This is topic Oil Pressure Guage in forum Tech Talk at Northern California Ford Owners  .


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Posted by 1994steeda (Member # 6127) on :
 
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
Thanks
 

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Posted by 5LiterSpeeder (Member # 8234) on :
 
Maybe try your sending unit first. I had a similar problem and it was a cheap easy fix. Good luck
 

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Posted by JohnB (Member # 969) on :
 
...or the connection/wiring to the sending unit. If the connector is loose, it will act like this...
 

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Posted by Blind (Member # 3052) on :
 
oil pumps do not go bad, it's 95% the sending unit or related wiring.
 

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Posted by 90FoX (Member # 1974) on :
 

quote:

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Originally posted by Blind:
oil pumps do not go bad, it's 95% the sending unit or related wiring.

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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



[ July 16, 2009, 11:30 PM: Message edited by: 90FoX ]
 

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Posted by 1994steeda (Member # 6127) on :
 
thanks guys, i myslef am leaning to a connection or sender, it still reads oil pressure when it wants to.

1994steeda
 

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Posted by Blind (Member # 3052) on :
 

quote:

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Originally posted by 90FoX:

quote:

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Originally posted by Blind:
oil pumps do not go bad, it's 95% the sending unit or related wiring.

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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

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quote:

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Originally posted by Blind:

quote:

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Originally posted by 90FoX:

quote:

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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

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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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really? I don't know how metal shavings could have gotten into the oil.
 

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Posted by Duncan Motors (Member # 7045) on :
 
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
 

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Posted by Ty (Member # 4920) on :
 
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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Posted by Ken (Member # 9328) on :
 
[/QUOTE]really? I don't know how metal shavings could have gotten into the oil. [/QUOTE]
Bearing failing?
 

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Posted by wilit (Member # 3367) on :
 

quote:

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Originally posted by Blind:
oil pumps do not go bad, it's 95% the sending unit or related wiring.

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