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Re: '02 Aero - Problems Posted by B Millar [Email]  (#1109)  [Profile/Gallery]
(more from B Millar) on Thu, 3 Jul 2008 11:21:46
In Reply to: Re: '02 Aero - Problems, Jake  [Profile/Gallery]
, Thu, 3 Jul 2008 10:46:11
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I'm still not buying that you need to replace your turbo, especially a Mitsubishi TD-04, at 47k miles. The reason Saab put out PCV update #6 (and all the lousy ones in between) was because the original PCV setup is inefficient and plugs up easily. If you have a clog somewhere in the PCV, oil cannot drain from the turbo correctly. Think about putting a straw into a glass of water, putting your thumb over the hole, and pulling the straw out- the water stays in the straw, right? So all the oil going into the turbo has nowhere to go except out into the intake side of the turbo, through your intercooler, and into your TB. I bet if they unbolted the exhaust pipe from the turbo it would be dry on the exhaust side, which would confirm the turbo seals are okay. Now, it is entirely possible you've got some sludge creating a blockage, but I think I would rather pay ~$100 to take the valve cover off for a quick inspection than try to kill 2 birds with one stone (when one of the birds may not even be a bird) by looking for sludge when they replace the turbo. Like I said before, it's perfectly normal to have oil in the intake piping and throttle body. I would be worried if there WASN'T oil in there. The tell-tale sign of a leaking turbo is a puff of blue smoke at startup. If there's no smoke, I'd put my money on the fact the turbo is fine. When they said the throttle body was "dirty," do they mean dirty? Or just oily? There could be some carbon buildup on it (which would give you your P1230), which would again be indicative of some PCV hiccups, but dirt can't come from a failing turbo.
Please don't take me as some idiot who is telling you what to do, I'm just saying what I think is up with your car from the information you've given us, and what I'd do in the situation. Anything is possible with these cars, but I'd ask for more proof that the oil in the TB is from the turbo before spending lots of money on a (relatively) young turbo.
IGN cassette and IDM are the same thing. It's the part that sits on the valve cover. It says "SAAB Direct Ignition" on it. Most cars use spark plug wires and a distributor somewhere. Saab uses this thing to get juice to the plugs and it also gets readings through the plugs and sends them to Trionic to help adjust emissions and gas mileage. It's a major component of "Ecopower." If your TB is actually getting dirty, not just oily, maybe you should check for a crack or hole in your intake where unfiltered air is entering the system? Good luck and keep us updated please!
, Thu, 3 Jul 2008 08:23:43, Tue, 8 Jul 2008 11:10:09, Thu, 3 Jul 2008 10:00:35
, Thu, 3 Jul 2008 17:50:00, Thu, 3 Jul 2008 10:46:11, Thu, 3 Jul 2008 11:21:46 <-- Viewing This Message, Thu, 3 Jul 2008 12:24:16, Thu, 3 Jul 2008 13:24:42, Thu, 3 Jul 2008 08:33:12, Thu, 3 Jul 2008 08:42:28, Thu, 3 Jul 2008 09:31:06
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