Oil pressure never went over 40, it had a sticky lifter, gauge went up to 65, next morning started truck and it goes to 80, no more sticky lifter noise. Gauge stays at 80 when running and goes to 0 when turned off.
The oil pressure gage starts bouncing around allot.
SOURCE: My 2003 GMC Sierra Z71
the oil pressure is always high when you start it,the oil is cold and creates a different reading.
a few things...to consider
oil pressure sender defective
too much oil
wrong oil type
SOURCE: oil pressure gauge at 0
It is a possibility but I would check for sure. The oil gauge on that unit is electric not mechanical, you need to remove the sender or find a oil hole port on the side of the block and test the oil pressure to be sure it has oil pressure, if it is then it could be the sender or the wires going to the computer control. 2005 may be under warranty, however do not drive it till you know for sure. I don't remember if they still had the kill switch on that year or not, if the switch was reading zero the engine would not start so it could be something simple like a corded wire or as you said the sending unit. Hope this helps and if you need more help write back or do a chat or e-mail to get more help. You can look up the part at www.advanceauto.com and see what it looks like and get the price list for the thing and look to see if it has one two or three wires before you ever open the hood. if it's a three wire it has a kill switch if it's two it's not. if it's one it gets the signal from the computer and your problem may be the computer. However I don't know if it is still under warranty or not and weather you want to fix it or not. Let me know if you need more help. If you need the procedure for removal please respond to this post. Thanks for using fix-ya. I hope this helped.
SOURCE: oil pressure gauge goes to 80 psi when the truck key is turned on
chances are your sending unit is not bad. These dashes have had alot of problems with stepper motors failing in the instrument cluster. does it go to zero when key is off? is it erratic? changes where it sits when running and when off? These are all problems within the cluster itself. It is not cheap to take this to the dealer. THey will want to replace the cluster. these clusters can be repaired for half the cost if you know where to go. Not sure yet what the rules are on here but i can repair these for about 325 verses over 600 from dealer and then reproggramming costs! One other note. Chevy has a recall on these! call you local dealer and ask what the criteria is for the recall. You may be able to get it repaired for free if you meet the time frame and mileage requirements.
SOURCE: 99 jeep grand cherokee oil pressure gauge drop
check oil pressure connector for damage,corrotion,oil, clean connection. make sure good ground, 5 volts suplyy and oil pressure sensor signal volts returt to computer. connector have 3 wires
SOURCE: if my oil sending unit is out will my truck break down
yes,it reads oil pressure only,if its out as long as it was working fine before it went bye bye your fine,you won't blow up engine or break down.
Fig. Oil level sensor location on 2002-2005 4.8L, 5.3L, 6.0L
Hope this helps.
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