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Guest Message by DevFuse

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Oil Pressure Control Valve

First on this?

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#1 Rich B.

Rich B.

    Not another year gone by?

  • Northeast Region
  • 3,648 posts
  • Region:U.S., Northeast
  • Current Vehicle:Boss 302 and '16 Buick LaCrosse
  • Boss 302's Year:2013

Posted 21 January 2018 - 05:12 PM

Was on the Buick Forum and a post came up saying a code showed for a faulty oil pressure control valve? Never heard of this, but it seems I would of known about by now. They do exist and are designed to reduce oil pressure if it builds too high. I don't believe our engines have them, have never seen anything here about such.

Know our oil filters have relief bypass built in and turbocharger wastegate valves to reduce boost, but this is what I get for Mustang- https://www.american...cleType=Mustang American Muscle has another damn redirect but can go directly from there, I didn't do it. http://www.vw-resour...ing_system.html Definition for VW but all must be similiar.

Found this bit, not our cars but perhaps ball park info, not to be confused with oil pressure sensor or sender: http://www.network54...re relief valve

Con't.- This is of interest with oil pump and mechanical pressure relief.
https://www.highpowe...-leave-it-alone So I suppose if it was never a problem why fix if not broken? Always thought they were a demand and supply type arrangement related to RPM.

WHAT ABOUT THIS? My thoughts are and yes we have pressure relief valve integral with pump or block installed. Really like the feed back on this one? So these reliefs have different requirements or specs for the oil weight recommended by Ford. In other words this should be a different setting or spring in a GT from a Boss, assembly line mixup wrong part install? It appears nobody else here has a clue on this either.

May be the root of the mystery why the engine ticks after oil change. The viscosity between new and existing heated oil would be different. To me the engine sounds like it's oil starved with ticking valve stems or lifters (if motor even has or similiar). Ford also recommends its oil thinner for ticking engines. Anybody ever done a computer relearn for that after oil change, probably no connection?

Again, my point being is that these valves or springs could easily of been installed backwards (duh, tapered coil spring) or swapped with those meant for a lesser or lower RPM engine. The tick after oil change happens with some motors- others not...... Hmm, Ford probably regulates oil pressure relief electronically these days lmao. Anything goes if they were putting in sound tube things, I can't tell any difference.

Con't. Again- I see no control valves in this article, in fact where oil pressure is req'd for cam phasing, I'd say the opposite holds true now. Totally clueless at this point? https://www.diyford....cation-systems/ And another article contradicting the last one. http://www.eng-tips.....cfm?qid=261445

Wish I never started this one. Some things are best left alone.

Edited by Rich B., 25 January 2018 - 10:27 AM.

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