Mercedes Ke-Jetronic - The electronic part of the KE-Jetronic system

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Time code
0:00 Intro
0:08 – 0:22 About the video
0:23 – 1:37 Thanks/Join/Patreon
1:38 – 2:18 The continuation
2:19 – 2:59 Greeting a special person
3:00 – 6:20 The main components on the system
6:21 – 8:38 About the X11
8:39 – 9:30 About the ECU
9:31 – 9:41 About the fuel pump relay
9:42 – 12:01 About the OVP
12:02 – 13:50 The symptoms of a bad OVP
13:51 – 14:27 Checking my OVP
14:28 – 14:37 Checking the sensors
14:38 – 16:46 About the crankshaft position sensor
16:47 – 20:10 The coolant temperature sensor and its malfunctions
20:11 – 28:09 The sensor potentiometer and its malfunctions
28:10 – 28:32 About the TD signal wire
28:33 – 30:54 The potentiometer/continuation
30:55 – 34:29 The Throttle position sensor and its malfunctions
34:30 – 36:41 The micro switch and its malfunctions
36:42 – 39:13 CHECK YOUR WIRES ITS CONTINUITY AND VOLTAGE ON THE WIRES
39:14 – 43:27 About the lambda probe/O2 sensor and its malfunctions
43:28 – 46:22 About the hall speed sensor and its malfunctions
46:23 – 47:48 About the air intake temperature sensor
47:49 – 55:08 About the EHA in the last video and its malfunctions
55:09 – 56:59 Counting the pins on the ECU the proper way
57:00 – 57:49 Checking the cold start valve
57:50 – 58:47 About the MAS
58:48 – 60:56 About the KE5 ECU
60:57 – 62:07 About the idle control valve and its nominal values
62:08 – 67:56 About the three pin ICV and the symptoms of a bad ICV
67:57 –68:36 About the altitude sensor
68:37 – 69:23 Ending the video with my girls

What am I talking about?
My topic is the KE-Jetronic injection system which I try to demystify as much as I can.
For all of you to understand the system in brief - Developed in 1973 and being mounted into cars up to 1993 as it went in history. But why these to letters!?(KE) K(from German "kontinuierliche Einspritzung" meaning continuos injection, without interruption) the MECHANICAL injection system on which the fuel starts flowing from the fuel tank sucked by the FUEL PUMP and delivered to the FUEL DISTRIBUTOR which sends fuel to the INJECTORS while the majority of it flows through the FUEL PRESSURE REGULATOR through its return line back to the fuel tank again. The letter E(elektronische Gemischanpassung/electronically controlled mixture adaptation) has to mark the electronic sensors (the developement starting from early eighties) which had to inform the ECU about the current state of the engine so that the ECU(Electronic Control Unit) then could create current signal in mA(miliampers) and send it to four crucial components for the system - the EHA(the electro-hydraulic actuator, a unit consisting of a magnet, an electromagnet and a baffle plate) which had to fine tune the engine in each of its phases, the ICV(the idle control valve), the unit which was predicted for the engines perfect idle, the X11(the diagnostic socket) where the duty cycle(the ideal mixture) was adjusted and the X11/4(the code reader) - the socket which from any codes were read if present using an OBD1 scanner.
An extraordinary injection system which could be fully repaired in your own garage using a multimeter and a pressure gauge only for its fine tuning, together with some common tools.
"Happy Mercedesing"