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Hi all - asking for assistance with P0118 & P0300

Hi all - asking for assistance with P0118 & P0300

 
Old 04-27-2013, 09:20 AM
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Default Hi all - asking for assistance with P0118 & P0300

Hi All,

This is probably my 1st post asking for help. Although I've been lurking on this forum for sometime. Lot's of knowledgeable folks that are willing to help with issues that come on our A6's on this forum. I've got a 2001 A6 2.7T that I bought brand new and it currently has 70k miles on the clock. Been relatively trouble free except for general maintenance requirements.

The engine light came on last Friday and I finally was able to go to the local parts place to pull the codes. They are as follows:

P0118 - Engine Coolant Temp Circuit High Input.

P0300 - Random/Multiple Cylinder Misfire Detected.

On the P0118 I'm thinking it maybe the coolant sensor as it intermittently shows the correct temp on the dash gauge.

One the P0300 - Since it's not identifying a specific cylinder it maybe simply a spark plug swap. The plugs currently have 40k miles on them (I know way too long in between swap out).

Any input would be greatly appreciated!

Cheers,
Ray
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Old 04-29-2013, 05:28 PM
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you need a new Green temp sensor, its on the passenger side rear cylinder head. If yours is black, thats the old defective temp sensors to be replaced by green ones. I would clear codes after the sensor and drive it and see if the rest return.
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Old 05-01-2013, 12:48 PM
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Originally Posted by Prospeeder View Post
you need a new Green temp sensor, its on the passenger side rear cylinder head. If yours is black, thats the old defective temp sensors to be replaced by green ones. I would clear codes after the sensor and drive it and see if the rest return.
That sounds like a good start.

Thanks for the response!

Ray
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Old 05-25-2013, 04:43 PM
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Update - Temp sensor replaced with green temp sensor, also replaced broken vacuum line connecting to the driver side diverter valve. Cleared CELs and so far so good. Also replaced all spark plugs (NGK-PFR6Q), car seems to idle better and runs a bit smoother (plugs had 40k miles). Gaps were checked on the old plugs and the new ones, they were all set to .029, therefore gaps were left alone. The plugs for cylinders 1 & 4 were a bit more difficult but not too bad to replace. The old plugs had what appears to be rust on the insulating white material where it meets the bottom portion of the plug. It wipes it right off.

There is some seeping oil coming from the passengers side valve cover. Right now doesn't seem to be too bad but this will probably be the next item on the list for repair.

Cheers,
Moncho
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