Wierd oil pressure
#1
Registered User
Thread Starter
Wierd oil pressure
So, i just went up to my grandparents, Whe i pulled into my apartment i stopped at the entrance to grab the mail, when i got back in i noticed the oil pressure was at the first mark, right up from low. I got the truck when it was still cold here, but now we are at 97 degrees, 103 for next weekend. When it was cold she would idle about 750-800rpm's, and still does when the a/c is off. Once the a/c is on she idles at about 500 rpm's. Isnt there a valve on the throttle linkage that adjusts the idle according to a/c on or off? Its kinda worrying me. Also, according to maintenance records it has always had 10W-30 and a filter change between 2600 and 2800 miles. Also, while driving, if i am cruising between 1500 and 2200rpm's it sits about halfway on the gauge, when accelerating it goes to about 3/4 on the gauge and drops to half when i shift. Any ideas?
#2
Registered User
Join Date: Mar 2009
Location: Tennessee
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Those are very normal oil pressure readings for the 3.0. If you take it on a longer drive in warm weather, the reading will go gradually down to the 1/4 mark and stay there. Search this forum and you'll find good discussions on this, as all of us seem to get the same readings.
I'm not sure about the A/C idle issue. I don't recall my idle dropping off much.
I'm not sure about the A/C idle issue. I don't recall my idle dropping off much.
#4
Registered User
My 3.0 shows around 3/4 on the gauge when cold & about 1/4 when hot at an idle. While driving at 2500 rpm's it's usually 1/2.
This is on a perfect running engine with 150,xxx miles on it.
It seems normal to me.
This is on a perfect running engine with 150,xxx miles on it.
It seems normal to me.
#5
Registered User
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 8,254
Likes: 0
Received 822 Likes
on
649 Posts
While there are plenty of things that can go wrong with that setup, one easy-to-check possibility is that gunk in the plenum has stopped up the port on the plenum. If you pull the line from the plenum, there should be vacuum (and idle-up). If not, the port may be plugged.
#6
Registered User
iTrader: (1)
mine actually dits lower than the first mark when idling...
i did a search a while ago because i was concerned, but it seems that there are a LOT of other people with this "problem"... turns out its pretty common, so i just chalk it up to another one of the 3.0's hyjinks...
i did a search a while ago because i was concerned, but it seems that there are a LOT of other people with this "problem"... turns out its pretty common, so i just chalk it up to another one of the 3.0's hyjinks...
#7
Contributing Member
Join Date: Apr 2006
Location: TENN Native Languishing in Virginia
Posts: 4,787
Likes: 0
Received 34 Likes
on
14 Posts
The idle up valve for the A/C is located on the fender on the pax side of the engine. It is a black plastic hex-head bolt with a flathead screwdriver slot. Adjust it to idle up to @1000 rpm when the A/C kicks on.
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
Odin
86-95 Trucks & 4Runners
8
07-15-2015 09:28 PM
88yodabasket
86-95 Trucks & 4Runners
15
07-13-2015 01:32 PM