Questions tagged [failure-modes]
11 questions
17
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5 answers
When does it make sense to replace a camshaft?
Preamble (Rant)
I was reviewing this question in which the OP presents a repair quotation that includes replacing the "intake camshaft" to fix an engine that had overheated.
To me this recommendation is incredulous. I can understand the need to…
Zaid
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4
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1 answer
OBD MIL commanded status and DTC stored
OBD-II Mode 01 PID 0 gives commanded MIL on (bit A7, see link) and Number of confirmed emissions-related DTCs (bit A6-A0, see link).
I did hit Mode 01 PID 01 on a few cars but got surprising results.
In Skoda Superb, there was no visible Check…
Soumya Sen
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4
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1 answer
Mode 06 approaching failure limit
In Mode 06 (OBD), one gets a current value, max value and a min value for every MID, TID supported. If the current value is out of the max/min range, that MID, TID is considered a 'Fail'. But there may be a case where the current value is within max…
Soumya Sen
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3
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2 answers
What will happen if the knock sensor fails?
I have understood that most recent cars have a knock sensor. This allows among other things greater timing advance due to detecting knock in case the fuel doesn't work well with a greatly advanced timing.
Now, what will happen if the knock sensor…
juhist
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3
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1 answer
Should I be concerned about these cracks on the giubo?
I can see some fine cracks in the giubo/flex disc on my LS1 Lumina's driveshaft.
Is this crack size serious enough to warrant a replacement?
Zaid
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3
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Vibrations and Torque Converter Failure
I've read in various places that one cause of vibrations when shifting from Park to Drive in an ATX is impending torque converter failure. Another person asked about the different ways in which a torque converter may fail, and I was wondering which…
Robert S. Barnes
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2
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2 answers
Engine failed on 2013 subaru impreza (2.0L, non-turbo) CVT, need second opinions
A very close friend of mine recently had their engine fail in a 2013 Subaru Impreza CVT (2.0L, non-turbo) with around 85k miles. They came to me as their "car guy" but I feel out of my league, so I told them I would ask other's opinions and help…
user2731076
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What are instant failure reasons for an older (not old-timer) automobile?
I usually drive my commuting cars until they are quite old - at the time when repairs start to crop up, the amount and frequency of repair bills dictating when I get a new(ish) one.
So far, I never had a problem where the car failed instantly…
AnoE
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What is a "catch can" for piston ring lands?
I was reading a blog by an autocross racer and he lost an engine due to a block crack, which apparently was caused by broken ring lands. In the blog he says that the problem could have been avoided by having a "catch can". What is that?
Cooter Davenport
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How likely is it for something bad to happen to all tires of a car to make them fail ~2 years later?
What are the chances that 2 tire failures in a few hundred miles are connected to something that happened to the car, rather than just unlucky?
I purchased a car from an repossession/police auction with no history 18 months ago. In the last 6…
User65535
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Cat 7 HEUI pump failure incidence rate
Not exactly a car engine, but I am wondering if anyone has seen any statistics or guidance on Cat 7 HEUI pump failures?
The pump compresses engine oil which is then delivered to the diesel injectors to power them for injecting and atomizing the…
mongo
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