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Author
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Topic: Oil Pressure Guage
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1994steeda
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Member # 6127
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posted
 
 
Well today,
My 1994 Gt's oil pressure Gauge was going crazy and jumping all over the place when my car was ilding. I check the oil level and the connection to the sender and all looks good.
Could my pump be bad? how do i find out if its bad before it's too late?
or
Could my Gauge just be bad?
1994steeda ![[Confused]](confused.gif)
Thanks
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I don't buy STOLEN mustang parts...
00 C5 Corvette
94 Gt stolen
94 Gt Stolen
95 GT sold
95 Gt Sold
97 Cobra sold
98 Gt sold
01 Bullitt sold
Posts: 1555 | From: San Jose | Registered: Oct 2005
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5LiterSpeeder
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Member # 8234
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posted
Maybe try your sending unit first. I had a similar problem and it was a cheap easy fix. Good luck
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93'Ex 4cyl Notch TFS H/C/I 3.55s 4 wheel Cobra brakes, V2-SQ, 14 psi
RIP BRANDON, SILVERLX-
Posts: 561 | From: Healdsburg | Registered: Feb 2008
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JohnB
Tech Moderator
Member # 969
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posted
...or the connection/wiring to the sending unit. If the connector is loose, it will act like this...
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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Blind
2.3L
CAFords OG
Member # 3052
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posted
oil pumps do not go bad, it's 95% the sending unit or related wiring.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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90FoX
FoX
Member # 1974
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posted
quote:
Originally posted by Blind:
oil pumps do not go bad, it's 95% the sending unit or related wiring.
Lol my oil pump seized on me. They do go bad. There is a "drive shaft" for the oil pump that goes up into the block I think the distributor spins the the shaft(or some gear) and when the shaft turns it runs the oil pump. Either way when the pump seized the gear that turns the shaft kept twisting the shaft for the pump until it snapped into my oil pan!!! ![[Eek!]](eek.gif)
When I removed it, it looked like a spiral stairway
Here is the shaft I'm talking about lying next to the oil pump
[ July 16, 2009, 11:30 PM: Message edited by: 90FoX ]
Posts: 5364 | From: Shooting Skeet | Registered: Oct 2002
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1994steeda
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Member # 6127
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posted
thanks guys, i myslef am leaning to a connection or sender, it still reads oil pressure when it wants to.
1994steeda ![[patriot]](graemlins/patriot.gif)
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I don't buy STOLEN mustang parts...
00 C5 Corvette
94 Gt stolen
94 Gt Stolen
95 GT sold
95 Gt Sold
97 Cobra sold
98 Gt sold
01 Bullitt sold
Posts: 1555 | From: San Jose | Registered: Oct 2005
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Blind
2.3L
CAFords OG
Member # 3052
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posted
quote:
Originally posted by 90FoX:
quote:
Originally posted by Blind:
oil pumps do not go bad, it's 95% the sending unit or related wiring.
Lol my oil pump seized on me. They do go bad. There is a "drive shaft" for the oil pump that goes up into the block I think the distributor spins the the shaft(or some gear) and when the shaft turns it runs the oil pump. Either way when the pump seized the gear that turns the shaft kept twisting the shaft for the pump until it snapped into my oil pan!!!
When I removed it, it looked like a spiral stairway
Here is the shaft I'm talking about lying next to the oil pump
pumps seize because metal shavings from the bearings get in them and cause them to bind up, the pump itself was not the cause of your failure.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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90FoX
FoX
Member # 1974
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posted
quote:
Originally posted by Blind:
quote:
Originally posted by 90FoX:
quote:
Originally posted by Blind:
oil pumps do not go bad, it's 95% the sending unit or related wiring.
Lol my oil pump seized on me. They do go bad. There is a "drive shaft" for the oil pump that goes up into the block I think the distributor spins the the shaft(or some gear) and when the shaft turns it runs the oil pump. Either way when the pump seized the gear that turns the shaft kept twisting the shaft for the pump until it snapped into my oil pan!!!
When I removed it, it looked like a spiral stairway
Here is the shaft I'm talking about lying next to the oil pump
pumps seize because metal shavings from the bearings get in them and cause them to bind up, the pump itself was not the cause of your failure.
really? ![[Frown]](frown.gif) I don't know how metal shavings could have gotten into the oil.
Posts: 5364 | From: Shooting Skeet | Registered: Oct 2002
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Duncan Motors
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Member # 7045
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posted
ive seen vavle stem seal harden an break down an little peice will get caught an freeze the pump, then they also have a presure releive valve as well
Posts: 6310 | From: Vallejo | Registered: Sep 2006
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Ty
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Member # 4920
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posted
if your running a fram oil filter that could also possibly be the culpirt..lately ive been hearing alot of horror stories about fram filters and how the check valve will get stuck and cause the oil pressure to go crazy
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DRIVE FAST TAKE CHANCES
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90 gt nothin special, just your average bolt ons...OUT TO PASTURE
69 fastback project car
Posts: 1400 | From: vallejo | Registered: Oct 2004
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Ken
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Member # 9328
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posted
[/QUOTE]really? I don't know how metal shavings could have gotten into the oil. [/QUOTE]
Bearing failing?
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08 Shelby GT #1292
05 F-150 STX
66 Mustang 2+2
Posts: 25 | From: Sacramento | Registered: Jul 2009
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wilit
Mustang Messiah
Member # 3367
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posted
quote:
Originally posted by Blind:
oil pumps do not go bad, it's 95% the sending unit or related wiring.
Oil pumps do indeed go bad. I had one go out in a 302 I had. The rotors wore out and would slowly lose pressure as they warmed up, eventually getting to the point where I'd have 0 PSI at idle.
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"If a man hasn't found something worth dying for, he isn't fit to live." - Martin Luther King Jr.
Posts: 4793 | From: 37.78514° North 122.40100° West | Registered: Oct 2003
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