ok my speedo will work for like 8 miles after i reset my comp..and then it will go up and down but never stay on the speed im goin...if i push on the cluster it will stay on the speed and i let my finger off it goes to zero..andi made sure the screws where tight to the cluster..

2nd i have a code 21 for the o2 sensor reading lean..how do i fix this buy another o2 sensor?

 

Does the cluster use a ribbon cable ??? mine was acting strange I took it out tightened the screws and used a pencil eraser on the cable connectors then reassembled ... Just like new