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#1
05-13-2006, 07:36 PM
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expert opinions needed
I believe I know the answers I will get but just wanted to hear then anyway,
98 astro, bought it with a suposed dead fuel pump, started w/starting fluid. got it home and no sound from the tank, checked and there was power to the pump, pulled the filter, clogged very bad, pulled the tank/pump, put power to the pump nothing, smacked the pump (not too hard) pump jumps to life. now the question, should I trust the pump? if we were talking about a $50.00or even a $100.00 part there would be no question, but as most know these damn things run to the tune of around $400.00. I would like to test it in liquid for a couple of hours but I dont want to submerge it in water and ruin it if it is good, and there is no way im gonna run it in a bucket of fuel, "I do not wish to blow up my home or die", If anyone knows of a way to test with a meter im all ears and would be greatfull, I ran it dry for 1 min 30 sec the motor started getting warm and I heard a slight variation in the motor hum, but I dont think this is a very good test since everyone knows these things need liquid to run through them for cooling. I figure the clogged fuel filter and it being run low on gas stopped the pump but I dont get why it would start again with a smack and seem to run so smooth after it was I guess siezed, bad spot in the armature? I pulsed power to it a good hundred times to get it to stop in the "bad spot" again so I could see it was bad but it jumps to life every time I put power to it. anybody with knowledge on these things? I'd be greatfull. 
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#2
05-13-2006, 09:42 PM
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Re: expert opinions needed
I wouldn't trust it. Get a new one.
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CD 1991 W41 #142 1989 Caprice 9C1 1997 C1500 1997 Bonnie SE 1998 Olds 98 LS Recently updated: http://forums.b-body.org
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#3
05-14-2006, 03:25 PM
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Re: expert opinions needed
I wouldn't trust it to start again with even a hammer blow.
You can get the pump separate from the sending unit, if you shop around a bit. A replacement pump is only about $100, versus the $400 for the whole in-tank unit. However, if you DO replace only the pump, check all four of the connectors very closely for signs of resistive heating. I believe the EP381 is the correct pump, but make certain before ordering one.
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