[s-cars] Ac question

[Joshua Van Tol]

A good way to check the operation of the circuit is to make a jumper wire to
connect the load terminals of the relay. Be SURE you've got the right
terminals, or you might damage whatever drives the relay. Having such a
jumper wire handy (in the glove box) can be very handy to get you out of a
failed fuel pump relay situation.

You can also remove the relay and apply 12v to the coil terminals and check
that it pulls in, and that the resistance between the contacts is
approximately 0 ohms.


On Tue, Aug 9, 2011 at 8:13 AM, LL - NY <larrycleung at gmail.com> wrote:

> I would check the relay itself.  Possibly open it up, get a good cleaner to
> clean the contacts, see if anything is gummed up. I had a fool pump relay
> intermittently fail on my 4000q which I couldn't figure out (it was my
> pre-list days).  Eventually I did have to replace the relay, but cleaning
> helped for a (short) period. Perhaps the same issue is occuring with the
> secondary fan relay, but since it's operation is even more periodic than a
> fool pump, it becames even harder to diagnose.
>
>