IH PARTS AMERICA
Click Here!

Go Back   IH PARTS AMERICA > Tech Forums > Oil Tech
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read Photo Gallery IH Store Home

Reply
 
Thread Tools Display Modes
Old 07-09-2016, 11:16 PM   #1
73 Cornbinder
Junior Member
 
Join Date: Jun 2016
Member Number: 8256
Posts: 5
Exclamation 73 Scout ii Oil Pressure Pegged at HIGH

73 Scout II with a 304 v8 automatic 4x4

I pulled the oil pan, changed the oil and filter, replaced the gasket and put everything back perfectly. Used 10w-40 with the proper amount per the manual. Everything prior to this was running well, just dripping oil from the pan.

Now my oil pressure is pegged at high. Dipstick shows proper levels of oil. Tried changing the filter to another new one (just in case) and it didn't work. The gauge is grounded properly. The sender was recently changed as well.

I read a few comments on other forums and it stated to drive it about 5 miles to get it warmed up so the oil will circulate and the pressure "should" go back to regular. It didn't. It didn't seem to be running hot after I got it back and checked on it but the dipstick was hotter than normal when checking the levels (which were still good)

thoughts???
73 Cornbinder is offline   Reply With Quote
Old 07-10-2016, 08:17 AM   #2
Scoutboy74
Moderator
 
Scoutboy74's Avatar
 
Join Date: Apr 2008
Member Number: 453
Location: Daze Crick, Jefferson
Posts: 4,055
Default Re: 73 Scout ii Oil Pressure Pegged at HIGH

First thought is, don't panic just yet. I wouldn't trust the stock gauges, especially in a new to you vehicle that you are still working bugs out of. The stockers don't tell you much even when they are working properly. How are the temp and fuel gauges behaving?
Next thought is, get an aftermarket "wet" op gauge hooked up. Something with some numbers on the face. Be really careful with the vinyl tubing for the sender. It is very delicate and easily kinked and melted. Copper tubing is much preferred for a permanent installation. Post back when you have some op number readings.
__________________
Favorite hobby...Driving Salma Hayek in my Scout

Coal Trickle - '99 Dodge Ram 2500 Q-Cab SWB 4x4 - 5.9L 24V CTD/NV4500
Hooty - '74 SII - 392/TF727/D20/3.73 D44's/Spartan FA/Krac-lok RA/RC 4" SUA/34x10.5 TSLs/33g Fuel/HFT 8k winch
Lemuel - '72 1210 Std Cab 4x4 CS - 304/TF727/RA D60 4.10 - "Pull Lemuel, pull!"
Mongo - '71 1210 Std Cab 2WD - 345/TF727/RA17 D60 4.10 Trac-lok - "Mongo love candy! Duh, huh, huh!"
Scoutboy74 is offline   Reply With Quote
Old 07-11-2016, 05:01 PM   #3
73 Cornbinder
Junior Member
 
Join Date: Jun 2016
Member Number: 8256
Posts: 5
Default Re: 73 Scout ii Oil Pressure Pegged at HIGH

Temp and fule gauges are reading perfectly. Going to try to redo the pcv valve, trying a new sender. Will try those and if I strike out, ill move on to an op gauge...most likely going to do the op gauge regardless.
Thanks for the recommendations.
73 Cornbinder is offline   Reply With Quote
Old 07-11-2016, 06:32 PM   #4
FDChappie
Senior Member
 
FDChappie's Avatar
 
Join Date: Aug 2011
Member Number: 3742
Location: Northern New California
Posts: 1,577
Default Re: 73 Scout ii Oil Pressure Pegged at HIGH

You could start by seeing what the gauge reads with the key in the accessory position. I had a bad sender once that would read 1/4 on the scale with the engine off.
__________________
1974 Scout II 345 T-19
1971 Travelette 392 T-36
1972 Loadstar 1700 dump truck 345 T-35
FDChappie is offline   Reply With Quote
Old 07-11-2016, 07:09 PM   #5
Scoutboy74
Moderator
 
Scoutboy74's Avatar
 
Join Date: Apr 2008
Member Number: 453
Location: Daze Crick, Jefferson
Posts: 4,055
Default Re: 73 Scout ii Oil Pressure Pegged at HIGH

Another thing to know about these engines is that they are not known for having high oil pressure. 60 psi on a cold engine is about the max and certainly not the norm. The IH lubrication system is more about volume and flow than pressure. A much more common issue is to see too little pressure. That condition is real cause for concern. So to see a stock op gauge pegging out the high side...yeah, I'm pretty dubious that it is a real representation of what's actually going on with your oil. Anything is possible, but that would be so rare that it almost isn't even worth considering.
__________________
Favorite hobby...Driving Salma Hayek in my Scout

Coal Trickle - '99 Dodge Ram 2500 Q-Cab SWB 4x4 - 5.9L 24V CTD/NV4500
Hooty - '74 SII - 392/TF727/D20/3.73 D44's/Spartan FA/Krac-lok RA/RC 4" SUA/34x10.5 TSLs/33g Fuel/HFT 8k winch
Lemuel - '72 1210 Std Cab 4x4 CS - 304/TF727/RA D60 4.10 - "Pull Lemuel, pull!"
Mongo - '71 1210 Std Cab 2WD - 345/TF727/RA17 D60 4.10 Trac-lok - "Mongo love candy! Duh, huh, huh!"
Scoutboy74 is offline   Reply With Quote
Old 07-12-2016, 08:26 AM   #6
Greg R
Senior Member
 
Join Date: Jul 2008
Member Number: 527
Location: Lebanon, OR
Posts: 775
Default Re: 73 Scout ii Oil Pressure Pegged at HIGH

Quote:
The gauge is grounded properly. The sender was recently changed as well.
Could you explain grounding the gauge? Would you know the ohm range of the "new" sender. It looks like some minor electrical deal is going on.
Greg R is offline   Reply With Quote
Reply

Tags
oil pressure

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 02:02 PM.