20 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWhat's wrong with these oil pressure senders??
Reported or suspected cause
vibrations of the engine
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that report identifying a cause
1
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Reported cause
It was the vibrations of the engine that was killing it...
Discussions that performed work without a confirmed outcome
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I have had an engine that regularly killed oil pressure senders until I fitted a braided line to the block and had it rubber insulated mounted to the chassis.
Leading evidence: 'vibrations of the engine' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'vibrations of the engine' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Install braided line' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I have had an engine that regularly killed oil pressure senders until I fitted a braided line to the block and had it rubber insulated mounted to the chassis.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
The last two were replaced by the dealer under extended warranty.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed · Original poster
The original one was replaced at 27k miles, then another one at 46k miles.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
can anyone send a link on how to remove and replace the sensor ?
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Install braided line
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I have had an engine that regularly killed oil pressure senders until I fitted a braided line to the block and had it rubber insulated mounted to the chassis.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
20 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
It had worked for 130.000km but when I transplanted into my Seven it broke three within a few hours of operation.
Just noticed today my oil pressure gauage reads 0.5 bar when key on engine off. I'm sure it reads around 0 when it's new. This is already the 3rd sender. The original one was replaced at 27k miles, then another one at 46k miles.
I hate it when I have to second guess my gauge reading. The gauge reads ~1.5 bar when fully warmed up (on motul 5w-40) and it goes up and down depending the rev just like before. So it seems to be working correctly.
I'm positive my gauage read ~0.5bar right before each sender failed....will see when this one will fail.
Yea, what's so frustrating in my case is they keep failing every 20k/2yrs. Maybe it's just me being singled out....
Also, it's not rocket science. It's just a dumb pressure sensor! I'll definitely do a post-mortem on this one when it fails. The last two were replaced by the dealer under extended warranty.
Mine is flaking occasionally. It goes to full scale, then to zero - and then it starts working normally again for a few weeks.
I haven't even looked at it yet - it almost behaves like a loose connection.
My car has 200K kilometres though....and I've had it for 70K of those. This is the first time it's gone weird.
Gotta be cheap and easy to fix.
Mine's doing the same thing Jasper's is, which is why I haven't rushed to replace it, but every time I get in and it registers 5 it gets moved up the list of things to fix.
What's wrong with these oil pressure senders??
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Answer: They are junk. Even when they are brand new.
Can't agree more. Today it has decided to behave - back to 0 at key on engine off. I'd rather have it failed completely so I can rip it out of the car.
Mine is a little wacky too. I replaced it last summer and still it'll randomly jump from 3-5 bars. It's especially frightening on the track but since it does it all the time I know better.
I have had an engine that regularly killed oil pressure senders until I fitted a braided line to the block and had it rubber insulated mounted to the chassis. It was the vibrations of the engine that was killing it...
Mike
Mine started acting up when i overfilled by maybe a half a quart. Before the overfill it was around 1.5 at idle and after it jump to around 3. So i suctioned the extra oil out but its still reading between 2 and 3.
That's interesting to know. My engine feels quite smooth both idling and on power though. I think these senders have a mind of their own
Anyways, it's good to know that I'm not alone.
Captain, that is obvious
All cars have engine mounts but that doesn't mean you can't tell a smooth-running engine from a rough-running engine. Regardless, there are lots of other sensors on the engine and I don't recall any of them failing as frequently as the oil pressure sensor. Ppl have tire pressure sensors. Talking about vibrations, those must be beaten up pretty badly being on the wheels! Yet you don't hear those failing everyday.
Bottomline, no excuse for these to fail so frequently if correctly designed and manufactured.
I didn't say it was a Porsche flat 6 though, it was a regular inline 4. It had worked for 130.000km but when I transplanted into my Seven it broke three within a few hours of operation. Identical Bosch pressure sensor...
Mike
If it's anything like this, I totally get it
Someone PLEASE confirm!
http://www.peachparts.com/shopforum/...ts-inside.html
It's a little machine all by itself.
Been reading up on the oil pressure sender issue. My pressure used to run between 3-3.5 at idle, then always to 5 under load, and generally stayed just below 5 when cruising. Starting last week, it sould run .5 to a full point less at all ranges. Going to replace the sensor first, and see if anything changes.
Very likely your sender is acting up. If you click on the link in my previous post, the sender is indeed similar in design.
I was shocked when I saw how it works internally. Can't be more mechanical and hence failure prone
Check out the pics and just think about those two poor wipers busy working, reporting your pressure next time you drive the car
To Porsche's defense, a solid state pressure sensor may be cost prohibitive at $150+ and that's not including the low pressure switch that's included inside our sensor. Our sensor has two terminals, one is to report the pressure (resistance), the other terminal is a low pressure warning switch (on/off) based on some minimum pressure (~0.3-0.5bar I think)
Keep us posted how you make out.
I am sure that it is a bad sender, but my observation that the oil pressure has dropped in a fairly consistent manner with the rpm range, rather than behaving erratically has me a bit concerned. I will update when it is replaced. Thanks!
I read some threads before. You need a 19mm crowfoot wrench, add a long wobble xtension and go from the bottom of the right rear wheel to reach up to the sensor. Maybe with the wheel removed. You can get a whole set of metric crowfoot including 19mm from harborfreight for $9.99
Ok, found the DIY here
https://rennlist.com/forums/10091147-post74.html
This is a source reference. Confirm exact model applicability in the original material.
