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The leak could be in the rear where you can’t see. You might see a little smoke after driving awhile on the highway or smell some burning oil if it leaks enough.
It could also be leaking some oil into the spark plug tube and in that case, the valve cover may need to be removed to replace those tube seals.
It most likely does not need a clamp if it fits on tight as there is almost no pressure on the PCV hose at all. A parts store should be able to match it up and cut one to size for you. Don’t use sealant .
A bad TPS and/or MAP sensor will cause a lot of issues like this. Easiest way to diagnose is to use a DVOM and test the sensor and connector.
Turns out it was my a/c pressure transducer shorting out when it warms up.
It shares a 5V reference with MAP and TPS. Also shares a ground with crank sensor, coolant temp sensor and air temp sensor.
No wonder my car felt like it was falling apart.
Probably worn ball joint.
Jack up that wheel so it spins freely. Grab the wheel at 3 and 9 o’clock and see if you can wiggle it by pushing/pulling. Do the same for 6 and 12 o’clock. If it does have play in it, look at the suspension as you do it and see what’s moving around.
Today showed my transmission also behaves strangely while this is going on.
Everything is fine until the car warms up and the fans cut off. Then the shifting is odd. Sometimes it’ll shift from 1st to 2nd then back to 1st then to 2nd, 3rd, etc. Sometimes it’ll jolt forward (slightly) at a stop while in gear. Like the transmission tries to engage for a second.
Figure I’ve either got a PCM issue or there is a ground issue in that circuit. Thinking more towards PCM as it happens pretty predictably once the engine warms up.
Brake noises can definitely be directional. When rear brakes get bad it’s very common for them to make noise only in reverse. I’d start with the brakes.
I’m wondering if my alternator is failing causing these issues. I recently began hearing this sound from under the hood:
https://vocaroo.com/i/s1EMuXftttf6When I put my ear up to the alternator it sounds loudest, but when I step back it sounds more like in the middle of the engine.
Today, when it happened again, I restarted the car and left the a/c off and the fans stayed on. It only seems to happen when car is up to operating temp.
The car has cooled off and now the fans seem to be working again. It’s a very weird issue. I’m wondering if the relays could be failing or overheating. But I’ve swapped them around once and the issue arose again which leads me to believe it is not related to the relays.
I also don’t think the PCM would be affected by engine temperature. It also doesn’t make sense since with the a/c on, the fans should come on as well regardless of engine temp. And why would they work on start up only to not work seconds later even with a/c on or engine over 220F…?
It seems there is at least one thing ruling out each component.
I think it is just coincidence. If it’s the same oil and same level, it won’t have an effect on the temp of the engine. Was anything else touched while the oil was changed?
I don’t think a head gasket blowing would be so dramatic. Seems like a cracked head or block would do that. It is a bit puzzling to me unless there was some kind of material failure in the metal.
I guess coolant could get into the intake hose via the PCV system or a breather if enough coolant made it into the oil passages.