94 BVille starts fine than dies (FIXED) - Page 3 - 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 07-09-2007, 01:11 PM   #21
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Find the fuel pump prime lead. It'* an empty green connector located above the battery. Get a piece of 8 gauge wire, put a 20 amp (I think that size) fuse on it and connect the battery positive to the lead. That should make the fuel pump try to run continuosly without the car running.
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Old 07-09-2007, 02:07 PM   #22
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Sorry to interject here... why are you pulling a fuel tank w/o knowing the fuel pressure?

If your pressure is bad..you get to repeat it again.
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Old 07-09-2007, 03:08 PM   #23
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Quote:
Originally Posted by BillBoost37
Sorry to interject here... why are you pulling a fuel tank w/o knowing the fuel pressure?

If your pressure is bad..you get to repeat it again.
First because a mechanic replaced the pump over a year ago with one from Kragens.
(I am not a fan of Master fuel pumps, and it has always bugged me that someone else worked on my car)

also the pressure/volume was poor. I dont need a gauge to see fuel only trickle from the schrader valve.

A Taxi cost me $40 to get the pump and it would have been the same if I went and bought a fuel pressure gauge. $40 Taxi + $40 Gauge. I havent needed a fuel pressure gauge in 47 Years so I felt no real need to get one now. I would rather take a chance and get a better pump.

So I knew from the beginning that I wanted a new Delco pump and screen.(no matter what)

When I removed the sending unit I noticed the pump wasent connected correctly to the tube (poor mount or installation) that would let the pressure leak out.

I installed the new pump and it fits very nice on the tube and now I have piece of mind as well.

I will install the tank tomorrow and see if it runs.

Has anyone here ever needed to replace the fuel pump relay?
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Old 07-09-2007, 03:29 PM   #24
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Sorry...I missed the low volume low pressure post. and agree on your approach once you knew it was an issue.

Holler if we can help further.

On the FP relay. It'* a relay..so it can go bad, however your small amount of fuel would make one thnk it'* working. You could pull it, test it for continutiy in the energized state.

I have seen the contacts in some relays get carboned and while the relay engergizes..it can be making poor or no contact if the build up is too great. Although I haven't seen that in normal automotive relays to date.
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Old 07-09-2007, 03:35 PM   #25
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No prob at all. I really want to say thanks for all the advise i have received here, it has reminded me why I became a mechanic in the first place.

Bonneville Club ROCKS!
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Old 07-09-2007, 04:33 PM   #26
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Hey Bill... What relay could he swap as a test?

And BTW Mark.... After all of the issues I have seen with the Autozone and Advance Pumps, AC Delco was the only way for me to go... And here it is well over 1 year later the Pump is functioning great....

My Original Pump was still functioning and at times within Spec... Once it got warm the Pressure would Sink like a Rock.... I was easily able to drop to 32 Psi when the lowest spec'd for me was 48.... Its not to friendly running low on pressure at 6000 Rpms... <---- This is when I figured I had a fuel related issue and started checking... I would get 45psi with no Vac, and 38-40 with Vac applied... I was able to run on that for a while.. Noticed the car getting sicker, and knock counts went through the roof... Checked the pressure again and found the 32psi..... I dropped the tank and installed the new AC Delco... Been good ever since

Let us know how you make out

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Old 07-09-2007, 05:38 PM   #27
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Heck..I wouldn't swap. I'd run power and ground to test for it reacting and then test for continuity
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Old 07-10-2007, 10:03 PM   #28
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FIXED! I almost forgot how excited I get after I fix stuff.

before when I turned the key to on I could here the pump go on to pressurize so I could hear it run.

when i depressed the schraeder valve there was very little pressure or volume for that matter. But for me to get to the store to buy a fuel pump gauge it was almost as much to get the pump (Taxi Ride).

So I FINALLY got up the nerve to remove the tank and noticed the pump wasent seated well on the tube I was hopeful that was the problem (technically the fuel was just leaking back into the tank and wasent able to pressurize the line correctly.

So swap the pump for a new Delco, install a new sock and filter, replace the tank and VOILA!

BigRed is alive again.

Thanks to everyone here that took the time to read the thread and offer advise.
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Old 07-10-2007, 10:13 PM   #29
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Great news!
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