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high oil pressure

 
mgbasehit
I love my Chevy Chevette!
Posts: 1
Joined: 12/11
Posted: 12/26/11 01:32 PM

oil pressure in my 05' vette just pegged to eighty psi on the instrument gauge, doesn't run any different, didn't modify anything, any explanation out there?  

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waynep7122
I mow my lawn and find Chevys
Posts: 1114
Joined: 08/09
Posted: 12/26/11 03:23 PM

does the Gauge PEG after you turn the Key on.. but before you start the engine??? or ONLY after you start the engine...

the is the OIL pressure switch for your 2005 corvette..



change it.. verify the wiring to it is NOT damaged...

Thread Size: M16 X 1.50    this is a GASKET seal STRAIGHT thread.. NOT tapered pipe as is used on other oil pressure switches..

LS OIL Pressuresenderwiring

LS OIL Pressure Sender


be sure that if you try to find an oil pressure test gauge.. that you verify that you have the correct threaded adaptor.. the harbor freight versions don't have this 16 MM threaded adaptor..

there is a possibility that the in the oil pump bypass valve is sticking..

item 414 and 415  these are DEEP inside the engine behind the timing cover..  

040427GM00 022

there is also an OIL filter bypass valve..

item 436


there is also an OIL cooler bypass valve ... shown as #4 on this picture.. open in a new window to view the right side..

0605221Y01 040

before you do anything.. check the TSB Titles over at alldatadiy.com  

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waynep7122
I mow my lawn and find Chevys
Posts: 1114
Joined: 08/09
Posted: 12/26/11 03:47 PM

when i glanced at the TSBs i did not see any that might be an oil pressure issue.. but i might have missed it..

http://alldatadiy.com/TSB/10/051006fZ.html

read thru carefully...



~~~~~~~~~~~~~~~~~~~~~

these is at least one article i just saw in one of the magazines on replacing the LS crank driven oil pump

http://www.gmhightechperformance.com/tech/lsx_engine/0608gmhtp_ls7_camshaft_power_package_install/photo_39.html  

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waynep7122
I mow my lawn and find Chevys
Posts: 1114
Joined: 08/09
Posted: 12/26/11 04:22 PM

oh...  speedway makes an adaptor for the LS motor oil pressure switch..

2268 - LS SERIES OIL PRESSURE SENDER ADAPTER Price: $10.99 EA
Item #: 1822268
Item Details: 16mm-1.5 Male to 1/8" Female


but.. but.. only ONE wire is used for the oil pressure switch.. the other two are probably for the fuel pump ...

http://www.speedwaymotors.com/LS-Series-Oil-Pressure-Sender-Adapter,20928.html

GM has an oil pressure tester.. that replaces the OIL filter..  to test the system fast and easy...


LS Engine OIL Pressure Test  

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briando
I love my Chevy Chevette!
Posts: 10
Joined: 01/12
Posted: 07/26/12 03:02 PM

what happens if the oil pressure makes my http://www.mccarthychevrolet.com/new-inventory/pop a seal before i can fix it, what then?  

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