5ktq CIS problems > 13.8v at battery, only 9v at pump...

[Brett Dikeman]

At 7:03 PM -0400 8/2/03, John Forbes wrote:

>Ok voltage problem. Put a meter on the battery with car running and
>I get about 13.8, not the best but not the end of the world, then
>decided to put a meter on the pump and only got 9.2v WHILE THE CAR
>IS RUNNING!
>
>Anybody have any idea what would cause a drop that bad in that circuit?

Fuel pump relay would be my first guess.  They're known to go bad all
the time, mostly from failed solder joints, I believe(they crack,
arc, build up resistance, and finally just stop working entirely).
You can pop them open pretty easily- have a peek in there, maybe
re-solder some of the key connections(just adding a little NON ACID
flux-core solder should be sufficient).

Be careful gerfingergrabbin if the car was just running- especially
during their final days, the FPRs can run very hot because of the
high resistance.

Let us know what you find!

B
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