rentzington

Driving back at lunch today i noticed that my oil temp suddenly wasnt reading, found that odd but everything else was totally normal no messages no cel just no oil temp.

So I get back and figure i'll turn the car off then on again and see if it was a fluke....THATS when the problems start.

Took 3 tries to start, it kept trying and then sputtered and died. Another try it starts ok no oil temp and I have CEL and the electric fans going crazy

Shut her down and give it some time to cool off fan still going crazy.
Tried again about 20min later same issues...decided to just drive home slowly...drove fine no issues water temp was steady.


Any clues? Need to just take it into the shop since it needed a 40k service anyway,


EDIT:
Went and picked up a code reader and this sucker is full of them
p0343 p0348 p0393 p0368 p0340 p2542 also found in perm codes P0452
I didnt want to clear any codes so some of these might be old, but the cam sensor symptoms seem to be fairly accurate minus the oil temp not reading and the oil cooler fan going ape-S

Clark Kent

Sorry to hear that but best wishes on a fix.

rentzington

Thanks...assumed maybe a bad oil temp reader at first.
the problems startings got me worried though. hopefully i can at least get it to the service dept without a tow

rentzington

so strange, started right up without fail today still no oil temp light and the oil temp fan is going crazy.
Shut it off then back on, failed to start twice but no mis-fires just acted like it couldnt start.
Guess its going to the shop.

odonnks

That is strange. Hopefully it's just the temp sending unit.
That would make sense to run the fan if the sending unit fails.

rentzington

yeah im hoping thats just an oil temp sensor or sending unit, what has me more worried is the startup issues....i'm hoping thats camshaft sensors.
it idles really rough and loud too lots of tapping noise

BLKROKT

I'd stop trying to start it if I were you. Doesn't sound good at all. Get it towed. Good luck.

rentzington

i drove it slowly to the dealer, only about a 10min drive.
the serv adv said the c's of this era have issues with the cam tensioner...the codes are saying its the cam sensors.

I've got an ext warranty that should cover it, naturally it starts perfectly fine and drives fine going to the dealer.

johnny--2k

Hopefully it gets fixed man! That's crazy!

rentzington

What's even crazier is the diagnosis...it's a fluke

Alternator clutch stuck caused the belt to pull off, in process shredded the belt and cut through the cam exhaust sensor wires and then at some point the two wires touched causing a short in the ground for the sensors on the circuit.

I thought for sure it would just be some bad sensor or gasket but man that's one hell of a flukey failure


So now I have to wait for easycare to go take a look and approve the repair

johnny--2k

holy crap!

rentzington

same reaction i had

i'm getting the 40k service out of the way while it's there and got a decent c300 4matic loaner ( the w205 interior is nice).

i've never had a belt slip like that on any car, but S)*#* happens.

AMGonFire

Let us know if easy care pays out been looking for a good extended warrenty glad the problem wasn't somthing major internally

rentzington

Yeah, hoping they do...no ones indicated there are any problems getting easy care to pay for repairs if its engine and powertrain related just trim and interior is hard to cover.

Options on AMG are kind of limited, i know easycare does amg as does fidelity. Hopefully I'll come back with positive news.

AMGeff

Any update on this? Repair and cost? Im curious!