'89 Wrangler 2.5L - High idle after warm - Help?
Thanks in advance to anyone with advice. My brother has an '89 2.5L with about 150k miles. When starting cold, engine runs rough at around 700 rpm, but as it warms up, it smooths out, but is running 1500 rpm.
He's also seen an increase in fuel consumption from ~20 mpg to 15 mpg. The plugs are new and properly gapped, but he still needs to replace the distributer cap and ignition wires.
Anyone have anything else he should be checking? He lives in Hawaii and parts are very expensive - so just swapping out parts is not a cheap thing to do. Also, the dealer won't work on his vehicle any more as they say it's too old.
Thanks for your help.