When starting my 2004 Ram first thing in the morning the check gauges light will come on (more times than not) and the oil pressure gauge reads zero. I turn it off and restart it and all is well then and for the rest of the day. Any ideas??
Thanks!

 

Try the "key dance" and see what codes come up. On-off-on-off-on. Be ready to write down the codes. For some reason, this doesn't work on some '04s, but it's worth a shot.

 

Several guys have had to replace the oil press sensor (located right above the oil filter) as it was bad