I need help please. i have an integra 1990. The power go off for like 1 second and restart my radio most of the time when i put from gear to neutral. Please help and thanks for your time.
You have a connection problem, why it happens when shifting from a gear to neutral I am not sure of, is the car a standard or automatic?
If you loose all power then I would guess it is a main power or main ground connection, however that problem would normally show up when stating the car also.
The eliminate the main power and grounds as the problem, redo them all.
Start with the main grounds, batt. neg.(-) post, [and cable clamp] batt. to chassis ground, [under batt.] and chassis to engine ground, [at transaxle] this is all one cable.
All the above connections should be removed, both contact surfaces cleaned, then reconnected making sure the connection is tight.
The power connections would be the batt. pos.(+) post, [and cable clamp] batt. to engine bay fuse box, alt. charge line at both the alt. and engine bay fuse box, main fuses in engine bay fuse box.
Just like the ground connections the power connections need to be disconnected, cleaned and reconnected.
Can you confirm that you are loosing all power, do the park/head lights go out for that 1 sec. also, how about dome light, blower motor, any/all dash lights, instrument cluster and so on.
A loss of all power indicates a main power or ground connection problem, a loss of some powers indicates other then a main power or ground connection problem, maybe just a harness plug or a defective fuse, [not a blown fuse, a defective fuse] or a poor fuse connection. 94