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#1
05-29-2009, 10:32 AM
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Pin # 1 of the diagnostic plug is connected to the RPM output of the EZL.
Could have damaged that signal that goes to the fuel pump relay. You could see if by jumping that fuel pump relay the engine would stay running.
__________________
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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#2
05-29-2009, 10:41 AM
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Quote:
Ok, what is the EZL? At the moment I do have to jump my fuel pump relay to get the car running. What would the fix be? Thanks, Jase
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#3
05-29-2009, 11:57 AM
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Quote:
__________________
 1993 190E 2.3 2001 SLK230 1971 LS5 (454) Corvette Convertible
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#4
05-29-2009, 01:00 PM
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when you jump the fp relay to keep running does the tachometer work? if so it's the relay that needs replacing not the ezl and of course the opposite is also true.
__________________
David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
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#5
05-29-2009, 01:22 PM
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Quote:
Where is the EZL located and how would I verify the it's not working? Also is there a known way to repair it. I work at an electronics company so I could get a guy here to change a component or two if we had the schematics. Thanks for all the replies guys! You've been great! Jase
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#6
05-29-2009, 01:53 PM
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Go to the junkyard for ezl. they are expensive through dealer.
__________________
1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual
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#7
05-29-2009, 03:08 PM
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the ezl provides the spark for the engine,it also provides a signal called TD.this signal runs the tach and keeps the fuel pump relay in after cranking.it also tells the fuel inj computer how fast the engine is running.
__________________
David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
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