You do not need any scan tool as pre-OBD-II models has a self diagnostic system that allows you to retrieve the trouble codes with the aid of a jumper wire. Click the first link to get an idea how to retrieve the trouble codes.
You should get the trouble code to understand the problem first before attempting to replace anything.
Speculating and guessing does not work as it is like looking for a needle in a haystack.
It could be anything from low engine compression to a bad sensor.
Sunday, July 24th, 2011 AT 7:50 PM