A co-worker of mine has a 91 accord se that has a flashing oil light problem. It does not come on every time he drives it and sometimes it will go days without coming on at all. He changed the oil and filter, tested verified oil pressure, and installed a new integrated control unit and none have fixed the problem. If any of you have any clues, we would greatly appreciate the help.

 

Oil pressure sending unit, maybe?

 

We already installed a new one and still it flashes.

 

Then it sounds like the wiring is shorting to ground somewhere. That's all the pressure switch does, is close the circuit to ground.

 

I'll pass on the suggestion to him and see if he has checked the wiring yet. Thanks for the help!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaRue &raquo;</TD></TR><TR><TD CLASS="quote">We already installed a new one and still it flashes.</TD></TR></TABLE>

Try hooking up a manual oil pressure guage. That is the best way to see what you are actually getting for oil pressure. It MAY be something as easy as a wire problem ... but you will not really know unless you check the pressure out. How many miles on the engine?