SPONSORED LINKS

Oil pressure Drop

Tiny
AUDREYS
  • MEMBER
  • 1995 TOYOTA 4RUNNER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 190,000 MILES
I have a 95 4runner. The oil pressure gets very low when truck gets warm Heard some valve rattle too but went away when I put it in overdrive. I checked the oil after it cooled and it was fine. Any ideas?
Wednesday, January 26th, 2011 AT 3:26 PM

5 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Check the oil pressure with a mechanical gauge first, if low then possible oil pump. But could also be main bearing wear.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Wednesday, January 26th, 2011 AT 3:37 PM
Tiny
AUDREYS
  • MEMBER
  • 3 POSTS
Im assuming this is a garage needed type thing being I have no knowledge.
Was this
answer
helpful?
Yes
No
Wednesday, January 26th, 2011 AT 3:45 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Modern cars use an electrical oil pressure sender, these can go bad. A mechanical gauge screws into the electrical sender hole, rotate engine and you will get an actual OP reading.

Yes a garage will have to do this, my concern is that you are hearing rattling, a sign of low pressure.

Toyota uses a oil pump that has a bypass spring, these can go bad causing low or little oil pressure.
Was this
answer
helpful?
Yes
No
+4
Wednesday, January 26th, 2011 AT 3:49 PM
Tiny
AUDREYS
  • MEMBER
  • 3 POSTS
Thanks for the information.
Was this
answer
helpful?
Yes
No
Wednesday, January 26th, 2011 AT 3:52 PM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Thanks for using 2carpros.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, January 26th, 2011 AT 6:12 PM

Please login or register to post a reply.

Related Oil Low Pressure Content

Oil Pressure Low
GUIDE
Oil Pressure Low
Engine oil is used to cool and lubricate bearing and machined surfaces. Without oil pressure an engine will experience extreme internal engine damage due to heat caused by...
VIEW MORE

Sponsored links