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Old 04-10-2016, 02:51 PM   #1
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Rodents...

Hello all,

I just pulled my Boxster out after having it sit for a while and thought I would do a visual inspection before taking it out for run. For the most part, everything looks good, however after looking in the engine compartment, I found something had taken up residence and made a comfy home on the top part of the engine compartment After cleaning everything out, I found a yellow wire chewed on (but not severed) and a blue and white one total chewed through.

The car starts and runs fine, everything seems to work no CEL...does anyone know what these wires do? How tough of a job would it be to replace them?...

I've attached a picture of what's left.

Any advice would be greatly appreciated.

Thanks

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Old 04-10-2016, 02:56 PM   #2
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Year, Model, Trans, side of engine, near what else???
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Old 04-10-2016, 03:11 PM   #3
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It's an '03 Boxster S with a Tiptronic. Attached is a picture of where the wires are...this isn't my engine compartment, but looks close.

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Old 04-10-2016, 03:40 PM   #4
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Please provide link to owner of car in pic so we can scold them for how dirty that thing is.

Thanks.
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Old 04-10-2016, 04:09 PM   #5
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Here's the link, honest...it's not mine.

https://www.google.com/search?q=boxster+engine+compartment&rlz=1C9BKJA_enUS592US612&hl=en-US&prmd=ivsn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwio2cLbl4XMAhUL1GMKHTt3BGAQ_AUIBygB&biw=1024&bih=653#imgrc=Jyada1WPiStn6M%3A
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Old 04-11-2016, 06:36 AM   #6
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I believe those are the wires that power the second rear fog light. Or not.

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Old 04-15-2016, 04:26 PM   #7
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Just checked all the lights and everything works that I can see or find.
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Old 04-15-2016, 05:15 PM   #8
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I recommend you disconnect the battery and repair the wiring before running the car again. The blue and white wires are twisted pair so they are most likely part of the car's Canbus network. Cheap way to fix: splice them back together and seal them up with some heat shrink tubing. Tape up the yellow wire with heat resistant electrical tape.

Expensive way to fix: replace harness.
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Last edited by Paul; 04-15-2016 at 05:21 PM.
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Old 04-17-2016, 06:38 AM   #9
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Quote:
Originally Posted by Paul View Post
I recommend you disconnect the battery and repair the wiring before running the car again. The blue and white wires are twisted pair so they are most likely part of the car's Canbus network. Cheap way to fix: splice them back together and seal them up with some heat shrink tubing. Tape up the yellow wire with heat resistant electrical tape.

Expensive way to fix: replace harness.
+1 really good advice. Allowing them to short may become very frustrating and expensive.
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Old 04-17-2016, 09:32 AM   #10
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Thanks for the advice...the wires are under the throttle body / intake manifold. I've done some searching, but haven't found a good article on removing the throttle body / intake manifold to get at this area. Anyone good links or videos?

Thanks again...
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Old 04-18-2016, 07:19 AM   #11
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Clean the Throttle Body Porsche DIY
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Old 05-01-2016, 08:14 AM   #12
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Started working on it today, and not as bad as I had thought. I have removed everything to get at the connector, however the brittle intake boots need to be replaced now. While I'm waiting on their arrival, does anyone know what this connector does? I've searched all over and looked a number of wiring diagrams and pictures and can't find anything. The colours on the wires are BL/BK (Blue/Black) and WT/BK (White/Black).

Thanks

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Old 05-01-2016, 02:53 PM   #13
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Aren't those wires going to the MAF?
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Old 05-01-2016, 05:52 PM   #14
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Aren't those wires going to the MAF?
No, I don't think so...the MAF is closer to the air filter box. The connector I'm showing looks like it's bolted to the block or something.
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Old 05-01-2016, 06:10 PM   #15
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The purple arrow points to the knock sensor.
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Old 05-01-2016, 06:20 PM   #16
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Originally Posted by rsf View Post
Started working on it today, and not as bad as I had thought. I have removed everything to get at the connector, however the brittle intake boots need to be replaced now. While I'm waiting on their arrival, does anyone know what this connector does? I've searched all over and looked a number of wiring diagrams and pictures and can't find anything. The colours on the wires are BL/BK (Blue/Black) and WT/BK (White/Black).

Thanks

That would be a detonation sensor. It retards timing if it senses detonation.
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Old 05-01-2016, 08:42 PM   #17
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Since I'm this far into it, should I replace the sensor(s) proactively?...do they go bad very often? I have to order / wait for the intake boots to arrive since they deteriorated during the removal process.

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