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the12volt's install bay
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howie ll
Joined: January 09, 2007
Location:
United Kingdom
Posts: 9,717 |
| Posted: January 29, 2012 at 12:39 AM - IP Logged |
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9-12volts? Peter, explain this one please.
Could it be the dreaded oil pressure switch scenario?
___________________________________
Amateurs assume, don't test and have problems; pros test first.
Read the installation manual, do a search here for your vehicle wiring. |
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oldspark
Joined: November 03, 2008
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Australia
Posts: 2,856 |
| Posted: January 30, 2012 at 1:35 AM - IP Logged |
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howie ll wrote:
| ... the dreaded oil pressure switch scenario? |
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You mean... no!!... not people that use oil-pressure to control f..ff.fff.fuelpumps?  
Thou art cruel!
But no, I'm merely responding. Earlier I was thinking some high-impedance voltage may be being measured (ie, the 9V) - not that charging system variation has been discounted - but I thought KIS. Or, not yet... at least.
And using a relay-coil's pull-in and drop-out behavior as a voltage window sensor has worked often for many. (IE - drop the voltage. A resistor may be ok, but diodes have a essentially a constant voltage drop that is more current independent.)
In some cases that easier than diatribe.
Besides, if the 9V output becomes a "normal" 0 (off or low or 0V), then just remove the add-ons above. |
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Topic: fuel pump relay?
