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Old 12-16-2015, 09:20 AM
124126140 124126140 is offline
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Join Date: Nov 2010
Location: Huntington NY
Posts: 66
I want to make sure spark plugs are non resistor.
Yes the micro switch at throttle linkage.
Terminal #2 at EZL to ground to test if ECU is reading TPS. Terminal#2 is on
the four pole connector on ignition control module
near the X11.
Yes TPS is throttle position switch on front of throttle body.
Continuity at terminal #2 should be present only when return
spring is attached. Throttle plate should move slightly when spring is detached.
This was my problem, on the 92, and if you have replaced TPS I would check it's
Vacuum reading will let us know if there is a large leak.
I have a thread on Benz world 124 sedan forum (m103 high idle unless ICV disconnected)
It's on page #2 H.D. wrote in with helpful testing procedures.
Duxthe1 is correct ECU is missing a reading from a sensor.
Hope this helps
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