borrow one.
Ọ bụrụ na ịnweghị mmasị n'ịzụta ngwá ọrụ nchọpụta ụgbọ ala, ị nwere ike ọbụna ịgbazite ma ọ bụ gbazite otu.