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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-18-2003, 12:01 AM   #11
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where is the regulator, how hard is it to replace and how much do they cost normally????????

tanks again
Ed
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Old 06-18-2003, 12:22 AM   #12
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so this car did sit fer 4 years before I got it but I changed all of the filters and gave it a tune up. the gas gage is digital but does stick now and then so ill drop the tank and have a look any ways.. while I am in there is there a way to test pump? jumper some power to it and see it it makes a weird noise? what have "your" bad pumps look or acted like?

ill grab my service manula and look up stuff on the regulator...


dont let the time it sat fool ya.. this car is like super duper clean.. can still read the stamping on the under body..
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Old 06-18-2003, 01:45 AM   #13
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So I read hrough my service manula in the fuel section and never saw any mention of a fuel regulator.. was this a pontiac thing maybe? As my 3.8 is in an olds.... 1990?... Well I have not read the emissions and driveabiltiysection.. anyone know wheere in the manula it would talk about a fuel regulator?
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Old 06-18-2003, 05:45 AM   #14
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my bonneville manual speaks of the regulator on page 6E3-C2-3
Drivability and Emissions- Fuel Injection (Port) - Fuel Control System

It also syas the regulator is exactly where Jr's3800 described, with two fuel lines and a vacuum line connecting to it, you should be able to follow the vacuum lines from the Throttle Body to find the regulator, The one on my car is gold, but i have seen them black on other Bonnevilles
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Old 06-20-2003, 12:14 AM   #15
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Regulater? $60 something, couldnt believe it myself. Sorry I cant help on testing reg. have never looked into it. Maybe you need to hook pressure gauge before the regulater ? - All Buick V6 engines were the same set up no matter what brand they were put in. I'd still change your filter because you may have picked up alot of junk from bottom of tank but your problem sounds the same as mine but Id make sure its not the reg. first - less labor. If your car is that clean dropping the tank might go OK. You'll need to remove the rear swaybar I bet. At least thats how the 86 Riviera was. Forget the MAF you have a fuel pressure problem. Good Luck !!!!!!

Edit : NAPA fuel pump - $90 something. My mechanic says hes used plenty of them and not had problems. GM dealer gave me a price of like 130 but that was 2 years ago for my 86 Riv. The $90 one I put in stopped working and I never got back at it so I dont know if its the pump or one of those Riv/Toro/Reatta electrical problems.
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