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Old 25 Jun 2007, 07:59 pm
Graham W
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Default Re: Is this a fuel pump relay problem?



Gordon McGrew wrote:
> My 94 GS-R sat in the parking lot all day in the sun and it was about
> 90 in Chicago today. So the inside was pretty toasty when I got in.
> The engine fired right up and I shifted immediately into reverse.
> Before I could let out the clutch, it died suddenly. Cranked and
> cranked but wouldn't restart. Opened all the windows, sunroof,
> checked the fuses, took a call on my cell phone. Must have been
> opened up for 5 - 10 minutes when I tried it again. It cranked for
> about 5 seconds and suddenly started. Ran fine all the way home with
> the AC on.
>
> Does this sound like a fuel pump relay? (Also called "main" relay?) I
> am thinking the car started with residual pressure and died as soon as
> the pressure dropped. The relay started working after it cooled down
> a little, but it took 5 seconds to pressurize the system before the
> engine started. Has anyone else had this experience?
>
> If it is the relay, is it totally unreliable at this point or is it
> likely to keep working if it stays cool?


It still could play up at any time or temperature. Get it out and
inspect the circuit board connections with an eye-glass. It is
pretty obvious if the joint has failed as there will be a ring shaped
crack around the offending pin.

Resoldering it will give it a new lease of life.


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