clk350Driver

clk350 07

Even with a good battery, the car has trouble turning over.

It cranks but doesn't start.

Sometimes it does start and has rough idling.

Sometimes it starts and wokrs great.

Once the car cut out completely while in traffic, luckily it started back up.

Its getting worse and worse. At first I thought it could be the alternator, or the battery, or the starter.

I changed the battery with a new Bosch and it still has some trouble starting when warm. When cold, it seems to turn over with good success.


I pull codes and found several misfiring codes, of course, but they don't narrow it down.

I also found these:

Y49/8 Y49/4

Solenoid problems.

I hear this is a cheap and cheerful fix. My question is, do you think that the solenoids are my problem? With starting the engine?

clk350Driver

error code p0013
p0020

Rudeney

Those P codes have more than one MBZ-specific DTC:

0071 Component Y49/6 (Left camshaft exhaust solenoid) has an open circuit in the wiring. (P0013)

0067 Component Y49/7 (Right camshaft exhaust solenoid) has an open circuit in the wiring. (P0013)

0283 Component Y49/4 (Left camshaft intake solenoid) has an open circuit in the wiring. (P0020)

0744 Continuous camshaft adjustment ( LEFT ): Incorrect position of the intake camshaft (P0020)

All but 0744 are usually wiring issue. 744 is a bad adjuster, which is a major repair I think you need a proper diagnosis with a tool that can pull MBZ codes (SDS or iCarsoft i980) before jumping into any repairs.

clk350Driver

Thanks Rodney

I have these codes:

DTC 0521 tumble flap short circuit to ground
DTC 0283 Component Y49/4 (Left camshaft intake solenoid) has an open circuit in the wiring. (P0020)
DTC 0695 Engine and AC electric Suction fan with integrated Control) output stage
DTC 0071 Component Y49/6 (Left camshaft exhaust solenoid) has an open circuit in the wiring. (P0013)

and a coupe about misfiring, etc...

I guess I am greatful to not have the 0744 in there. I am taking it to a shop tomorrow. I am still hoping its just the camshaft solenoids that are shorting inside or something along those lines. The car is pretty clean and in good shape, with no signs of melted\frayed wires.

Fingers crossed

clk350Driver

Well the worst came to fruition.

I was told that my timing is off. I didn't have the 0744 in the scan tool tho.

Anyways, I tried starting it hearing all kinds of weird noises. Didn't sound good at all like a spinning fly wheel.

The mechanic said that the gears are probably worn as well. So I had to pay 6k for an engine swap. Hopefully from an 09 model.

what a nightmare. i dont think I will ever buy a car like this again, without a warranty. I did all my homework, and everything is supposed to check out and be clear of the balance shaft recall, but now Im slapped with this bill.

it is what it is. I will let you all know how it turns out. hopefully, I will get a really low mileage engine.

Rudeney

0283 and 0071 both point to bad wiring or a bad ECU. 0695 also points to a wiring issue. None of these are indications of timing issues or needing a whole new engine. WOrk timing chain or gears would give different errors that you do not have.

But then there's 0521. While this can also be a wiring issue, it's most likely a broken flap or actuator in the intake manifold. And if broken parts get sucked into the engine, you can have all sort of bad problems that, yes, would mean a rebuild or new engine.

clk350Driver

The more research I do the more I suspect this being a balance shaft issue. Because this kind of thing is absolutely unheard of.

The balance shaft may have worn and caused damage to the camshaft\crankshaft or whatever this thing is balancing. Making the car get screwed up on timing, causing it to not start.

There is no way a faulty flap actuator would cease an engine.

I think that lawsuit is bs and precludes more engine numbers later into the 2007 year build than what is admitted in court. That is why this is happening.

My vin falls outside of range, but Ill be damned if this is not that problem.

There is a guy on with an ML350 who describes these exact symptoms:

http://www.benzworld.org/forums/w164...ailure-18.html

"When I brought it into another MB dealership to pull the codes, they told me the same thing as the other MB dealership -- intake manifold issues, probably the cam shaft, and likely related to the balance shaft. So, a complete rebuild of the engine is probably necessary."


Anyways, I will get a new 09 engine and run it to the ground.

