new problem check engine light appeared consulted obd II came back with code P1281 anyone have an idea on this? when I purchased the truck the dealer stated it could be because when he filled it up with gas he left the truck running???

 

this is on a 93???93 is not obd2 compliant,and does not set evap codes or "P codes

 

nope this is a 2001 same as previous post...I found the issue though thanks anyways...

 

so what was it engine cold to long, so probably thermostat[&:]