Went for a drive, lost power and now car exhaust sounds like it has cams

[eacmen]

I'll say it again even though I'm apparently wrong - check your coils. It's free.

I've never seen bad coil cause an all cylinder misfire and VANOS codes. But i've been wrong before.

Usually when a coil fails you get a misfire on one or two cylinders.

[davidinnyc]

I had all cylinders misfire with a bad coil over cylinder 4, which is why I’m suggesting it. I also had VANOS codes and it was literally a dead coil. It costs exactly $0 to check.

[sapote]

I had all cylinders misfire with a bad coil over cylinder 4, which is why I’m suggesting it. I also had VANOS codes and it was literally a dead coil. It costs exactly $0 to check.

A bad ignition coil should cause misfire with fuel cut off. None of OP listed codes with fuel cut off.

[jpy1980]

I had all cylinders misfire with a bad coil over cylinder 4, which is why I’m suggesting it. I also had VANOS codes and it was literally a dead coil. It costs exactly $0 to check.

Hey David thanks for the suggestion. At this point I have anything to lose so I’ll check this. I actually bought this car last year with 78,800 miles and now it has 81,555 miles. I think I did a full tune up with coil packs at like 80,500 miles. Bummer if it is the coils!

what was your procedure on checking the coils?

[davidinnyc]

Hey David thanks for the suggestion. At this point I have anything to lose so I’ll check this. I actually bought this car last year with 78,800 miles and now it has 81,555 miles. I think I did a full tune up with coil packs at like 80,500 miles. Bummer if it is the coils!

what was your procedure on checking the coils?

At idle, disconnect each coil one at a time and listen for a change in the idle. When each good coil is unplugged you’ll hear a clearly noticeable change in the idle, but when disconnecting a bad coil your idle won’t change.

I just saw that you flatbed the car already so I’m sure you’ll figure out the problem sooner rather than later, just hope it doesn’t become an expensive hunt for a solution.

[jpy1980]

Quick update:

the shop thought that maybe the solenoid that I got from Beisan was bad so they tried another to no luck. Solenoid was fine. Now they are trying to replace the cam sensors to see if that helps.

haha I miss my car! Booo

[eacmen]

Quick update:

the shop thought that maybe the solenoid that I got from Beisan was bad so they tried another to no luck. Solenoid was fine. Now they are trying to replace the cam sensors to see if that helps.

haha I miss my car! Booo

Did they check the VANOS oil pressure? Or verify the oil pump disc is intact?

Could be cam sensors, though I thought you were getting both inlet and exhaust codes? Doubtful both sensors failed at the same time.

[jpy1980]

Did they check the VANOS oil pressure? Or verify the oil pump disc is intact?

Could be cam sensors, though I thought you were getting both inlet and exhaust codes? Doubtful both sensors failed at the same time.

Not sure as I haven’t heard back from them yet. I agree with you regarding the sensors. I’ll keep you guys posted after I hear back

[jpy1980]

Heard back yesterday and they said that they are in the process of taking off the cover to check the Vanos and other items.

they even had the tuner of my newly acquired Karb csl box (tuner was hte) put the stock tune back on to see if it was that. Hassan said it was definitely mechanical.

I asked them to pressure test the Vanos and also check the coil packs but they don’t believe it’s that. They said they’ll do some further diagnostics and get back to me. No word today but if I don’t hear back by the end of the week, I’m not sure what to do. May need to tow it to another shop.

kinda bummed as I haven’t driven the car in a couple of weeks now haha I miss the csl intake sound!

[jpy1980]

I also bought the new Vanos seal kit from Beisan and told them to install it but they said they don’t think it’s that too. I hope they figure this out!

anyone know of any other shops in the LA/OC area that can diagnose my car should the not figure it out? Near redondo Beach is better!

[davidinnyc]

Heard back yesterday and they said that they are in the process of taking off the cover to check the Vanos and other items.

they even had the tuner of my newly acquired Karb csl box (tuner was hte) put the stock tune back on to see if it was that. Hassan said it was definitely mechanical.

I asked them to pressure test the Vanos and also check the coil packs but they don’t believe it’s that. They said they’ll do some further diagnostics and get back to me. No word today but if I don’t hear back by the end of the week, I’m not sure what to do. May need to tow it to another shop.

kinda bummed as I haven’t driven the car in a couple of weeks now haha I miss the csl intake sound!

Hopefully they run a pressure test and check the coil packs simply because you asked them to do it...

Good luck.

[jpy1980]

Hopefully they run a pressure test and check the coil packs simply because you asked them to do it...

Good luck.

Yea we will see.

what shops do you use since you’re near me?

[jpy1980]

UGH finally got an update.

The shop said after taking a look at the VANOS system, the bearing inside shattered. He believes it was on the exhaust side. The same shop did the exhaust hub work a couple of months ago, but said that this was not related to that. The bearing that shattered was not an item you can rebuild. I have no idea what they are saying but after look at the photos, it looks bad.

So now we are trying to source a whole new VANOS unit. He believes getting a new unit will solve the issue. They are going to look for one, but if they can't I am just going to order the Beisan system. Totally sucks since I just spent so much on this car with the CSL intake hahahahahahah.

See photos.

What do you think?

[heinzboehmer]

You should ask them for a list of what exactly they did to the VANOS. That is part of the VANOS oil pump (which is what interfaces with the exhaust hub). Usually, the pump discs are replaced with redrilled units that reduce the backlash between the disc and the hub.

If that is what was done to your car, then sounds like installer error or an issue with the replacement part.

[jpy1980]

You should ask them for a list of what exactly they did to the VANOS. That part is the VANOS oil pump and is what interfaces with the exhaust hub. Usually, the pump discs are replaced with redrilled units that reduce the backlash between the disc and the hub.

If that is what was done to your car, then sounds like installer error or an issue with the replacement part.

This is what I thought and I even asked if it was the oil pump disk and he said it wasn't. It was the bearing that was there. Not sure what to do at this point.

I did tell them to do the oil pump disk but they said that the exhaust hub was the only thing that needed to be changed.

See attached invoice of what they did.