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Disco won’t rev more than 1000rpm
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Willow_1972
 


Member Since: 10 Jan 2018
Location: Isle of Mull
Posts: 1

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Causeway GreyDiscovery 3
Disco won’t rev more than 1000rpm

Hi I’m struggling a little with my disco 3 (as per)
On returning from a trip down to England from home (isle of mull Scotland) I noticed a strong smell of fuel... upon closer inspection the return fuel line of the injector pump had somehow come lose and was dumping fuel out everywhere...
I’d assumed I’d dislodged this somehow when fitting new EGR valves prior to my trip down south some days earlier....
no real harm done a simple push and it’d clicked back into place, quite why this had taken so long to work loose was a mystery but I thought little more of it until starting my engine back up....
my car from cold starts first time every time and doesn’t miss a beat, but it will now not rev over 1000rpm when cold, and once warm will not rev over 2700rpm !? Making it undrivable.
I’ve blead the return fuel valve situated just above the injector pump and have a good strong fuel supply
I’ve checked all the EGR leads and cables..... the pressure sensor on the air inlet between the egr valves has been removed and cleaned....
nothing has worked, and it simple won’t rev enough to drive it but the tickover is sweet as....!?
I’ve had a fault finder on it and has thrown up the code P0403 Exhaust Gas Cuircuit, although the EGR’s are both new...

Any ideas anyone......?
Regards
Shaun.
  
Post #189977910th Jan 2018 5:51 pm
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Allan_T
 


Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034

United Kingdom 2007 Discovery 3 TDV6 GS Auto Java BlackDiscovery 3

You're missing two characters from the DTC, generic scan tools tend to report the first four. There's two codes listed for the TDV6, P0403-00 & P0403-19.





 GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494
Electrical Fault Diagnostics
 
 
Post #189982210th Jan 2018 8:12 pm
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reicre
 


Member Since: 21 May 2020
Location: Burton-on-Trent
Posts: 7

United Kingdom 
Re: Disco won’t rev more than 1000rpm

Willow_1972 wrote:
Hi I’m struggling a little with my disco 3 (as per)
On returning from a trip down to England from home (isle of mull Scotland) I noticed a strong smell of fuel... upon closer inspection the return fuel line of the injector pump had somehow come lose and was dumping fuel out everywhere...
I’d assumed I’d dislodged this somehow when fitting new EGR valves prior to my trip down south some days earlier....
no real harm done a simple push and it’d clicked back into place, quite why this had taken so long to work loose was a mystery but I thought little more of it until starting my engine back up....
my car from cold starts first time every time and doesn’t miss a beat, but it will now not rev over 1000rpm when cold, and once warm will not rev over 2700rpm !? Making it undrivable.
I’ve blead the return fuel valve situated just above the injector pump and have a good strong fuel supply
I’ve checked all the EGR leads and cables..... the pressure sensor on the air inlet between the egr valves has been removed and cleaned....
nothing has worked, and it simple won’t rev enough to drive it but the tickover is sweet as....!?
I’ve had a fault finder on it and has thrown up the code P0403 Exhaust Gas Cuircuit, although the EGR’s are both new...

Any ideas anyone......?
Regards
Shaun.



did you find out what was wrong in the end mate ????
  
Post #214796021st May 2020 9:01 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

Have you disconnected the maf sensor ? As mine did the same because I hadn’t pushed the plug in enough to lock in
 Metal auto sump & fluid change (3 hrs)
LR door puddle projectors (10 mins)
Tinted Bonnet wind deflector (10 mins)
All Intercooler pipes and Tbolts (2hrs)
3 injectors replaced so far (30mins)
Sunroof drain pipes both sides 2.5 hrs)
Rear discs, shoes,pads,callipers,flexi hoses, rigid brake line, n/s upper hub carrier bush and rear n/s upper arm (13hrs over 2 days) 
 
Post #214796221st May 2020 9:06 pm
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reicre
 


