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Replacing stock oil pressure guage/sender by Crash_out
Started on: 09-15-2021 11:44 AM
Replies: 4 (75 views)
Last post by: theogre on 09-16-2021 08:55 AM
Crash_out
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Report this Post09-15-2021 11:44 AM Click Here to See the Profile for Crash_outSend a Private Message to Crash_outEdit/Delete MessageReply w/QuoteDirect Link to This Post
I know the stock oil pressure sender includes a fuel pump circuit. I was wondering if I replace the stock guage with an aftermarket one, either mechanical or with its own sender, do I need to do anything with the fuel pump wire.

Also, seems like I heard somewhere the stock ECM monitors the oil pressure and won't allow the engine to run with too low pressure or no signal?

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fierosound
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Report this Post09-15-2021 02:08 PM Click Here to See the Profile for fierosoundClick Here to visit fierosound's HomePageClick Here to Email fierosoundSend a Private Message to fierosoundEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Crash_out:

Also, seems like I heard somewhere the stock ECM monitors the oil pressure and won't allow the engine to run with too low pressure or no signal?



Wrong. You could have no oil in engine (0 pressure) and ECM wouldn't care.

The oil pressure unit only sends signal to gauge and a switch in the unit is a "backup" in case the fuel pump relay fails.
In that case, cranking the engine pumps up the oil pressure enough to close the switch and run the fuel pump and engine.

If you use an oil pressure sending unit without the fuel pump switch circuit - no problem (unless you have bad fuel pump relay).




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[This message has been edited by fierosound (edited 09-15-2021).]

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Crash_out
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Report this Post09-15-2021 03:23 PM Click Here to See the Profile for Crash_outSend a Private Message to Crash_outEdit/Delete MessageReply w/QuoteDirect Link to This Post
Ok, thanks!
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snyderman
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Report this Post09-15-2021 10:05 PM Click Here to See the Profile for snydermanSend a Private Message to snydermanEdit/Delete MessageReply w/QuoteDirect Link to This Post
Interesting. Let us know which oil pressure setup you go with.
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theogre
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Report this Post09-16-2021 08:55 AM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
You can T both senders w/ standard pipe fittings. NPT ¼ or ⅛ for OE hole and sender.
Maybe too small size to see at big box stores...

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