low oil pressure
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low oil pressure
I've got an '89 aerostar that seems to have some oil pressure issues. When first started and warming up the pressure gauge sits right in the middle of normal, after warmed up it sits at the N and even lower while idling. Is this most likely a worn oil pump? What weight of oil should I be running in an engine with 170k on it, switch to something heavier?
I'm going to pickup the Haynes manual for my aerostar in the morning (new owner), is it easy to replace a worn oil pump?
Kanute
I'm going to pickup the Haynes manual for my aerostar in the morning (new owner), is it easy to replace a worn oil pump?
Kanute
Posting Guru
Joined: Jul 2004
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From: Mitchell, SD
First of all, I would not trust the stock gauge. They tend to wear out over time. I would test the pressure, or have someone check the pressure for you.
If you do need to replace the oil pump, it is not too tuff. All you need to do is drop the oil pan and you have access to it. Messy, but not too tuff.
As for a manual. I would check e-bay for a factory manual. Haynes and Chiltons tend to be lacking in accuracy.
If you do need to replace the oil pump, it is not too tuff. All you need to do is drop the oil pan and you have access to it. Messy, but not too tuff.
As for a manual. I would check e-bay for a factory manual. Haynes and Chiltons tend to be lacking in accuracy.
Elder User
Joined: Dec 2004
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From: North Jersey, New Jersey
I would have to disagree there I dropped my oil pan to replace a gasket on my 96 Aero and jacked the engine up until I was ready to start splitting hoses.
You have to remove the transmission and the starter to get the pan out.
Since the crossmember won't allow clearance for it to drop with the trans in it can only drop straight down partially and raising the engine didn't do any good either I tried desperatly.
If pulling the tranny is not for you I would estimate a shop would charge $700.00 or so mainly because removing the trans and reinstallation is involved. On any other vehicle this would be a piece of cake loosen the pan bolts drop the pan and your at the pump loosen the two bolts and reinstall everything but unfortunatly there is something worse on the Aeros besides the spark plugs
.
You have to remove the transmission and the starter to get the pan out.
Since the crossmember won't allow clearance for it to drop with the trans in it can only drop straight down partially and raising the engine didn't do any good either I tried desperatly.
If pulling the tranny is not for you I would estimate a shop would charge $700.00 or so mainly because removing the trans and reinstallation is involved. On any other vehicle this would be a piece of cake loosen the pan bolts drop the pan and your at the pump loosen the two bolts and reinstall everything but unfortunatly there is something worse on the Aeros besides the spark plugs
.
Last edited by krankshaft; Feb 18, 2005 at 09:54 AM.
Postmaster
Joined: Sep 2003
Posts: 4,452
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From: Southern California
Kanute:
Before you do anything, check the connector at the sensor first and clean it up really well. Check the oil pressure with a real gauge before you do something rash. Look at this site! The reading you have has almost nothing to do with oil pressure.
http://rogueperformance.com/oilsw.html
Before you do anything, check the connector at the sensor first and clean it up really well. Check the oil pressure with a real gauge before you do something rash. Look at this site! The reading you have has almost nothing to do with oil pressure.
http://rogueperformance.com/oilsw.html
Senior User
Joined: Jun 2004
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From: ALCONA ONTARIO
Low oil pressure is typically caused by worn parts and not necessarily the oil pump. If your pressure when tested with an accurate guage is found to be too low, you may have worn main / con rod bearings etc. hate to see you buy and install a pump to find out that it didnt fix the problem. If you do end up going with a pump, I would suggest that you pull off a few bearing caps to see if there is excessive wear since you are already there.
Posting Guru
Joined: Jul 2004
Posts: 2,416
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From: Mitchell, SD
Originally Posted by krankshaft
Oh yes the oil pressure gauge is not a gauge at all its no more then a switch an idiot light at best so it might just be a false reading 
. Like C said first check the connector.
. Like C said first check the connector.
Originally Posted by 93nighthawk
First of all, I would not trust the stock gauge. They tend to wear out over time. I would test the pressure, or have someone check the pressure for you.
As Aerocook said, it could be multiple things causing low pressure, assuming you do have low pressure.
