Quote:
Originally Posted by jmroy6
Just seems weird that it would read low at idle but function fine on cold startups 90+ psi. A replacement sensor is on its way, hopefully it does the trick. The sensor reads 150psi BTW and its tied into the stock sending unit location. Where is your AEM located? Is it manual or electronic?
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It makes sense that the pressure is higher at cold startups because the oil is thicker and takes more pressure to move it around the engine. As the oil warms up, the viscosity changes (gets thinner) and the pressure drops accordingly.
I don't see a mention of the oil you are using, nor the viscosity (10W-30) for example. Maybe your oil is old and just needs to be changed?
Keep us posted to see if the new sending unit changes anything...