07xc70 tcv install question

vabob · Post by **vabob** » 05 Jan 2016, 05:06

Shortly after I poked the hoses and heard the vacuum leak she got the "lean at idle" code. Can't remember the number at the moment but I'm positive that was the code.

Eta, it 11℉ out with a windchill if 2℉. So it might be a bit before I step outside. Has your weather been crazy this winter also? It was 70℉ last week.

Post by **scot850** » 05 Jan 2016, 11:23

Yep, also have the crazy weather swings and the head-aches that go with them (and I'm not talking about our cars!).

If you can take another photo of where the pipe routes I will have another look. I can dig out the boroscope and have another look up under the inlet manifold as I can't believe our car isn't the same. I'll have another look later on and post back. Another suggestion with it being so cold, it take it to the dealer and just ask them if they have a clue. I have a good relationship with my dealer and they are usually ok with this 'free' guidance.

Neil.

Post by **abscate** » 05 Jan 2016, 13:19

Snap a pic of the diagram under the hood and post - it will look like this ...mine was under hood - right near driver door on lowest part of hood

vabob · Post by **vabob** » 05 Jan 2016, 15:04

Yea, I saw a sticker like that at the bottom center of the hood. It has to be from the intake to the oil trap. I was in there feeling around again trying to follow the hose with my had, and it popped the other end off also. But by the looks of it, its pretty dry rotted and needs replaced anyways. Looks to be about 4 or 5mm internal diameter maybe and about 8" long.

Going to go to the local auto parts and look for a suitable replacement. Now, can anyone tell me where the intake hookup is. I cant feel it and I dont know exactly where it goes.

hcritz · Post by **hcritz** » 05 Jan 2016, 21:17

There is a small plastic hose that feeds vacuum to the oil/vapor separator...it goes from there to a banjo fitting out on the intake manifold on my car...there are two coolant hoses that loop around it that kind of hide it. You may have to remove the alternator to get the banjo bolt out though...it's a TIGHT fit. The banjo bolt is a vacuum source for the small hose...I'm assuming they ran the hot coolant to help keep for clogging like they did on the vent pipes on the turbos. I can send a pic of the old engine on my work bench tomorrow... it's line had a foam tube over it and it was broken as well.

Post by **abscate** » 06 Jan 2016, 04:54

You can see it with a dental or inspection mirror poked under the intake manifold.

Warning...the vacuum fittings are plastic on my P80 and P2 cars and if you snap them, it's an intake manifold removal job to put it right.

I think your 2007 is similar to my 1999, link here.

hcritz · Post by **hcritz** » 06 Jan 2016, 15:26

I took some pics of my old engine on the bench...I'll try and get them downloaded here tonight.

hcritz · Post by **hcritz** » 07 Jan 2016, 09:29

Can't seem to post pics here?
Hope you were able to find the hose connection.

Post by **JDS60R** » 07 Jan 2016, 09:37

Most likely that like is a replacement line used to connect the port from the underside passenger front side of the intake manifold (bottom side) to the heated oil trap line that runs from the oil trap box to the PTC. You may have (not sure) blown it off with the pressure situation you created.

Start by opening hood, feel under intake on passenger side front for large bolt. Connection is on opposite side facing the back. The only other line that size fits on the driver side . There is a little brass connector facing the engine. It is on the backside of the intake tube that goes left to right and connects all five runners. Open hood, place hand on driver side front of manifold. Roll hand to backside and find brass fitting. Usually easily found. Its the other side that's tricky as it tucked over the power steering pump.

Here is a pic to help

07xc70 tcv install question

Re: 07xc70 tcv install question