Mud-club

Vehicle & Technical => Discovery => Topic started by: Andy41 on October 26, 2008, 21:38:37

Title: temp sensor on head of 300tdi
Post by: Andy41 on October 26, 2008, 21:38:37

I need to renew the wires that run to the sensor on the head
without cut open loom i aint sure where they run to
i assume down to the throttle body but sure ??
anyone got any ideas.

Haynes and LR workshop manuals checked and about as clear as mud.

Title: Re: temp sensor on head of 300tdi
Post by: bilge rat on October 26, 2008, 22:04:57

sensor in the middle of the head ?. aint that something to do with the e.g.r system . sure it is . so iff you have removed that i wouldnt be to worried . but it must go as you say to the throttle position sensor on top of the pump ..alan

Title: Re: temp sensor on head of 300tdi
Post by: Andy41 on October 26, 2008, 22:18:50

thanks for that but not sure it has anything to do with the egr system which is blanked off.
should have said that i replaced the sensor because the connector broke off causing jerky acceleration
and poor running but since its bin renewed its not bin to bad.
i think i will have to trace it at least the wiring loom is already split just to make life a tad easier.

Title: Re: temp sensor on head of 300tdi
Post by: stageonesimmo on October 27, 2008, 16:02:04

As was pointed out to me a few weeks back - that IS the temp sender for the EGR system - its opening point/duration is based on throttle postition AND engine temp, among others....

So if you have binned the EGR I wouldn't spend too much time/effort on it................

Title: Re: temp sensor on head of 300tdi
Post by: Andy41 on October 28, 2008, 18:00:31

ok thanks for all the replys i think ill just ignore the wiring then.... ;)

Title: Re: temp sensor on head of 300tdi
Post by: DiscoDan on October 30, 2008, 09:59:17

Hi.

Taking on the advice above the head temp sensor may partly control the EGR but if you have a later 300 then you have EDC; and the head temp is fed to the ECU as an input to calculate fuelling according to throttle position, engine load, water temp etc.

Hope this helps, Dan

Title: Re: temp sensor on head of 300tdi
Post by: Andy41 on October 30, 2008, 12:09:19

Hi Dan

Its not got EDC its just got EGR mostly blanked off tho but thanks for the info anyway.  :)

Title: Re: temp sensor on head of 300tdi
Post by: karlo on October 30, 2008, 13:22:38

Quote from: discodan on October 30, 2008, 09:59:17

Hi.

Taking on the advice above the head temp sensor may partly control the EGR but if you have a later 300 then you have EDC; and the head temp is fed to the ECU as an input to calculate fuelling according to throttle position, engine load, water temp etc.

Hope this helps, Dan

Will only have EDC if its Auto after late 95.

Title: Re: temp sensor on head of 300tdi
Post by: DiscoDan on October 31, 2008, 03:44:08

Quote from: karlo on October 30, 2008, 13:22:38

Will only have EDC if its Auto after late 95.

I think it is EDC with Auto OR after 95?

Title: Re: temp sensor on head of 300tdi
Post by: stageonesimmo on October 31, 2008, 16:37:18

Nope, my '96 manual hasn't got it..............