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  #1  
Old 01-16-2013, 05:32 PM
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Join Date: Jan 2013
Location: la calif
Posts: 18
1987 w124 Need ignition switch wiring diagram

Hey guys.
I wondering if anyone has a copy for this
Vehicle. It starts effortlessly then stalls
When key is released
it appears
To be a problem in the run circuit.

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  #2  
Old 01-17-2013, 08:19 AM
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Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Does the coil have power (12V) with the key on?
If it does have power, the ignition switch isn't the problem.
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  #3  
Old 01-17-2013, 11:18 AM
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Join Date: Jan 2013
Location: la calif
Posts: 18
Hey doc,
It has battery voltage on terms 1 an 15 so a ignition
Problem is ruled out. Another forum member supplied
Me with the ignition,fuel,electronic eng. Control diagrams.
Again vehicle starts continues to run while spraying either.
And u hear the pump shut down one second after engine stalls
Adjusting the co% makes no difference.it just bogs down when
Key is released. Suggestions appreciated
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  #4  
Old 01-17-2013, 05:00 PM
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Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Have you tried by passing the fuel pump relay so that the pumps run w/o getting signal
from the relay?
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
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  #5  
Old 01-18-2013, 10:28 PM
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Join Date: Jan 2013
Location: la calif
Posts: 18
Yes When bridgeing #7 & 8 engine I studied the fp relay diagram and cant see
Any other imputs to relay other than rpm signal that should keep
The engine from starting while bypassed,

What are some reasons engine wont start even though
Fp relay is bridged and pump is running?
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  #6  
Old 01-20-2013, 10:27 PM
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Join Date: Jun 2011
Posts: 50
Ignition 113

Start 111

Lots of stuff here

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