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 Oil pump change possible when doing timing belt?
#1059039
04/18/13 03:09 PM
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Joined: Mar 2004
Posts: 152
OP
Wheeler
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Hi All,
I can't find a definite answer on this, and it's been awhile since I last replaced the timing belt.
Is the oil pump accessible/possible to change without removing the oil pan, raising the engine, etc. (3.0 engine)
At 250K original miles, my oil pressure is getting lower by the minute, and am hoping I can do something about it without a major repair.
Thanks
1992 montero, cranked t-bars, OME springs, 1-1/2" spring spacers, Homemade rear bumper and roof rack, 33" BFG AT, 1" body lift, Superwinch hubs, '95 SR locking rear axle, was AT - now V5MT1-3 5spd.
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Re: Oil pump change possible when doing timing belt?
[Re: Mike_Pirie]
#1059040
04/19/13 03:05 AM
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Joined: Jun 2003
Posts: 7,356
Trail Leader
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Not sure on the 12V SOHC, but the 24V needs the oil pan dropped.
Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand! Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top Her Truck: 03, 3.8, 20th Anniv, 65k Daughter's: 06 Eclipse, Keeping it Mitsu! FSMs: MitsubishiLinks.com
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Re: Oil pump change possible when doing timing belt?
[Re: Mike_Pirie]
#1059041
04/19/13 04:55 AM
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Joined: Mar 2003
Posts: 2,324
Body Damage is Cool
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Nope, to unbolt the pickup tube you have to drop the pan. to drop the pan you have to raise the engine and rotate front diff. <img src="/forums/images/graemlins/scared.gif" alt="" />
dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.
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Re: Oil pump change possible when doing timing belt?
[Re: Mike_Pirie]
#1059042
04/19/13 05:54 AM
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Joined: Sep 2011
Posts: 628
Rock Warrior
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Are you sure that the oil pump is the reason for the pressure drop? There are a lot of reasons for pressure drop such as worn bearings etc.
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Re: Oil pump change possible when doing timing belt?
[Re: geocrasher]
#1059043
04/19/13 01:30 PM
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Joined: Mar 2004
Posts: 152
OP
Wheeler
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Thanks guys.
The low presure is probably from a combination of things. On cold start-up, the pressure gets up to 70psi, but when warm the pressure is 30 at 3000rpm, and 20 at idle.
Looks like an overhaul is in the cards in the next year or two...
1992 montero, cranked t-bars, OME springs, 1-1/2" spring spacers, Homemade rear bumper and roof rack, 33" BFG AT, 1" body lift, Superwinch hubs, '95 SR locking rear axle, was AT - now V5MT1-3 5spd.
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Re: Oil pump change possible when doing timing belt?
[Re: Mike_Pirie]
#1059044
04/21/13 03:30 AM
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Joined: Mar 2003
Posts: 2,324
Body Damage is Cool
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what kinda gauge are you using? A 3.0 warm only runs about 10 lbs. at idle, around 700 rpm. I run 80 lbs at cold start/idle,,,like 1,400 rpm. Running around town - 40-60 lbs. I have a very accurate autometer mechanical gauge. I added an idiot light with a 20 lb switch. I get the red light when I sit at a red light. I'm not worried. The electric gauge on your dash is very slow to respond and is not very accurate. ( just noticed,,,V5MT1-3 coversion,,, <img src="/forums/images/graemlins/kewl.gif" alt="" />)
Last edited by KrzyDav; 04/21/13 03:32 AM.
dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.
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Re: Oil pump change possible when doing timing belt?
[Re: Mike_Pirie]
#1059045
04/21/13 12:24 PM
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Joined: Mar 2005
Posts: 1,006
Body Damage is Cool
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On cold start-up, the pressure gets up to 70psi, but when warm the pressure is 30 at 3000rpm, and 20 at idle.
The pressure looks pretty much OK. The 70 psi cold looks high depending on ambient/oil grade, the hot 30 at 3K is about where mine runs and the 20 at idle looks high, mine runs about 10 psi. Maybe you want to attach an alternate gauge to see what it shows. What grade oil you running?
92 Montero LS 3.0L V6 Auto, Stock, Original owner, 185,800K miles
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Re: Oil pump change possible when doing timing belt?
[Re: pcc]
#1059046
04/22/13 12:05 AM
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Joined: Mar 2004
Posts: 152
OP
Wheeler
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Just put in a cheapo mech gave from autozone, because my dummy light was blinking sometimes at idle. So maybe I'm ok. I'll look for a better gage. And yes, I love the 5-speed.
1992 montero, cranked t-bars, OME springs, 1-1/2" spring spacers, Homemade rear bumper and roof rack, 33" BFG AT, 1" body lift, Superwinch hubs, '95 SR locking rear axle, was AT - now V5MT1-3 5spd.
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