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  #1  
Old 08-08-2000, 11:39 AM
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Join Date: Mar 2000
Location: Springfield, MO
Posts: 71
Help, I have a 1987 260e that runs excellent but has to crank 15-20 times before it starts? once started runs and idles great, and ideas, how do i check the over voltage protection relay i have been reading about and where is it on my car.

Thanks, Richard
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BigRichard72@home.com
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  #2  
Old 08-08-2000, 12:05 PM
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Join Date: Jun 1999
Location: Surrey, Beautiful British Columbia, Canada
Posts: 750
it is at the firewall behind your battery.
it is the relay with a 10A fuse on top of it. you may only need a new fuse. good luck.
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  #3  
Old 08-08-2000, 03:07 PM
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Location: Springfield, MO
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Pulled the relay and the fuse is good, any other things to check for, it just has to crank about 15 times to start then runs great.

Richard
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  #4  
Old 08-08-2000, 03:54 PM
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Join Date: Jun 2000
Location: Tucson, Arizona, USA
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I believe that an OVP can still be bad even though the fuse is good (not source as much current as a new one.) The part has been revised as well; available at Partsshop. Confirm with Donnie/Steve. Best of luck, Andrew Seidel.
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  #5  
Old 08-08-2000, 03:58 PM
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Is there a way to test the OVP relay?
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  #6  
Old 08-08-2000, 04:30 PM
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Location: Tucson, Arizona, USA
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Search the threads--there are a few recent posts with good details (a 300e, I think.) The basic idea is to remove the air filter, look for the Electro-Hydraulic Actuator (black box, 2 pins, mounted to the firewall-side in my case), hook an ammeter in-line with the circuit, and measure current. I seem to remember it was ~20mA with the key-on-engine-off. In the case of my '89 2.6, it was actually the EHA itself that was worn out, but I needed an OVP in the case of my 2.3. Hope this helps--the other threads explain better, Andrew Seidel.
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