[alfa] oil light on...a bit long

[Jon Pike <jhpike@xxxxxxx>]

Jack said:

> Does the oil pressure warning light come on 
> with just the ignition on? It's worrysome that the light stays on after 
> startup. One of those gauges is lying . . . and my guess it's the gauge 
> sending unit.  The sending unit for the oil pressure warning light is on the 
> left side of the engine, just aft of the oil filter.
I'd get or borrow a known quality mechanical gauge and see just what's 
happening.  If the warning light is correct,  you're extremely low in 
pressure..  
I was trying to figure out what these sensors actually indicate or 
should indicate,  since that would be a troubleshooting help..  only 
found a figure for the Bosch warning light sensor.  The sensor had this 
number on it: 03441010414 (Bosch number)  I found the part on some Bosch 
website that I can't even find now..  and wrote down "0.15 - 0.45 bar" 
(which translates to about 2.2 -6.5 psi) though I don't remember if 
that's a range that the switch could close at,  or more likely,  the 
range it stay's closed over. 
I do remember reading a few places that the indicator light comes on 
when the oil pressure goes below 7 psi or so,  so this tracks with the 
high end of that range.  Anyway, if you're really going that low often,  
you have a dangerous problem..

Get the pressure checked,  and then start checking your gauge wiring 
connections.  (or, hopefully not,  get the crank plugs put back in or 
the oil pump pressure regulator unstuck)

Jon
77 Spider
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