02-15-2012, 03:05 PM
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#10 (permalink)
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Enthusiast Member
Join Date: Jan 2012
Location: TN
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Quote:
Originally Posted by ZMan8
This car needs an oil pressure gauge IMO. Especially, people who put oil coolers on their cars need it. I'm still wondering about if you replace the oil pressure on-off sending unit with an aftermarket unit, will that allow the ecu to read oil pressure measurements-thereby allowing you to read them using an obdII reader.
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Unlikely. Most sending units are 0-5V sensors and the PCM has to know how to interpret that data and convert it to psi or whatever.
An idiot light switch just usually just goes to ground when pressure is out of the set range setting off the light.
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