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fuel pump problems for 2000 Chevy Astro Van


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sharon.72064
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Aug 23, 2012, 9:38 PM

Post #1 of 12 (3524 views)
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2000 Chevy Astro Van
4.3
190,000

While driving, the car stopped running. Fuel pump will not run. Replaced fuel pump relay & checked all fuses. Removed fuel pump & hooked up to 12V & it runs, but won't run while connected to vehicle. When key is cycled, there is no start up on fuel pump. Do you have any ideas?
Thank you,
Stan


(This post was edited by sharon.72064 on Aug 24, 2012, 11:47 AM)


Hammer Time
Ultimate Carjunky / Moderator


Aug 23, 2012, 9:53 PM

Post #2 of 12 (3507 views)
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Do you have power going to the pump on the gray wire during 2 second prime?




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



sharon.72064
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Aug 23, 2012, 10:54 PM

Post #3 of 12 (3489 views)
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I don't know, but will check that tomorrow morning. Thank you for your help and pls don't give up on me! I will let you know tomorrow AM


Tom Greenleaf
Ultimate Carjunky / Moderator


Aug 24, 2012, 4:07 AM

Post #4 of 12 (3468 views)
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Just a maybe is plug for wiring right at/near tank is corroded some and not letting current thru properly,

T
_________________________________________
Long retired now


sharon.72064
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Aug 24, 2012, 11:42 AM

Post #5 of 12 (3447 views)
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OK, the grey wire at the fuel pump stays on for 3 sec. when tested. The grey wire to the fuel pump also stays on 3 sec. when tested. Upon taking it into shop and hooking up to a 12V, it did NOT start. (a week or so ago, it did briefly start for a quick second, but not today.) Guess we can safely say it's the fuel pump??? This is original fuel pump with 190,000 miles. We will replace fuel pump & let you know if it works! Thank you so much for your valuable help. Couldn't have done it without you.
StanSly


Hammer Time
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Aug 24, 2012, 11:59 AM

Post #6 of 12 (3436 views)
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What you have verified is everything up to the tank connector for power, not ground. You can have a connector problem, a ground problem or a bad pump. Verify that power supply again, this time using the black ground wire at the pump connector as your ground for the test light.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



sharon.72064
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Aug 24, 2012, 12:02 PM

Post #7 of 12 (3430 views)
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ok, will do. thanx again


sharon.72064
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Aug 24, 2012, 12:19 PM

Post #8 of 12 (3420 views)
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OK, I exposed the BL wire & used as ground wire for test light. The GR wire came on for 3 sec. & went off when key was cycled. Bad Fuel Pump???
Thanks again


Hammer Time
Ultimate Carjunky / Moderator


Aug 24, 2012, 12:36 PM

Post #9 of 12 (3411 views)
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Assuming it's not a connector beyond that point, yes.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



sharon.72064
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Aug 24, 2012, 12:47 PM

Post #10 of 12 (3407 views)
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There are no other connectors since I went to the wiring leading down to fuel pump motor itself using the BL wire ground & using test lite. Thank you so much for your quick responses. I posted your forum on my Facebook page and told people to check it out (hope that was okey). We will now buy a fuel pump. Checking on prices (so far $300 -$400). FYI I watched a video on utube where they suggested cutting a hole in floor board to access the fuel pump. I did this since it was under back seat. It was so simple to get out, after removing back seat & carpet.
Again I really appreciate you. You have a wonderfully helpful site.


sharon.72064
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Aug 24, 2012, 8:55 PM

Post #11 of 12 (3397 views)
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Just returned from Little Rock from buying a fuel pump (only $259.00). Put it in and it started like a charm. Wanted to thank you so much, I could'nt have done it without your advice.
Stan LaughLaughLaugh


Hammer Time
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Aug 24, 2012, 9:00 PM

Post #12 of 12 (3390 views)
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Glad to hear it worked out for you. Feel free to promote us anywhere you want. We are just a small group of professional and retired techs that donate out time here.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.





fuel pump problems for 2000 Chevy Astro Van


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