i have two questions.

1.i have an issue with the reverse gear of the 90 honda. when i try reversing it does not engage and makes some wierd noise instead. after a couple of attempts it engages but the other gears are fine. i recently changed the fluid but that did not make a difference. the mileage now is about 170,000 .

2. the other issue is the check engine light on the computer is blinking from two sides. one is the regular one to retrive the check engine codes while the other one is to the right of it with a bigger diameter