Rudeney

If a flap or other part inside the intake manifold breaks away and gets sucked into the engine (remember - there are no filters, screens, etc. between the manifold and intake valve openings) it could definitely cause a valve to bend or break or damage a piston or rings. This could cause problems ranging from poor performance to engine seizure.

What happens with balance shaft failure is that the timing chain idler sprocket wears prematurely. If you look at the path of the timing chain, starting at the bottom of the crankshaft, it travels up to the right bank camshaft, then back down to idler sprocket (on a forged part of the balance shaft on the V6, or a simple sprocket bolted to the front of the block on the V8), back up to the left bank cam, then down to the crank. (see diagram below).

As this sprocket wears, it introduces slack. The crankshaft pulls the chain tight between it and the left bank, so the left bank stays in proper time. The reduced diameter or bent teeth of the idler sprocket creates a shorter distance. Since the chain can't change length, it stays tight around the idler and between the cams, and the slack occurs between the right cam and crank. The shorter distance between left and right cams means the right cam has to run slightly behind its preferred timing, thus you get the DTCs indicating that the right intake and exhaust cams are "retarded". If you aren't getting those, then the chain distance between the crank and both cams is correct and everything is running in time. It would not be possible for the idler sprocket to be failing without getting DTCs 1200 and 1208.

I still believe your problem is electrical.

Rudeney

Another thing - there is a fairly simple visual inspection you can do to check for balance shaft or other timing issues. You remove the camshaft position sensors and manually rotate the engine to 305 degrees and check the alignment marks on the adjusters:

http://www.benzworld.org/forums/w203...detection.html

clk350Driver

thanks for the help rodney. That is good to know.

I don't think that the mechanic did this to check the timing. But he used his scan tool and said that the timing is off which is why it was reporting false information to the sensors. etc.. idk

Its kind of a done deal at this point.

For the record, the car made terrible sounds and even smoked a little bit each time a tried to start it up. Something inside felt mechanically off.

I am just disappointed, as I've never had a car behave like this, especially with the way this one was cared for.

clk350Driver

He did check the timing by looking through the sensor hole.

I have the car back and everything seems to be back to normal. I am a little worried about the starter though, I though that all those accessories would have been provided with the new engine.

When the engine starts, the starter sounds louder than it did the last time it worked well.

But the car starts and runs reliably now. Do you know where I could look on the engine to find the engine number? I need to know where it came from.

Rudeney

The engine serial number is etched into the bell housing. It is visible, but very hard to see. Remove the engine cover and use a flashlight to look at the edge of the bell down near where the dipstick goes.

clk350Driver

thanks rodney ur the man. Maybe I'll pay you to diagnose the next problem with my car.

marvin-miller

Interesting.....I have a 2006 SLK 350 and have the exact same codes!

0695 M4/7 (Engine and AC electric suction fan with integrated control) : Output stage
0071 Component Y49/6 (Left camshaft exhaust solenoid) has an open circuit in the wiring. (P0013)
1211 Constant adjustment of intake camshaft of left cylinder bank in direction 'Advanced' (P0018)

Car is mint and up to now never a problem. Came back from 30 min trip, shut off, went inside for 3 hours or so and went back out to go somewhere. Cranks but no start. Strong cranking just no start.
I have both iCarSoft and Xentry Pass-Through. DAS gave me the error codes above. Hooked up iCarsoft to see if the RPM signal was going up while cranking. The damn car started!

Replace battery and went for a 30 min drive. At one point it started missing and set codes. Pulled over and it was clearly down a hole. Shaking at idle, the whole 9 yards. iCarsoft scanner said this;
0283 State: Historic
Component Y49/4 (left camshaft intake solenoid) has an open circuit in the wiring (P0020)
0629 State: Current
Misfiring (P0300)
0637 State: Current
Misfiring of cylinder 4: Damages TWC (P0304)

Cleared codes and immediately smooth as silk. 30 mins back home and no issue.

What is surprising is that my original DAS/Xentry codes are exactly the same as the original poster!
I'll attach the printout of my DAS/Entry codes as they have a lot more info.

Would appreciate some insight. Just for starters, while facing the engine I'm assuming the area of interest is on my left ? Or is it left as viewed from the driver's seat?

marvin-miller

The engine was flooding badly (in the end) and the solution was a new ECU.