Having problems with your 1990 Chevrolet C1500 ?
1990 Chev Pickup C1500 service engine light
\015 Service engine soon light comes on while driving down the road\015
When was the last time you replaced the O2 sensor. Most people negelect replacing it every 50K or sooner if it is all short hops.
Repair Help & Product Troubleshooting for 1990 Chevrolet C1500
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