1994 Park Ave - rough idle
Hello everyone! I'm new here and just recently purchased my grandmother'* 1994 Park Avenue by Buick. It'* been a very comfortable ride, but this last week it'* been acting weird.
The idle is sometimes rough, and it seems a bit slow on the highway. When I say rough, the car has a bit of a growl to it and the car will sometimes shake. I'm thinking bad plugs/wires, but I'm not completely sure.
While driving on the highway last week the check engine light came on. It went off the next day, but I'm sure there'* a code stored somewhere. Is there an easy way to get the codes from a '94? I have the Alex Pepper scan tool, but I haven't had any luck connecting. I'm guessing 1994 is one of those odd years between the easy paperclip check of OBDI and the scan tool necessary OBDII. Any thoughts?
Thanks in advance for the help!