www.Defender50th.co.uk Forum Index www.Defender50th.co.uk
The Defender 50th Owners Club and Vehicle Register
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Throttle position sensor

 
Post new topic   Reply to topic    www.Defender50th.co.uk Forum Index -> General Chat
View previous topic :: View next topic  
Author Message
Michaelsw



Joined: 16 Nov 2018
Posts: 4

PostPosted: Mon Sep 09, 2019 10:33 pm    Post subject: Throttle position sensor Reply with quote

Can anyone confirm that the correct replacement part number for the TPS is LR ERR4278?
_________________
Michael
Back to top
View user's profile Send private message
Romadog2004



Joined: 06 Aug 2008
Posts: 611
Location: Warwickshire

PostPosted: Thu Sep 12, 2019 9:15 pm    Post subject: Reply with quote

Yes
Back to top
View user's profile Send private message
romanrob



Joined: 19 May 2006
Posts: 211
Location: SW London

PostPosted: Fri Sep 13, 2019 8:14 am    Post subject: Reply with quote

How do you know you need one ? they're fairly solid state.
_________________
Rob

GB065 - since 2002
RR10 - 50th Range Rover since 2018
Nanocom unlocked for GEMS
Toylander S2A

Formerly a 200TDi CSW, and a Marine blue SIII 2.25 Petrol
Back to top
View user's profile Send private message
Michaelsw



Joined: 16 Nov 2018
Posts: 4

PostPosted: Fri Sep 13, 2019 8:31 pm    Post subject: Reply with quote

romanrob wrote:
How do you know you need one ? they're fairly solid state.

Rob, the engine is revving too high at tickover and I ran an OBD test which showed up the following codes:
P0123 - throttle/pedal position sensor Switch A circuit high
P1187 - oxygen sensor heater circuit short upstream

So was going to replace TPS and oxygen sensor, as a starting point. Any other thoughts most welcome.
_________________
Michael
Back to top
View user's profile Send private message
romanrob



Joined: 19 May 2006
Posts: 211
Location: SW London

PostPosted: Fri Sep 13, 2019 9:48 pm    Post subject: Reply with quote

OK, I'm not an expert, but, after I cleaned my MAF on my RR (4.6 VCool the engine ran up to 2000 rpm. Since I have the RR I have a Nano (indispensable piece of kit for a P38) and immediately reset the adaptive values. It settled to idle at about 50-75 rpm lower than before. The Nano has GEMS engine module for the engine, so the same thing will decode the 50th too. Have you recently done any work on the engine/ replaced anything?

You could choose to believe the OBD reader, but ideally you should find someone with a nano or faultmate who can corroborate/ clear the codes, unless you don't mind replacing parts. Again, only from my experience but in the last 15 years I have never had to touch the TPS on the 50th, but have had to replace the O2 sensors. When I took my TPS off the RR a few weeks back I was very disappointed that there was nothing to really clean up/ maintain, and unless the internal potentiometer has died, then it seems quite robust.

If you're near SW London I'll be happy to connect it up to the Nano to see what we can work out
_________________
Rob

GB065 - since 2002
RR10 - 50th Range Rover since 2018
Nanocom unlocked for GEMS
Toylander S2A

Formerly a 200TDi CSW, and a Marine blue SIII 2.25 Petrol
Back to top
View user's profile Send private message
romanrob



Joined: 19 May 2006
Posts: 211
Location: SW London

PostPosted: Fri Sep 13, 2019 10:00 pm    Post subject: Reply with quote

https://play.google.com/store/apps/details?id=com.flemcodesign.gems.gemsutility I've not used this, but it's worth a try, and then you can post what you're seeing. One of the other memebers knocked it up
_________________
Rob

GB065 - since 2002
RR10 - 50th Range Rover since 2018
Nanocom unlocked for GEMS
Toylander S2A

Formerly a 200TDi CSW, and a Marine blue SIII 2.25 Petrol
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    www.Defender50th.co.uk Forum Index -> General Chat All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © phpBB Group