Oil pressure too high-97 cobra????

Dan Gray

Founding Member

Oct 27, 2002

93

0

6

Coquitlam, BC, Canada

Dec 11, 2004

#1

• Dec 11, 2004

• #1

My friend bought a 97 cobra just under a year ago and has no problems with the car until now. I just did an oil change on his car adn the oil filter was bulged. I didn't like that so i did an oil pressure check and it reads 80psi at idle and 120psi revved up. It sounds to me that the pressure releif valve is broken or faulty.

Has anyone else run into this? Im just putting out the question to see before i spend a few days pulling the engine out.

Thanks

Dan

 

COBRA90GT

Mustang Master

Sep 22, 2001

6,654

0

87

HOCKEYTOWN ® , MI

Dec 11, 2004

#2

• Dec 11, 2004

• #2

Wow, is that 80psi at warm or cold idle?


I see 80-90psi at cold idle (autometer electric oil pressure gauge here), which is "normal."

 

Dan Gray

Founding Member

Oct 27, 2002

93

0

6

Coquitlam, BC, Canada

Dec 12, 2004

#3

• Dec 12, 2004

• #3

no that is hot.....

 

1995cobraR

Member

Jan 15, 2004

161

10

19

Sandy Springs, GA

Dec 14, 2004

#4

• Dec 14, 2004

• #4

I hope the previous owner didn't put 20W50 mineral racing oil in it. What oil did you use?

You could jack up the engine and pull the pan to check the pump. Stock pumps will not generate 120psi.

Where did you check the pressure?

How many miles on the car (or engine)??

 

S

SicStang89

New Member

Mar 15, 2003

58

0

0

NJ

Dec 14, 2004

#5

• Dec 14, 2004

• #5

The stock idle should be around 38-40 Psi I believe and it should only go up to 80-90 when revved......

 

Dan Gray

Founding Member

Oct 27, 2002

93

0

6

Coquitlam, BC, Canada

Dec 15, 2004

#6

• Dec 15, 2004

• #6

SicStang89 said:

The stock idle should be around 38-40 Psi I believe and it should only go up to 80-90 when revved......

Click to expand...

Thats what i thought, i think im pulling the pan off to see what is going on.

Thanks guys

 

R

rogair

New Member

Dec 12, 2008

1

0

0

Dec 12, 2008

#7

• Dec 12, 2008

• #7

oil pressure too high

Dan, did your friend ever figure out his high oil pressure in the 4.6?
I've got a '99 town car limo w/ same oil pressure....80 at idle,100 @ 3000....