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Buick Regal Problems

I have a 91 buick regal for the last month or so while i am driving it , you can feel it in the gas pedal the car will buckle, or ****, not sure what to call it, had it at a mechanic this morning and of course since it doesn't always do it, it did not do it for him so he says he can't find anything, my son in law has replaced all the filters , spark plugs, the fuel ignition regulator, nothing seems to work, my daughter and grandson has been with me when this happens some timess just once a day other times 5 times a day help please

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Whenever a car starts missing, it's usually one of two things, Bad Fuel or an electrical/electronic problem. Did your son-in-law replace the spark plug wires as well? It sounds like he covered everything else. It could be that simple. I live in Washington State where we get a lot of moisture in our gas tanks. If you let your gas tank get too low before fueling up, sometimes the tanks condensate from all the moisture, and you end up getting water in your fuel tank which will drive you crazy when your car starts bucking or missing for no good reason. When I was doing a lot of commuting I'd add gas dryer to my fuel tank. Chevron makes a pretty good fuel additive which cleans up your injectors which can also mimic this problem. Hope it's something simple.

Posted on Oct 22, 2013

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Posted on Jan 02, 2017

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SOURCE: buick regal 92 3.8L Horrible fuel mileage

Sounds like you might have an oxygen sensor problem. Your catalytic converter(s) maybe defective or dirty. That in turn can dirty up the oxygen sensor. A defective oxygen sensor will send faulty info to the computer, interpreting the fumes as cold (even when the engine warms up). That causes the computer to adjust the fuel mixture to very rich, giving you poor gas mileage and the fuel smell. Hope it helps.

Posted on Mar 16, 2010

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