Check this website for further info on ODB 1 codes and good luck!
http://myweb.accessus.net/~090/dtcobd1.html The Ranger is the expert on all things mechanical here....you can also run a search at the top of the forum with keywords to check prior posts. Try clearing the DTC's (diagnostic trouble codes) you pulled using the info furnished on the site above and check to see what returns. If any are current they could need attention. Also, a GM Service Manual set is a very good investment and others have related that early models' manuals are being discounted at Helm, Inc. Mine have repaid the investment over and over and over.
http://myweb.accessus.net/~090/dtcobd1.html The Ranger is the expert on all things mechanical here....you can also run a search at the top of the forum with keywords to check prior posts. Try clearing the DTC's (diagnostic trouble codes) you pulled using the info furnished on the site above and check to see what returns. If any are current they could need attention. Also, a GM Service Manual set is a very good investment and others have related that early models' manuals are being discounted at Helm, Inc. Mine have repaid the investment over and over and over.