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'02 C320 won't crank

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Old Jun 9, 2009 | 01:23 PM
  #1  
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C320
'02 C320 won't crank

Tried to drive my C320 the other day after it had been sitting for about a week. When I tried to start it the car would crank, but the engine wouldn't fire. After 5 minutes and a few tries, it started.

I drove about a block and the car completely shut down and every light on the console lit up. After stopping, the car cranked up again and I made it to the gas station to fill up b/c I was low on gas.

After leaving the gas station and making a couple of extra stops where the car cranked just fine, I was driving down the road and the car just shut down again - no engine, no power steering, no power brakes (radio and other electronics still worked) and the console lit up again. This time the car wouldn't restart; most of the electronics (radio, lights, windows, etc.) except the a/c still work fine.

Fast forward to today - independent mechanic taking a look at it. He hooks it up to the computer and gets no codes. Checked the battery and his tester said the battery was bad but when he put in a new battery, the car still wouldn't start. We tried the second key in case it was an issue with a bum key and for whatever reason he doesn't think it is the CPS. The really bad news is this morning the drivers side floorboard is soaked (we've had a ton of rain lately).

Anyone know if we've got some leaking issues that can screw up some computer system somewhere or maybe an electronic sensor or connection? Needless to say, I'm nervous about this one.
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Old Jun 9, 2009 | 04:13 PM
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Originally Posted by capitolheel13
.... and for whatever reason he doesn't think it is the CPS.....
CPS leaves no codes and has symptoms identical to yours.
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Old Jun 9, 2009 | 04:24 PM
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How does water get in?
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Old Jun 9, 2009 | 04:39 PM
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Originally Posted by LILBENZ230
How does water get in?
I've read where the four drain holes for the area above where the windshield wiper mechanism resides get plugged and the overflow enters the cabin area. Also, the drain holes for the sun roof get plugged and let water in as well.
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Old Jun 9, 2009 | 04:42 PM
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I can only agree with mleskovar - classic CPS symptoms. If he does not think it's the CPS - ask him why & what he thinks is wrong & why - It's your car.
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Old Jun 9, 2009 | 10:12 PM
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2002 C320
Originally Posted by mleskovar
CPS leaves no codes and has symptoms identical to yours.
I agree that the symptoms are the same, however mine did throw a CEL with code.
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Old Jun 9, 2009 | 10:14 PM
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Noob Alert... What's a CPS?
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Old Jun 9, 2009 | 10:35 PM
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Originally Posted by JLD2k3
I agree that the symptoms are the same, however mine did throw a CEL with code.
You failed to mention that in your post, only that the Mechanic found no codes. Is this 20 guesses? :-)
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Old Jun 9, 2009 | 10:42 PM
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Originally Posted by phoenix_iii
Noob Alert... What's a CPS?
Crankshaft position sensor. A magnet on the flywheel trips the CPS and sends a signal to the ECU to time engine functions like spark and fuel delivery.
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Old Jun 10, 2009 | 07:19 AM
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Originally Posted by capitolheel13
... and for whatever reason he doesn't think it is the CPS. The really bad news is this morning the drivers side floorboard is soaked (we've had a ton of rain lately).

Anyone know if we've got some leaking issues that can screw up some computer system somewhere or maybe an electronic sensor or connection? Needless to say, I'm nervous about this one.
1. you need to switch to a better mechanic

2. why would he leave your window open and letting the rain soak the interior? another reason you need a better mechanic.

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Old Jun 19, 2009 | 08:52 PM
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C320
Just got the car back today and thought I'd give folks an update.

Seems like the key to this mystery was the water in the floorboard. The drain holes below the windshield were clogged and with the days upon days of rain we've had lately, the water made its way into the engine compartment and shorted out the SAM. A nice $2,300 repair that my insurance friends are paying for.

Moral of the story - it isn't always the CPS and keep your car free of leaves and debris!
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Old Jun 19, 2009 | 10:56 PM
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See post #4 in this thread......
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