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#1
05-07-2009, 12:16 AM
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99 C280 Cranks but will not start
Hello All,
Checked all the threads I could find on this. I have a 1999 C280 that will sometimes crank over easily but will not start. It's an intermitent problem that just started two days ago. I saw all the posts on the OVP Relay, but I'm not certain if a 99 has this relay. I did check under the black cover on the passenger side in the engine compartment and found a SIEMENS relay with a A 002 542 13 19 on it and wonder if this is it. For those in the know, please tell me if a 99 C280 has an OVP relay, and if so, do I have the right relay? Of course, if you believe there's another cause to this problem, please let me know. Thanks! John 
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#2
05-07-2009, 01:38 AM
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I don't think any Mercedes had a OVP since about 1996. Someone please say if I am wrong but I think that is pretty close.
Just as a guess, it could be a fuel pump relay.
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#4
05-07-2009, 01:43 PM
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Ahh, yes, I missed the intermittent part. Yes CPS is a good guess, especially if it occurs only when it is hot (warmed up). I would think that should throw a code and the CEL but I don't know.
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#6
05-07-2009, 07:25 PM
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Yep, it will start if you let it sit a while.
I have a Harbor Freight Code reader (spared no expense  ) that shows "NO CODES." I've used it on this vehicle before and it has detected issues that were fixed (O2 sensor stuff).Seems like I should pick up a new crank position sensor and give it a try. Can anyone give me a hint as to what this looks like and where it's situated? Really appreciate all the help! John
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