Oil pressure up and down and now cuts in and out.

Former4banger · April 14th, 2011, 08:03 PM

Alright guys, I have a big problem. So I was out of town for about a month and my brother was house/car sitting. When I got home yesterday my brother told me there was a problem with my mustang. He said that about a week ago the oil pressure gauge started to go up and down. There would be no pressure for a little bit while driving then it would go back up and then go back down and finally after driving for a little while it would read normal. Today I went out to start it up it wouldn’t start. I tried to start it about 4 times then finally it started. I drove it down the road to see what it was doing and sure enough no pressure then it would go up then read no pressure then go back up again. On the way back to my house the car started to cut out. It died out then tried a couple times to start got it close to home then started to cut out again. What could be the problem??? Oil pump, Vacuum lines??? It is a 1992 2.3l Lx any help would be great.

03 R Code · April 14th, 2011, 08:56 PM

I would guess the pressure sending unit is going out. But that shouldn't relate to the car cutting out and dying.

zonker · April 15th, 2011, 01:37 AM

If the gauge and or light is not lying, then it's most likeley debris in the oil pan being sucked up onto the pickup crenn blocking the flow of oil. when you turn off the motor, the debris falls to the bottom of the pan and allows oil to resume travelling thru the pickup screen.

later 2.3 mustangs are known for the oil pan gasket deteriorating and providing the debris thats making the blockage.

Former4banger · April 15th, 2011, 03:19 PM

so would it be alright if i drive the car with the pressure gauge going out? Im going to check the fuel filter today and see what happens.

zonker · April 17th, 2011, 04:46 AM

running the motor with no oil pressure should be avoided at all costs.

when the pressure drops, turn off the motor, wait 5 seconds, and restart it. thats what i did with my old dodge and that worked until i made the fix.

03 R Code · April 19th, 2011, 03:04 AM

If you are asking about just the gauge reading dropping up and down, and sure it's just the sending unit that is bad then it will be fine. But if there is actually a problem with oil pressure moving up and down then do not run it at all.

April 14th, 2011, 08:03 PM	#1
Former4banger Regular 1992 2.3l lx hatch Join Date: Jul 2010 Location: Salem, OR Posts: 105 iTrader: 0 reviews	Oil pressure up and down and now cuts in and out. Alright guys, I have a big problem. So I was out of town for about a month and my brother was house/car sitting. When I got home yesterday my brother told me there was a problem with my mustang. He said that about a week ago the oil pressure gauge started to go up and down. There would be no pressure for a little bit while driving then it would go back up and then go back down and finally after driving for a little while it would read normal. Today I went out to start it up it wouldn’t start. I tried to start it about 4 times then finally it started. I drove it down the road to see what it was doing and sure enough no pressure then it would go up then read no pressure then go back up again. On the way back to my house the car started to cut out. It died out then tried a couple times to start got it close to home then started to cut out again. What could be the problem??? Oil pump, Vacuum lines??? It is a 1992 2.3l Lx any help would be great.

April 14th, 2011, 08:56 PM	#2
03 R Code MM Fanatic unstoppable @ speed of light Join Date: Jul 2006 Location: Knees deep in dat ass Posts: 3,103 iTrader: 0 reviews	I would guess the pressure sending unit is going out. But that shouldn't relate to the car cutting out and dying. __________________ Political correctness is a doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

April 15th, 2011, 01:37 AM	#3
zonker Enthusiast 1991 Mustang LX 2.3 Join Date: Sep 2010 Location: Temecula, CA Posts: 660 iTrader: 0 reviews	If the gauge and or light is not lying, then it's most likeley debris in the oil pan being sucked up onto the pickup crenn blocking the flow of oil. when you turn off the motor, the debris falls to the bottom of the pan and allows oil to resume travelling thru the pickup screen. later 2.3 mustangs are known for the oil pan gasket deteriorating and providing the debris thats making the blockage. __________________ Rob 1987 Mustang 2.3 LX Convert (T5) project 2.5 N/A HP 1991 Mustang 2.3 LX Convert (A4LD) 1992 Mustang 2.3 LX Convert (A4LD) 41.52 mpg!! 1994 Capri XR2 1.6 Turbo Convert 1999 ZX2 S/R 2.0 Coupe http://zxtuner.com

April 17th, 2011, 04:46 AM	#5
zonker Enthusiast 1991 Mustang LX 2.3 Join Date: Sep 2010 Location: Temecula, CA Posts: 660 iTrader: 0 reviews	running the motor with no oil pressure should be avoided at all costs. when the pressure drops, turn off the motor, wait 5 seconds, and restart it. thats what i did with my old dodge and that worked until i made the fix. __________________ Rob 1987 Mustang 2.3 LX Convert (T5) project 2.5 N/A HP 1991 Mustang 2.3 LX Convert (A4LD) 1992 Mustang 2.3 LX Convert (A4LD) 41.52 mpg!! 1994 Capri XR2 1.6 Turbo Convert 1999 ZX2 S/R 2.0 Coupe http://zxtuner.com

April 19th, 2011, 03:04 AM	#6
03 R Code MM Fanatic unstoppable @ speed of light Join Date: Jul 2006 Location: Knees deep in dat ass Posts: 3,103 iTrader: 0 reviews	If you are asking about just the gauge reading dropping up and down, and sure it's just the sending unit that is bad then it will be fine. But if there is actually a problem with oil pressure moving up and down then do not run it at all. __________________ Political correctness is a doctrine fostered by a delusional, illogical, liberal minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

April 15th, 2011, 03:19 PM	#4
Former4banger Regular 1992 2.3l lx hatch Join Date: Jul 2010 Location: Salem, OR Posts: 105 iTrader: 0 reviews	so would it be alright if i drive the car with the pressure gauge going out? Im going to check the fuel filter today and see what happens.

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