quron_southwest

Y’all... So I’ve had the oil cooler leak for a while and I’ve just decided to take action and I have parts on the way. I’ve just discovered that my belt is shredded and something in the engine bay is smoking. When I checked it out I pulled out all of the remains of the belt and I have a replacement belt on the way. When the engine speeds reach 1500 I hear a loud wooshing sound as if the A/C is set to max!! I popped the hood and when I press the throttle there’s this ticking sound... What the hell is going on? Any thoughts?

DennisG01

Probably way too hard to diagnose over a forum given the limited info. But I'll take a stab at the whooshing - my first guess would be a loose turbo hose - you're hearing the compressed air escaping.

Ticking sound - find the location of where it's emanating from.

What caused the belt to shred? It's a pretty rare thing, nowadays, for them to spontaneously combust. There's usually a reason. Gotta find that reason or it will happen again. Check all pulleys for abnormal wear... frozen... out of align, etc.

quron_southwest

How do I test the pulleys? The smoke is really bad and that’s what I thought initially. It can’t be the turbo hose because it wasn’t doing that yesterday and it’s a fairly new unit and I just changed my air filters and it was fine along with the orange gasket. It sounds like the sound is coming from the air vents! The ticking sound could be a stuck pulley which is causing smoke...? That’s my initial guess.

DennisG01

Ah, OK... now see, that's more info! So if the whooshing started just after maintenance that you did, then the first thing to do is to retrace your steps and check every connection/seal... including anything on the compression side of the turbo.

Pulley's - nothing too hard or crazy here. Just get up close and personal and play with them - you'll know it when you see it (see ideas in my first post). Compare to the other pulleys.

quron_southwest

I’ll check the pulleys but I promise you it is not the hose. I haven’t touched it in months.

DennisG01

Just because you haven't touched it, though, doesn't mean something couldn't have happened to that pipe. You could very well be right, though - as I mentioned, I can only suggest a possibility based on the info here. It's just that "whooshing", to me, sounds exactly like what happens when a turbo hose lets go.

KrustyKustom

The wooshing sound you hear is the intake air temperature sensor that was knocked out by the belt. The sensor resides under the throttle body and will be hanging by the plug and harness. I know this as I have seen it twice. If you leave it like that it will throw a error code.

When it did it to me the first time it broke the tab that held the sensor in, thus requiring a new sensor.

quron_southwest

Thanks guys for the input! I’m gonna check out the temperature sensor tomorrow morning to see if it’s what you described. The belt slipped and is shredded. Luckily, it only happened in my neighborhood. I’m getting a replacement belt tomorrow, I had one on the way because I predicted that this was gonna happen soon, but it happened sooner than I expected.

Pulleys seem to be fine to me though, so I’m assuming it’s all the oil that made it slip. There’s oil EVERYWHERE. It’s so bad. I’m tackling this job as soon as the parts come in.

quron_southwest

Part number?

quron_southwest

Belt replaced and wooshing sound is still there and there is a lot of exhaust smoke on acceleration! I checked the intake sensor (p/n a0061539928) and it’s still in place. Took of the turbo intake pipe and inspected, good as new. Started the engine and monitored the turbo. All good. I’m confused as hell. What else could it be?

KrustyKustom

If there is a significant charge air pressure leak it should be throwing a trouble code. Is your check engine light on?

Where did all of the oil come from? the charge air lines and intercooler all have some oil in them (normal). Do you have a oil filter housing leak?

quron_southwest

No codes or anything. I’m rolling coal on hard accelerations and this never happened until the belt slipped.

DennisG01

Black smoke like that is unburned fuel... which is most commonly due to a turbo pressure problem such as not getting enough air into the engine due to a leak (whooshing sound). If you can hear the whooshing, can you not locate the area it's coming from? Chock all four wheels, put the emergency brake on, stand to the SIDE of the vehicle and have someone put the car in drive and with their foot on the pedal, rev it up. Note - they won't be able to rev it more than about 2500 or so with their foot on the brake as the car will limit the revs. Should be enough to find it, though.

Try in neutral, first, to see if you get lucky.

Edit... maybe it would be safer to try in reverse than in drive.

Oh... I'm not sure exactly what is responsible for controlling the amount of boost into the engine - see if you can research that - possibly that has failed? Or, depending on what it is, was disconnected during your recent maintenance by mistake? Although, I would think you would get a code if an electrical device was disconnected.

quron_southwest

Yes! My friend heard it coming from like the LEFT (passenger side) of the engine. I checked the manifold sensor and it looked to be in the correct spot and unbothered. I checked the plastic air hoses connecting to the air filters all OK as well. With the belt being replaced the steering is starting to feel tight again.

If it matters, I believe I need to change some tie rods because there’s a loud clunking noise in my steering column.

quron_southwest

It olny makes this wooshing sound in drive.

quron_southwest

I was looking at another forum and p/n 6511530028 was also a culprit. I’ll check that out in a few and will update. I think this was the actual sensor the other member was talking about. I don’t know where it’s located though.

quron_southwest

The Temp sensor (p/n 6511530028) is missing!!! I had no idea where the throttle body was until I took off the air intake resonator (p/n a6421400087) and found the throttle body then i put my finger in the back of the unit and found a dime sized hole.. Pointed a flashlight in there and saw light shining through the throttle body.

I’ll order and replace the sensor and update. Thanks everyone for the help!

DennisG01

There you go - you found the hole in the turbo system! But, I'm confused - up above you said you checked the intake temp sensor and it was good... then you checked again and it was missing (as Krusty originally suggested). Are you sure?

FYI... in the future, start out with as much detail of the issue as you can - it will make things easier for us.

Glad you got it sorted, though.

quron_southwest

I will explain more thoroughly next time. It was all scrambled because I was frustrated initially.

But yeah, there’s more than one intake sensor near the throttle body. The one I assumed, because it was the first one I saw (p/n a0061539928). It was actually the pressure sensor. When I removed the intake resonator I physically saw the throttle body through that hole and so I started feeling around the back of the throttle body area and found the hole where the temperature sensor (p/n 6511530028) actually goes. Shined a flashlight through that hole, saw the light through resonator hole.

KrustyKustom

I am amazed that it is not throwing a code. From my experience the 1/4" size hole where the sensor goes if left open for a couple of acceleration cycles will throw a charge air leak code. In any case can you find the plug that goes on the sensor? Hopefully it did not rip the harness. On these engines when the belt comes off or breaks it takes this sensor right out.

Luckily the sensor is around 27 bucks..

quron_southwest

Just installed the new sensor! Found the old one. It was knocked out for sure and the latch that held it in was broken. It was still attached to the harness and the harness was still good to go, luckily!