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#1
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Does CPO cover diesel glow plugs?
Just got error code for cylinder 3 glow plug after 90K Kms and would like to change them all. |
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#2
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That's odd: I forgot if you ever ended up replacing the thermostat or not? Glow plugs are not a maintenance item in diesel engines (as opposed to the similarly named spark plugs in the gasoline engine).
In any case, there's the BMW bulletin that may help you: https://drive.google.com/file/d/0B1e...ew?usp=sharing PS: sorry I haven't got around looking up the vacuum. I've been waiting for the oil change to come up: it's due in 3K miles so a couple of months... |
#3
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Quote:
No worries about vacuum check.I can wait.. |
#4
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You got it!! You know my story with thermostat and glow plugs so I won't repeat it...
Although I doubt BMW would replace the thermostat, getting new glow plugs shouldn't be a problem... |
#5
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Yes i have already tried with the dealer to get thermostat changed under CPO warranty but no success.You know these stealerships.They just cant admit the problem.But now i wont take any chance after replacing glow plugs.Will change thermostat as soon as possible.
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#6
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I compared my error code with the error codes shown in the SIB but unfortunately mine are different.In SIB codes are related with the glow plug controller but on mine its 4A4E which is simply cylinder 3 open circuit.Which means they wont relate my problem with the SIB.But still i am gonna try first with the dealer before ordering glow plugs.I have allready checked with one dealership and answer was "glow plugs are not covered".Will check with different dealer.
I think they wear out eventually.Ambient temp might be playing role in their life expectancy as in cooler temps,they go more heating cycles. |
#7
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If the thermostat is allowing the engine to run cooler, the glow plugs will be activated. So a failing thermostat can cause the glow plugs to fail or shorten their life.
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#8
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Quote:
http://www.bmw.ca/ca/en/usedvehicles..._Guide_Eng.pdf Doesn't hurt to ask, but it sounds like the dealer already gave you the answer.
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#9
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Started an another thread related to glow plug diagnosis and intake removal.
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#10
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Quote:
Arguably if the thermostat WAS covered and it failed, and led to the Glow Plug failing, that should be covered. But (a) the thermostat isnt listed and (b) they'd have to buy that cause/effect argument. Also, if a part fails to last the 6 years as it was intended, that is a defect in the mfg or design. The defect is 'failure to be robust'. Taken to an extreme, Mfgs can't design parts that fail in one year, and state "it wasn't a 'manufacturing defect' since it is actually designed to last one year and made it to one year- so not covered under the mfg defect warranty". Well, at least under USA law. |
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