Leaking Valve/throttle Body?

Dasrah · Post by **Dasrah** » 24 Sep 2010, 03:07

Hello, again! As usual, while I was fixing one problem on the car, I found another! My buddy and I were replacing the B4 servo cover a few weeks ago and I figured I would get a good look at the underneath side of the engine and such while I was at it. And as i inched my way towards the passenger side flat on my back, I noticed a considerable amount of what looks like oil on the far pass. side, almost directly under the TB. I have been experiencing some mysterious oil loss here recently and am wondering if this is where the leak is. But if it is the valve body that's leaking; it would be ATF I saw rather than oil, correct?

The car also has a CEL on and throwing code: ECM 261A = Internal Fault In O2 Sensors. The idle has been rough and has been doing the low shudder idle when stopping too. Now, I admit that both the upper mount and lower torque rod need replacing, so I can attribute most of the vibration to that, but not the bad idle. I am at a loss and need to find a solution soon! Im terrified that i will do irreversible damage if i dont fix it ASAP.

Here are some pictures; i was looking up at the back of the engine/towards the pass. side tire.

: IMG_0770.jpg (439.97 KiB) Viewed 1437 times

: IMG_0785.jpg (437.56 KiB) Viewed 1437 times

Any suggestions or ideas on what I need to do next would be wonderful! Thanx!

: i think this was from the top

jda2000 · Post by **jda2000** » 24 Sep 2010, 06:58

in the area around the TB is the PCV oil trap. Possibly the PCV system is clogged. Check for positive crankcase pressure.

Post by **jblackburn** » 24 Sep 2010, 07:02

Odds are that's a leaking cam seal, probably caused by a clogged PCV system.

That code doesn't tell you too much, but I would start by checking around for a vacuum leak before you go about replacing the (front) O2 sensor. The back one will do nothing to affect the way your car runs.

Dasrah · Post by **Dasrah** » 25 Sep 2010, 06:32

jda2000 wrote:in the area around the TB is the PCV oil trap. Possibly the PCV system is clogged. Check for positive crankcase pressure.

Thanks for the replies!

thats the one where you put a rubber glove over the oil fill hole and see if it inflates or flops, right? how difficult is it going to be to clean the PCV? And what size hose is on the assorted vac lines? there are plenty in there that i know need to be swapped and im assuming im going to be pulling a lot of hoses off here soon, so might as well hit them all.

Thanks for the help, sorry if these are dumb-dumb questions! cant know it all, all the time