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Get the suspension springs checked. Park the vehicle on a flat, level surface with no-one in it. Stand back and carefully look at the vehicle. Sometimes when a spring fails the vehicle will lean towards the broken side. The tail ends of the spring can break off when they are old and the broken bits don't always fall out when it happens.
The stall could be something separate. Do you have any warning lights on the dash? If the charcoal canister is starting to fail it often causes the check engine light to turn on as it will affect the emissions. This will trigger other engine sensors to flag up a trouble code.
Many 1995 Buick Regals have the newer OBDII (On Board Diagnostic version 2) computer. To obtain fault "codes" saved by it, it requires connection to an OBDII scanner. If you have the older pre-OBDII (let's call it OBDI) you don't need a scanner. Read on..
Beginning in 1994, vehicles were transitioning from the older OBDI computer and by a 1996 - nearly all were OBDII. The nice thing about OBDI, was that with a simple paper clip, you could get the OBDI computer to display the code as flashes of the Check Engine light on the dash. No special scanner required. This was more of a benefit in the early years of OBDII - now you can drive to any Autozone (and many other auto parts store) and they will scan the OBDII computer for you at no cost. They can also tell you what the "code" actually means so that you will know why the indicator is on - and just maybe - even how to fix it, too.
If you've been told you have / you're sure you've got an OBDI computer, here's what to do: find the terminal jack - usually under the dash - below the steering wheel. The pinouts for 1995 GMC's are below. You're going to be connecting terminal "B" to "A" (the top RIGHT most two terminals). Check the video on the other side of this picture for full details.
Here's a Youtube video that shows how it's done on a Saturn. It's the same for your Buick Regal - with an OBDI terminal. It will NOT work for an OBDII terminal.
You can only read, get and erase OBDII fault code with a code scan tools. OBDII code scanner is using to read and erase fault code for cars. Some scanners also have some other additional features
OBDII is strictly for engine management. The ABS uses it's own computer. You will need a higher end multi-function scan tool or an ABS specific scan tool to pull ABS codes and /or data.
Generally, if you leave the battery unplugged for an extended amount of time (2 days should do the trick), the computer will reset itself and any OBDII codes that have been tripped will be reset. If it is just OBDII codes that you are looking to clear, you can head to any Auto Parts Store and you should be able to buy a scanner to insert in the OBDII port in your car. From there, you should be able to clear any active codes for the time being.
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