Question about 1993 Buick Century

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I have a 1993 buick century custom. im currently getting 198miles to the tank. at normal idle the car sounds like its being choked of air and trying to stay alive. always starts right up, never stalled and isnt leaking anything,

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Recommend you pull the vacuum hose off the fuel pressure regulator at the end of the fuel rail and check for gas in the line. You can plug the hose with a golf tee and start the car, then see if any gas comes out of the vacuum port of the regulator. This would indicate the regulator diaphram has failed and is causing the engine to run rich. Replace the regulator if it leaks gas out the vacuum port. The regulator looks like the below picture.
I have a 1993 buick century custom. im currently - jturcotte.jpg

Posted on Nov 03, 2010

Testimonial: "Thanks I will try that!"

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1 Answer

The engine occasionally "chucks' and


clean the throttle plate & the idle air control valve,, be careful not to damage the mass air flow. choke and carb cleaner works fine.

Apr 19, 2011 | 1986 Buick Century

1 Answer

Does a 1993 Buick Century have a access panel for the fuel pump?


Unfortunately no , if you mean can you get to it with out dropping the tank.. The good thing is these tanks are very easy to remove,you can disconnect the rear exhaust hanger to swing the exhaust out of the way remove the gas filler hoses then the tank straps. Its a much easier job if you can get someone to help

Oct 25, 2010 | 1993 Buick Century

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1989 buick century custom problems


sounds like a dirty idle speed control valve.

To correct this problem I want you to get a can of intake cleaner (ABOUT $5.00) from any local auto parts store like NAPA or Carquest, do not use carburetor spray, intake cleaner only or u will damage the Teflon coating inside the throttle valve and air bypass valve, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

May 19, 2010 | 1989 Buick Century

1 Answer

When weather hot engine light comes on and engine idles high ,starts to overheat on 1992 Buick Century


High idle is computer controlled to try to get fan moving enough air to cool it down (so that part is normal) check that electric fan comes on and check clutch on mechanical fan if you have one. If all OK, radiator may be partially internally plugged or may have leaves stuck between it and a/c condenser.

Apr 24, 2009 | 1992 Buick Century

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