Menu toggle

oil pressure

JamesO

JamesO

New member
If there is actually no oil pressure, the top end will rattle like a rattly thing. I would check the wiring to the oil pressure sensor.
 
Oil pressure switch? I'm assuming there is one! Take a look at Clarks - http://www.clarks-garage.com/ - there is a trouble shooting section under oil pressure, hope that helps? Cheers Andy
 
I'm no mech but I know of people disturbing the wiring on the oil pressure sender/switch when doing other work on the car ( a garage did it to my 944) . If there was no problem before hand then it has to be suspect number one surely ? Best of luck Mas
 
Hopefull it is just a disturbed wire but i cannot see any and i was unsure as to why both the oil pressure guage and the oil light would come on or are they both fed from the same sensor?
 
Hello, help needed.

Having recently completed the changing of some brake pipes, followed by a short test drive i put my 1983 944 up on ramps at the back and axle stands at the front to check for any leaky fittings then left the car like that for a couple of days until i had time to look at it again.

When i came back to the car i started it up to remove it from the ramps and the oil light stayed on so i took it off the ramps and turned it off. I presumed that the problem was that the oil level was a bit low, as it was on the bottom notch on the dipstick, and the car had been sat with a slightly nose down stance. So i got some more oil and topped it up to the top notch on the dipstick.
Problem not solved, oil light still comes on and the oil pressure guage doesnt go up at all.
It sounds fine when i start it put i have not run it for more than 10 seconds just in case.

Does anyone have any ideas as to a possible cause and suggestions on how to check them out.

All help massively appreciate, many thanks Tom
 
It is one sensor with 2 terminals, it lives on the drivers side, towards the front of the engine. You will have to get under the car.
 
From the symptoms you're describing (i.e. all fine before lay up and then some work) I would concur with other posters, most likely cause = oil pressure sender and/or faulty wiring. If you read the Clarks manual trouble shooting section for oil pressure readings it states that most false oil pressure issues are down to the sendor and/or gauge. There are two wires into the sender, one = variable pressure 0 - 5 bar the other = 1bar low pressure warning light (large red light on dash). I had a similar ish issue last year at the Ring - sender was going off and sitting at idle in the queue to get back into the car park the red warning light was flashing on. I replaced the sender (having carefully checked the wiring) and all is well again with a healthy +4 bar. BTW, if you have to change the sender = bitch of a job ! Might be easier on a N/A car but very tight with oil pipes, PAS work and ARB mounts, Chris
 
Looks to be plenty of room around the sender, may be one joy of an early car with no power steering! How do i check sender or is it just a case of trying a new one? Thanks for all help so far, just hoping it is nothing too serious. Tom
 
http://forums.pelicanparts.com/porsche-924-944-968-technical-forum/387542-can-anyone-good-uninstalled-oil-pressure-sender-check-something-me.html Just came across that - hope it helps.
 
Ok so i tested the sensor, and i was getting the same resistance weather the car was running or not, so i thought it must be the sensor, but a niggling doubt in my head said what if it is not the sensor and their really is no pressure, surely then i would also get the same resistance weather the car was running or not. So i removed the sensor and turned the engine over expecting (hoping) to spray oil out of the hole thus proving that i have oil pressure and a faulty sensor, alas no oil came. So i removed the oil pressure relief valve and also turned the engine over, long shot but still hoping for some pressure to reveal itself, alas also nothing. So now i am thinking i have got a broken oil pump or something, wondering if the pump could need priming? Or is it going to be a full strip down to reveal what is amiss? Thank you for any help, Tom
 
Got the oil sorted (i hope) stripped the front belt covers off and felt a little daunted by the prospect of going further into the engine. I was still baffled by the fact that the engine seemed to sound ok and not rough or tappety, as i would have imagined if their was no oil travelling around the engine. So i thought i would try taking the pressure sensor out again, this time i blipped the throttle and ended up with oil everywhere! wahey!!! I think when i took the sensor out previously the oil ran out of the filter so it had to fill it back up before it would come out. Then i put the car back together and refitted the sensor, when i next started the car the oil light went out and the presuure guage went up to 5, so i think all is well! Just need to clean the inside of the wheel and garage next! Any way happy days and thanks for all of your help Tom
 
Always a relief when you expect the worse and it turns out to be nothing, you wont be so miffed at having to clean all the oil up [:D]
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Back
Top