rich21
Active Member
E220, anyone know what the rough temperature of the fuel temp sensor should read when cold? If this was faulty would it cause a diesel knock on idle?
Last edited:
Fuel temp sensor
- Thread starter rich21
- Start date
mersum1es
Senior Member
- Joined
- Sep 25, 2010
- Messages
- 2,358
- Reaction score
- 434
- Location
- Finland
- Your Mercedes
- W212/-09/350CDI, W219/-07/320CDI, EX:W220/-01/320CDI, EX:W211/-04/320CDI, EX:W210/-01/270CDI
maybe, if it shows too low temp... in may even prevent engine to tart is showing too high value. Of course temp is ambient temp when start engine, some higher when running.
supernoodle
Senior Member
- Joined
- Sep 7, 2021
- Messages
- 375
- Reaction score
- 310
- Your Mercedes
- E220 2005 2.1D
Yes, ambient after a soak and then shouldn't increase too much during use, probably not too different to intake temp.
Fuel temp is used to control switch over from pressure control valve to quantity valve control and for pump protection. It'll start to derate engine once temps get above about 60deg.
Not useful for anything else as its fuel temp into the pump. The pump is about to squish the fuel up to several hundred or thousand bar, which puts heat in, which massively changes temp.
Fuel temp is used to control switch over from pressure control valve to quantity valve control and for pump protection. It'll start to derate engine once temps get above about 60deg.
Not useful for anything else as its fuel temp into the pump. The pump is about to squish the fuel up to several hundred or thousand bar, which puts heat in, which massively changes temp.
Comand (Europe) Ltd are the leading specialists in supplying and fitting Comand, Linguatronic, Media interface kits, UHI phone, IPod interfaces and much more.