98 V70 - Rotting Air Intake Duct (For ECU Cooling) Pics

jjones · Post by **jjones** » 25 Jul 2007, 18:05

While trying to get my low-side a/c port open, I found this hose that was rotten-thru... Not knowing what it was, I took the part number (3545307) off it and googled it. Turns out this particular piece has a new part number: 8619305. And you can get them for about $14 from this site: http://www.fcpgroton.com/volvo850other.htm

I've covered the rotting part with the bottom of a disposable aluminum pan then wrapped it with electrical tape. This will do till the new part comes. I'm not sure how big of a deal it is, but I figured better safe than sorry.

Post by **JRL** » 25 Jul 2007, 21:24

Just put tape over it, many do.
Save your money, I'm afraid you're really going to need it with this one

TuHandy · Post by **TuHandy** » 26 Jul 2007, 17:34

That hose supplies air to the "brains" to help keep them cool.

Mine had some holes underneath so I used some black electrical tape and wrapped it a couple times. Looks fine and it should do the trick.

Post by **mrreilly** » 26 Jul 2007, 19:43

Mine too had the same thing. just a few holes on the top of the tube. I also rapped it with some black electrical take. Can barely even notice it.

MadeInAmerica · Post by **MadeInAmerica** » 26 Jul 2007, 22:37

I prefer new parts so I got the new one for $14. The old ones get all dried out and fall apart.

Dont want my car turning into a Tijuana looking car.

decland · Post by **decland** » 24 Apr 2009, 18:40

Difficult to find that part-3545307- but; this site confirmed my decision to use electrical tape (vinyl) for the rotting part. Can anyone who has done the same comment on outcomes after any given period of time?

Post by **FlyingVolvo** » 24 Apr 2009, 18:50

Cheaper here: http://www.partsgeek.com/catalog/2000/v ... _hose.html

$4 cheaper, but as others have said tape will do fine. I'll admit though, I replaced mine when it got really crummy, I'm a bit of a stickler when it comes to things like this.

instarx · Post by **instarx** » 25 Apr 2009, 15:01

Just put black electrical tape around it. Spending money to replace this part is just too obsessive even for me. Come on - it's a few inches of black vinyl tape on a cheap black duct. I put tape on mine 15 months ago and it looks fine. I'm half expecting someone to recommend high-temperature specially-made silicone color-coded tubing for this.

The duct just directs a bit of air from the high pressure area in front of the car to the ECU. Even with holes in it is still works.

Post by **kelvin6** » 26 Apr 2009, 23:55

Typically fails when the tube is moved or pulled around a lot or fails under the heat of the engine bay (and probably more so with turbo cars). My old 850's ECU tube was in perfect shape and that engine bay always stayed pretty cool in comparison to my S70 T5 which literally cooks and my tube is pretty much rotted up like others describe.

donf · Post by **donf** » 27 Apr 2009, 13:18

Just fixed mine yesterday, so I had to post when I saw this topic. The "tube" portions were fine on mine but the "accordian" section was rotted (turbo heat?) so I cut out enough to have a 2 1/2 or 3 inch gap, got some black 1 1/2 inch tubing and 2 nice hose clamps. Looks great, passes air, can easily be removed should the need arise.

Don

98 V70 - Rotting Air Intake Duct (For ECU Cooling) **Pics**