W124 throttle body test
01-22-2023, 04:38 AM
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W124 throttle body test
Hi
My throttle body 408.227/111/001 has stopped working. Does anyone know where I can find a wiring diagram or any tests I can do to see if the fault in in the unit?
thanks.
My throttle body 408.227/111/001 has stopped working. Does anyone know where I can find a wiring diagram or any tests I can do to see if the fault in in the unit?
thanks.
01-22-2023, 09:12 AM
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Buzzed all the connections out and they seem ok. The servo works fine on the bench, micro switch is good and the pots are smooth.
The symptoms are: Starts fine but rough with 700rpm in P; rpm drop to 400 when put in gear; very hesitant until 1800rpm then sweet.
Any thoughts of where to look next or shall I take to a workshop?! G
The symptoms are: Starts fine but rough with 700rpm in P; rpm drop to 400 when put in gear; very hesitant until 1800rpm then sweet.
Any thoughts of where to look next or shall I take to a workshop?! G
01-26-2023, 12:24 PM
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Ok I bought an OBD1 tester. My 1994 E220 WDB1240422C1264 doesn’t seem to be listed but pin 8 is giving me error code 6 and 8. I can clear them but they come back if i switch off and on again. HFM sequential Multiport fuel injection says error 6 is unused and error 8 is limp home.
I have replaced the Over voltage relay and have a mass air sensor on order. Runs very lumpy until 2000rpm
Anyone any thoughts what i should do next?
I have replaced the Over voltage relay and have a mass air sensor on order. Runs very lumpy until 2000rpm
Anyone any thoughts what i should do next?