Member Since: 21 May 2020
Location: Burton-on-Trent
Posts: 7

United Kingdom 

Hi daz yeah I have tried unplugging and plugging maf made no difference and plus the maf is a new one only about 2 months old
  
Post #214798121st May 2020 10:22 pm
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reicre
 


Member Since: 21 May 2020
Location: Burton-on-Trent
Posts: 7

United Kingdom 

These are the codes I'm getting
  
Post #214798221st May 2020 10:28 pm
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reicre
 


Member Since: 21 May 2020
Location: Burton-on-Trent
Posts: 7

United Kingdom 

Has anyone come across this watchdog code before???
  
Post #214798321st May 2020 10:30 pm
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reicre
 


Member Since: 21 May 2020
Location: Burton-on-Trent
Posts: 7

United Kingdom 

  
Post #214798421st May 2020 10:30 pm
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reicre
 


Member Since: 21 May 2020
Location: Burton-on-Trent
Posts: 7

United Kingdom 

its had a full engine rebuild about 2 months ago new turbo EGR has been deleted it was running fine till the injectors were removed and the seals were replaced because they was slightly leaking, since that it will not rev over 2.5 k engine system fault comes up no power when driving at all!!! and the all terrain is disabled i have checked all the ovbs connects to see if there lose but there all ok, i've even replaced the throttle pedal to no avail. i'm really scratching my head on this one any suggestions guys ?????
  
Post #214798821st May 2020 10:44 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hi

Check ur connector that’s on the left hand side of ur throttle body

Have u got a built in mobile or a tracker device

Hope that helps

Ps, hope u don’t mind me saying , if u fill in ur profile with the model of disco u have will always help more,
   
Post #214798921st May 2020 10:48 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

reicre wrote:
its had a full engine rebuild about 2 months ago new turbo EGR has been deleted it was running fine till the injectors were removed and the seals were replaced because they was slightly leaking, since that it will not rev over 2.5 k engine system fault comes up no power when driving at all!!! and the all terrain is disabled i have checked all the ovbs connects to see if there lose but there all ok, i've even replaced the throttle pedal to no avail. i'm really scratching my head on this one any suggestions guys ?????


Hi

Would it be air in the system, have u checked the Low pressure valve at the back of the engine with a pressure gauge , should be 0.5bar or 7.25 psi

Hope that helps
   
Post #214799021st May 2020 10:54 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

Do a hard reset
I had the same problem and I only changed the aux belt tensioner

I took the induction pipes off and tried to start it with the map and Mas sensor disconnected causing exactly what you have

It’s something really stupid stick at it and backtrack what you’ve messed with
 Metal auto sump & fluid change (3 hrs)
LR door puddle projectors (10 mins)
Tinted Bonnet wind deflector (10 mins)
All Intercooler pipes and Tbolts (2hrs)
3 injectors replaced so far (30mins)
Sunroof drain pipes both sides 2.5 hrs)
Rear discs, shoes,pads,callipers,flexi hoses, rigid brake line, n/s upper hub carrier bush and rear n/s upper arm (13hrs over 2 days) 
 
Post #214822422nd May 2020 9:21 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Bow down Thumbs Up
   
Post #214826623rd May 2020 12:32 am
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Did this ever get resolved?
 Must stop buying shiny toys....  
Post #21655363rd Aug 2020 10:31 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

Don’t know did hear from him , nice if he comes back to reply and have an answer
 Metal auto sump & fluid change (3 hrs)
LR door puddle projectors (10 mins)
Tinted Bonnet wind deflector (10 mins)
All Intercooler pipes and Tbolts (2hrs)
3 injectors replaced so far (30mins)
Sunroof drain pipes both sides 2.5 hrs)
Rear discs, shoes,pads,callipers,flexi hoses, rigid brake line, n/s upper hub carrier bush and rear n/s upper arm (13hrs over 2 days) 
 
Post #21661706th Aug 2020 9:30 pm
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