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Old 05-01-2008, 01:08 AM   #1 (permalink)
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Date registered: Oct 2007
Vehicle: 2002 C230k Sport Coupe M111
Location: Chino, CA
Posts: 138
Please help with power issues...

ok so heres the problem guys....every now and then my car would shut the power to the point were it feels like im N/A

i cleaned the MAF and it ran good for about a day and a half then back to no boost

the weird thing is that when i turn off the car and sit there for about 15 secs and turn it back on the power would return

back then it happend to me once like a few months ago, but now it happends every other day if not everyday...very irritating

ive searched everywhere but i havent really found a clear answer

so basically i have to turn off my car like everyday on the way to wherever im going to get my power back up to full when it decides to act up

what do u guys think it is?
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2002 C230K Sport Coupe 2.3L
Mods - 18' SL65 Reps || Auto Meter Boost Gauge || K&N Air Fitler || Muffler Delete ||

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Old 05-01-2008, 07:34 AM   #2 (permalink)
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Date registered: Aug 2007
Vehicle: C320 4matic
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Not too sure if I can help, I'd take it into the dealership to have them check it out ... on another note, those rims are sweet. Are they gunmetal amg? Have any other pics?
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Old 05-01-2008, 09:00 AM   #3 (permalink)
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Date registered: Oct 2007
Vehicle: 2002 C230k Sport Coupe M111
Location: Chino, CA
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Quote:
Originally Posted by Tri-Star View Post
Not too sure if I can help, I'd take it into the dealership to have them check it out ... on another note, those rims are sweet. Are they gunmetal amg? Have any other pics?

they're silver with polish lip ill see if i can get pics up after i figure this problem out lol


so yea anyone else? i dont feel like taking it to my indy mechanic or the dealer just yet
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Old 05-01-2008, 10:20 AM   #4 (permalink)
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Ok i thought things over and see your loosing boost. On my WRX when I was loosing boost I checked the F/I lines, you could have a hole leaking out the pressure. We use to check this by wetting the hose lines with soapy water then running the engine and looking for any noticable bubbles.

Do you have your maps reflashed? Is your car running normal when at idle?
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Old 05-01-2008, 11:04 AM   #5 (permalink)
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Date registered: Oct 2007
Vehicle: 2002 C230k Sport Coupe M111
Location: Chino, CA
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Quote:
Originally Posted by Tri-Star View Post
Ok i thought things over and see your loosing boost. On my WRX when I was loosing boost I checked the F/I lines, you could have a hole leaking out the pressure. We use to check this by wetting the hose lines with soapy water then running the engine and looking for any noticable bubbles.

Do you have your maps reflashed? Is your car running normal when at idle?
my car runs fine on idle

i dont think i have a boost leak cuz my runs great until it decides to act up

so basically this is what happends to me......im running fine, my car is boosting hard as ever...then all of sudden my power cuts (not fuel cut) and now i feel like im running N/A even tho i can hear the supercharger engage somewhat....so then i pull over to the side and shut the car off for a short time...and after that my car is pulling hard again until it decides to act up again

so i cleaned my MAF once again about 15 min ago and the air filter last night

hopefully getting all those bugs and bug pieces out of my air filter did the job lol

im thinking since there was so much Sh-t in my filter it was dirtying up my MAF very quickly so yea ill keep u guys posted and let you know whats up

Last edited by SC230 : 05-01-2008 at 11:06 AM.
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Old 05-01-2008, 11:31 AM   #6 (permalink)
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Sounds like something is wrong with your f/i set up. Hopefully it is just an air problem (maybe o2 sensor) ... with the warmer weather your car's intercooler needs to work a little harder that might be something to think about as well. If it's more than that then maybe your oil line is clogged or leaking. I'd have a good look through the engine bay for anything leaking, even coolent.

It's hard to tell without actually driving the car.

btw, the sig pic is def hot.
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Old 05-01-2008, 02:07 PM   #7 (permalink)
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Vehicle: 2002 C230k Sport Coupe M111
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Quote:
Originally Posted by Tri-Star View Post
Sounds like something is wrong with your f/i set up. Hopefully it is just an air problem (maybe o2 sensor) ... with the warmer weather your car's intercooler needs to work a little harder that might be something to think about as well. If it's more than that then maybe your oil line is clogged or leaking. I'd have a good look through the engine bay for anything leaking, even coolent.

It's hard to tell without actually driving the car.

btw, the sig pic is def hot.

thanks man lol
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Old 05-02-2008, 08:53 AM   #8 (permalink)
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Does it do it at the same RPM every time? Does it only do it under WOT runs? Does it start to ping when it happens? Have you ever changed the fuel filter? Are you running good gas in it?
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Old 05-03-2008, 09:59 PM   #9 (permalink)
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Have your computer error codes checked, I have the same symptoms and instead of going to the "stealership" bought a code reader, found out it seems I have a common failure of this model, leaking cam sensors, when this happens, your O2 sensor dies as well.

The error codes were;

O2 sensor error
Bank A cam position sensor error
Bank B cam position sensor error

I've seen posts where a deales may charge up to $3000 to fix this, I'm looking to do it myself, see:http://www.benzworld.org/forums/w203...onnectors.html
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Old 05-04-2008, 02:34 AM   #10 (permalink)
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Vehicle: 2002 C230k Sport Coupe M111
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Originally Posted by ruizmilton View Post
Have your computer error codes checked, I have the same symptoms and instead of going to the "stealership" bought a code reader, found out it seems I have a common failure of this model, leaking cam sensors, when this happens, your O2 sensor dies as well.

The error codes were;

O2 sensor error
Bank A cam position sensor error
Bank B cam position sensor error

I've seen posts where a deales may charge up to $3000 to fix this, I'm looking to do it myself, see:http://www.benzworld.org/forums/w203...onnectors.html
i have a scanner to tell me the codes i get....for the longest time ive been getting o2 related codes...but yesterday i threw a TPS code...but now its back to o2 and the occasional MAF code...i just bought a MAF recently too...i hope its not messed up already

so im guessing my problem is gonna be either the o2 bank1, MAF, or TPS...i hope its not all 3
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