Johnny Ray

Just bought a 1988 coupe,got a good deal $4200 has 130,000 mi. To make a long story short almost a $1000 later in basic repairs now coolant fan quits.Checked everything two relay's have the same 2 dead wires all the way to a 3rd fuel pump relay at firewall,i'm stumped. Should I bypass relay & use a toggle switch?

mazdaverx7

Why not diagnose the issue properly and fix the car properly? Seems that you have an issues that should be addressed sooner rather than later. We're here for advice and tech support and can help you though any issue you may have.

ghoastrider1

check out the coolant sensor as well.. and the wire.

shootnstarz

Congrats on the new acquisition !!

I agree that you should take the time to find the issue and repair it correctly, much easier said than done.

Rick

1993C4LT1

You've only spent 1,000? Lucky you.

playsdixie

1st, get a gm manual....you'll be needing it
you can ground the black/green wire to the fan to see if it works...if you have a fan in front of the a/c condenser, you can do the same...if they work, then you'll need a coolant sensor or a relay. You can ground the coolant sensor to see if the fan turns on. Should also come on with the a/c.....

DGXR

Could you? Yes.
Should you? That's your decision.
Before you install a toggle switch, be sure the fans are working in the first place. By my experience it is rare that they do fail, but it happens.

3JsVette

with mazdaverx7