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CLK-Class (W208) 1998-2002: CLK 200, CLK 230K, CLK 320, CLK 430 [Coupes & Cabriolets]

No Fuel Pump and Spark, What controls them?

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Old Jun 21, 2014 | 12:12 AM
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1998 CLK320 Cabriolet
No Fuel Pump and Spark, What controls them?
I have an issue with my fuel pump and ignition system.

Engine cranks but doesn't have fuel or spark.
Bridging fuel pump from relay (30 to 87) activates fuel pump but still no ignition.
Anyone have any ideas what controls the fuel pump and provides spark?

Thank you.
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Old Jun 22, 2014 | 07:42 AM
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1998 CLK320 Cabriolet
Anyone have any idea as to what could fail and cause no spark and no fuel but still allow the engine to crank over?
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Old Jun 24, 2014 | 08:55 PM
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1998 CLK320 Cabriolet
Anyone on these forums anymore?
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Old Jun 24, 2014 | 11:07 PM
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2001 CLK320
Check this
Try checking the CPS,,,,, crank position sensor. I think its by the bell houseing but not sure. This helps start the car,,,,,, could be it
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Old Jun 24, 2014 | 11:30 PM
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1998 CLK320 Cabriolet
Originally Posted by Lorenz320
Try checking the CPS,,,,, crank position sensor. I think its by the bell houseing but not sure. This helps start the car,,,,,, could be it
Hi Lorenz320, I thought something like that in the beginning but it doesn't explain why the fuel pump and spark would not work simultaneously.
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Old Jun 24, 2014 | 11:33 PM
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Spark
Im not sure on that either. I googled it and there was quite a few write ups on both of ur issues.....if u havent googled it try it
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Old Jun 25, 2014 | 01:03 AM
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Originally Posted by Lorenz320
Im not sure on that either. I googled it and there was quite a few write ups on both of ur issues.....if u havent googled it try it
I've looked everywhere for a solution even the mobile mechanics I had come past have no idea, it didn't show up on their diagnostic equipment or anything.
I've got a auto electrician coming past soon I'll see what he says.
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Old Jun 25, 2014 | 11:23 AM
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That's a strange one for sure, hopefully not ECU. You probably need one of the dealer STAR computers to figure it out.
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Old Jun 25, 2014 | 09:02 PM
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1998 CLK320 Cabriolet
First of all thank you to everyone for their input.

IT'S THE CPS

I just had an auto electrician over after a short period of testing he pulled out the CPS and the whole tip was chewed up with tiny copper wire hanging out.
Looks like when I bottomed out the sump hit the ground and somehow caused the CPS to break apart.
Last edited by CLKTHEO; Jun 25, 2014 at 10:21 PM.
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Old Jun 25, 2014 | 09:13 PM
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Flush it out for sure,,,, with oil only. Dont start it....then id refill with good oil and a new filter
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