Replaced egr valve, ditributor assembly,cap,rotor wires and plugs.
2006-07-24 13:19:25 · 4 answers · asked by Randall J 1 in Cars & Transportation ➔ Maintenance & Repairs
on a vehicle this old the catalytic converter would be highly suspect, however there could also be dirty fuel injectors which leak excess fuel into the intake causing a "rich" condition, and there are other factors at play here. The bottom line is your hydrocarbons are high because of unburned fuel in the exhaust. this could be caused by a misfire. If you plug a scan tool into it and look at the o2 sensors, see if they are counting. Also make sure you don't have any exhaust leaks before the cat or the o2 sensors will report a "lean" condition to the computer which in turn will "richen-up" the mixture to compensate, causing the readings you are getting. You might consider having a professional tech look at it and pay his fee, than spend countless hours trying this and that till your sick of buying parts, could be cheaper in the long run. good luck!
2006-07-24 13:52:40 · answer #1 · answered by mark o 3 · 0⤊ 0⤋
Replace the catalytic converter
It has done it job for enough years,it's wore out!
2006-07-24 13:22:50 · answer #2 · answered by ? 6 · 0⤊ 0⤋
Try running higher octane gas when you go get your next check.
2006-07-24 13:35:04 · answer #3 · answered by Josh P 3 · 0⤊ 0⤋
check air filter too http://www.aircare.ca/index.php?repinfo-ere-causes-hc.php
2006-07-24 13:58:04 · answer #4 · answered by Anonymous · 0⤊ 0⤋