Oil Pressure Issue?
03-18-2010, 01:19 PM
#1
Staging Lane
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Oil Pressure Issue? My oil pressure has been acting up a bit. The car starts up fine in the mornings with my guage reading at about 40psi. It'll read fine as I drive goes up when I accelerate. Then as I sit at idle the pressure will start to drop all the way down to about 20 which I think is dangerously low. Then I get back on it and the needle goes up. The car has never done this before. My dad and his friend seem to think its a sensor gone bad. Any ideas? I really would like to get the car checked out.
03-18-2010, 02:21 PM
#2
First off all, that really isn't dangerously low. LSX engines tend to very high oil pressure, but 20psi really isn't that low.
I would agree that if it used to be higher and for no reason started reading low, you might want to look into it.
Is this a stock pump?
I would agree that if it used to be higher and for no reason started reading low, you might want to look into it.
Is this a stock pump?
03-18-2010, 03:11 PM
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LS69TA, no I havent changed the oil weight. That's why its strange. At highway speeds it used to read anywhere from 55-60 now its just barely at the 40 marker.
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03-18-2010, 04:05 PM
#8
OMG im having the same issue brother. I MEAN THE SAME ISSUE.
Pressure was 55-60 on highway like you said and now if I am driving down the highway it is at 40 and when get on it the needle barley compensates until I tap my brakes THEN the needle moves a little past 40 to say. . 43. and when i came to a redlight i saw my pressure drop all the way down to 20. It scared the **** out of me.
I drove it home and haven't driven it since.
I'm pulling the intake manifold off now to check my "oil pressure sending unit" is cracked or not. Im gonna replace it . . cracked or no crack just to be on the safe side.
Pressure was 55-60 on highway like you said and now if I am driving down the highway it is at 40 and when get on it the needle barley compensates until I tap my brakes THEN the needle moves a little past 40 to say. . 43. and when i came to a redlight i saw my pressure drop all the way down to 20. It scared the **** out of me.
I drove it home and haven't driven it since.
I'm pulling the intake manifold off now to check my "oil pressure sending unit" is cracked or not. Im gonna replace it . . cracked or no crack just to be on the safe side.
03-19-2010, 09:49 AM
#9
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OMG im having the same issue brother. I MEAN THE SAME ISSUE.
Pressure was 55-60 on highway like you said and now if I am driving down the highway it is at 40 and when get on it the needle barley compensates until I tap my brakes THEN the needle moves a little past 40 to say. . 43. and when i came to a redlight i saw my pressure drop all the way down to 20. It scared the **** out of me.
I drove it home and haven't driven it since.
I'm pulling the intake manifold off now to check my "oil pressure sending unit" is cracked or not. Im gonna replace it . . cracked or no crack just to be on the safe side.
Pressure was 55-60 on highway like you said and now if I am driving down the highway it is at 40 and when get on it the needle barley compensates until I tap my brakes THEN the needle moves a little past 40 to say. . 43. and when i came to a redlight i saw my pressure drop all the way down to 20. It scared the **** out of me.
I drove it home and haven't driven it since.
I'm pulling the intake manifold off now to check my "oil pressure sending unit" is cracked or not. Im gonna replace it . . cracked or no crack just to be on the safe side.
03-19-2010, 12:30 PM
#10
oil pressure Damn, so I'm not the only one with this problem, lol. Yeah I'm gonna pull mine off as well and do the same. I agree, better to play it safe. I'm also gonna replace the pressure sensor as well. Let me know what you find when you pull the intake to check the sending unit.
Now, cold pressure is around 60-70 and hot at 30-40.
Don't use a BS filter, been getting higher oil pressure since changing to a Mobil One filter. It worked for me.
03-19-2010, 01:08 PM
#11
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This is my story, I have a 98 z28, stock motor, on my last oil change, I used a Mobil one filter M1-206 and Pennzoil 10-30 regular dino oil. My old filter was a Fram, pressure always ran low, 40 cold and between 20 and 25 hot.
Now, cold pressure is around 60-70 and hot at 30-40.
Don't use a BS filter, been getting higher oil pressure since changing to a Mobil One filter. It worked for me.
Now, cold pressure is around 60-70 and hot at 30-40.
Don't use a BS filter, been getting higher oil pressure since changing to a Mobil One filter. It worked for me.
03-19-2010, 06:30 PM
#12
Well, my 6.0 i installed has me wondering, it is about 35 or so after it gets hot and i beat on it at idle, thought it should be higher. Never goes below 35 really, 30 at the lowest but shoots up with the RPM, as long as it doesnt make noise i guess it is ok.
03-19-2010, 10:11 PM
#13
Damn, so I'm not the only one with this problem, lol. Yeah I'm gonna pull mine off as well and do the same. I agree, better to play it safe. I'm also gonna replace the pressure sensor as well. Let me know what you find when you pull the intake to check the sending unit.
This is my story, I have a 98 z28, stock motor, on my last oil change, I used a Mobil one filter M1-206 and Pennzoil 10-30 regular dino oil. My old filter was a Fram, pressure always ran low, 40 cold and between 20 and 25 hot.
Now, cold pressure is around 60-70 and hot at 30-40.
Don't use a BS filter, been getting higher oil pressure since changing to a Mobil One filter. It worked for me.
Now, cold pressure is around 60-70 and hot at 30-40.
Don't use a BS filter, been getting higher oil pressure since changing to a Mobil One filter. It worked for me.
03-19-2010, 10:19 PM
#14
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Several variables, temps, viscosity, filters, senders, etc. As was stated earlier 10 psi per 1000 rpm = all good. On another note pressure is not nearly as important as volume
03-19-2010, 11:55 PM
#16
hopefully I don't have that problem.
Well, I changed out the Oil pressure sending unit and nothing happened. Same ****.
So tomorrow im gonna go get my oil changed and im gonna get them to drop the pan and take a look at whats going on with it. If its somin major I will sell this damn thing and buy a shitty civic.
Well, I changed out the Oil pressure sending unit and nothing happened. Same ****.
So tomorrow im gonna go get my oil changed and im gonna get them to drop the pan and take a look at whats going on with it. If its somin major I will sell this damn thing and buy a shitty civic.
03-20-2010, 12:04 PM
#18
Problem fixed.
I went and got my oil changed. Had them put new Mobil 1 5w 30 and Wix filter.
The pressure actually changes again with throttle and after a 2 hr drive has never seen 20 psi THANK GOD! highway 40-50psi idle 36psi WOT 58psi
I really hope you get everything going good OP. Good luck bro!
I went and got my oil changed. Had them put new Mobil 1 5w 30 and Wix filter.
The pressure actually changes again with throttle and after a 2 hr drive has never seen 20 psi THANK GOD! highway 40-50psi idle 36psi WOT 58psi
I really hope you get everything going good OP. Good luck bro!
