[T3] Re/ Mystery Fix...

[Bobsnotch at aol.com]

In a message dated 1/27/2013 11:46:02 A.M. Eastern Standard Time,  
j_jonik at yahoo.com writes:
 
After doing that fuel system wire (#19) grounding on the  manifold, to run 
pump longer, the car made a couple mile round trip for  plumbing stuff, then 
the next day (temps still in the 20s), it started easily  and ran, sitting 
there, for a good ten minutes.
But an hour later,  getting set to go out, it ran for about 3 minutes 
(warming it up a little)  then cut out again.  Started it again...it ran for a 
minute.  After  that, just the one or two seconds.
So...as per Bob's note below, it  looks like the pump is "getting tired".  
So, I'll soak a couple of  dry-stored spares in diesel an get to the job of 
HOPING one of them  works.
But, before doing that, is there any way to assure that it's  a pump 
problem?...not one of the switches or something? (I have a bunch of  relay 
switches.)   Clean filter was put in just a month or two  ago.
If I did that wire grounding trick a few times, would that FIX  the 
problem, or just delay the inevitable?
A pump change job, on the  street, without a good jack even, is not fun...
 
 
You might try putting a volt meter or a small light bulb (with alligator  
clips) on the output of the relay that's running the pump. This would  tell 
you IF the voltage is dropping out, and stopping the pump, or voltage is  
stable, and the pump is just stopping. While the stock relays are virtually  
bullet proof, they can fail. This would also tell you IF it's a relay problem, 
 or the pump getting ready to die.
 
Grounding out the #19 wire is really just delaying the inevitable,  and 
eventually even it won't work. But you really need to find out IF it's the  
relay, or the pump. I only say that, because it's easier to change either item  
at home, rather than along side a road, or in a parking lot. Neither of 
those  is fun. Also, by grounding the #19 wire, you are bypassing the relay (at 
least  I believe that's what happens). One of the FI guru's will have to 
verify  that.   

Bob 65  Notch S w/Sunroof and IRS aka Krusty
64 T-34 Ghia aka Wolfie
71  Square-vert under  construction


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