98 xc with 165k. Pulling codes 300, 302, 305. Any thoughts on the most likely causes? Just had it in two weeks ago for vacuum leak and they fixed a hose and thought that had solved the problem. They did say there could be other vacuum leaks that they couldn't detect until after the obvious leak was fixed. Had the comp reset and after 100 miles the light stillhasn't come back on.

Thnx

 

Are those p codes?
Like P0300?

 

Yeah, sorry, should of said that. P0305, P0300, P0302.

 

They are all misfire codes but none specify cylinders.
When was the last full tune up?

The spark plugs wires have dates stamped on them to help tell how old they are.

 

P0302 says misfire has occurred in cylinder number 2. P0305 says misfire has occurred in cylinder number 5. P0300 says that multiple random misfires have occurred.

Don't know when last time spark plug, wires, coil were changed. I'll look at the wires stamp like you suggested. Any other possible and usual causes?

 

Usually only the ignition parts set the misfire codes. Unless an injector is bad which is rare.

 

Thanks. That would be good, better than some of the other possibilities.I'll let you knowthe final outcome.