Fuel Pump Failure? Anyone have these same symptoms? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-25-2004, 11:25 PM   #11
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I just replaced the fuel pump in our '87 vandura, and I mean hours ago. The pump died a slow death, almost like the impeller or diaphram wore out. It would keep fuel pressure at idle, but the motor would stall any higher than that. The pump we pulled out was able to put fuel 3ft in the air, the new pump can do over 13ft, and the spare pump I have from the 94 can do higher than that. It'* the same style pump, So I imagine ours can do these things too. Just a thought there guys.
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Old 08-26-2004, 12:00 AM   #12
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Say, Damemorder, that just further confirms my experience, and Ranger'* too, of sometimes having these pumps "fade away" instead of immediately dying.

MAN, I LOVE your test comparison method !! That is WAY COOL

Sheesh, I can just see it now: I'm standing out in front of my garage, testing my pumps, with the rooster tails aimed over my neighbor'* fence just hoping that she is not smoking another cigarette (sorry Linda, -you'd have to know our neighbor,,,) -maybe I'll have to show her this thread

(--,,,and then again,,,, maybe not)
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Old 08-26-2004, 09:41 AM   #13
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I worked for Walbro in fuel systems. The enemy of your pump is rust, water
and contaminants.
Do you every use additives to keep your fuel system clean? (injector cleaner, mystery oil, Isopropal gas dryer)?
I use marvel mystery oil every 6 months and gas dryer in winter.
Both pumps are original and work like a champ.
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Old 08-26-2004, 01:09 PM   #14
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Quote:
Originally Posted by 57chevythunder
(I think if I had a MAP failing, it should set a code, -maybe not? -anyway it didn't.)
when i was driving the car that it died on, the first day of it acting like that, there was no light. the second day, on the way to work, i went to turn off the traction control, and for some reason, the second I did that, the ses light came on and the car wouldn't give me back traction control. very strange, but for whatever reason, it didn't set a code when it first started acting funny.

good luck taking care of the problem, whichever issue it might end up being!

matt
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