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Spooner
Joined: 21 Aug 2008 Posts: 273 Location: Herts
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Posted: Sat Feb 17, 2018 5:55 pm Post subject: Idling at 2000rpm... |
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Hi all,
I've an issue with GB168 whereby it's idling at 2000rpm, not the normal 800rpm which it usually does. I've cleaned the throttle body, looked for split hoses (air leaks...) but no joy.
Anyone have any words of wisdom ? _________________ Cheers,
Gavin
GB168 - electric, yes, electric sunroof
Last edited by Spooner on Mon Feb 19, 2018 7:10 am; edited 1 time in total |
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ReDGryffyN
Joined: 28 Mar 2014 Posts: 17
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Posted: Sat Feb 17, 2018 5:59 pm Post subject: |
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Hi Gavin,
You sure you mean GB199?
Hope all is well for you
ReD _________________ Ex GB199 |
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gilmore
Joined: 01 Feb 2012 Posts: 143
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Posted: Sun Feb 18, 2018 1:38 pm Post subject: |
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Ive got a similar issue.
Does it happen all the time? or just when the engine is warm? Also - how is the throttle response out of junctions - Immediate or hesitation?
thanks
rob _________________ Defender 50th Anniversary Edition GB236
Mercedes ML350CDI Sport
Honda/HM CRE300X Enduro
Honda CRF250X Trail Bike
Husqvarna FE350 Enduro
Honda CB750K4 - 1974
Honda CB750K5 - 1975
Ford Transit Custom (for the bikes) |
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Spooner
Joined: 21 Aug 2008 Posts: 273 Location: Herts
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Posted: Mon Feb 19, 2018 7:09 am Post subject: |
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ReDGryffyN wrote: | Hi Gavin,
You sure you mean GB199?
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Hi Richard,
Woops No I don't. I mean 168 ( I must've of been thinking 199 when I typed) Yes, all good thank you, hope you are well too.
Will change the post. _________________ Cheers,
Gavin
GB168 - electric, yes, electric sunroof |
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Spooner
Joined: 21 Aug 2008 Posts: 273 Location: Herts
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Posted: Mon Feb 19, 2018 7:12 am Post subject: |
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gilmore wrote: | Ive got a similar issue.
Does it happen all the time? or just when the engine is warm? Also - how is the throttle response out of junctions - Immediate or hesitation?
thanks
rob |
Hi,
It happens all the time - from cold and after a run. It's constantly running at 2000rpm. It drives fine, no hesitation and is smooth but just has this annoying 'racing' of the engine. _________________ Cheers,
Gavin
GB168 - electric, yes, electric sunroof |
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Aaron
Joined: 28 Jan 2010 Posts: 64 Location: Surrey
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Posted: Mon Feb 19, 2018 11:31 am Post subject: |
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I had this with GB343 when I owned it. It was the thermostat jammed open on mine, so the engine never 'thought' it was reaching temperature. Replaced and resolved. Might be worth checking that out. _________________ ex-GB343 5.0L JE Supersports
FFRR 4.2 Supercharged
TVR Griffith 500
TVR Cerbera Speed 6 |
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Spooner
Joined: 21 Aug 2008 Posts: 273 Location: Herts
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Posted: Sun Feb 25, 2018 10:40 am Post subject: |
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Quick update:-
RPM is now around the 1000/1200 mark - cold and hot - no idea why its dropped from 2000 rpm. I've change the thermostat for a genuine new one - no change. Cleaned the MAF etc and inside the plenum/Throttle Body Sensor (removed it to take a look but not much to see). Checked for vacuum leaks and can't find anything obvious. No codes being displayed on the scanner - just a simple handheld one. Odd. Might just replace the TBS as its pretty cheap and after reading up on this issue on dedicated V8 forums it is a known cause of what I'm experiencing. Also, when I remove the plug from it, nothing happens rev's wise...we will see. _________________ Cheers,
Gavin
GB168 - electric, yes, electric sunroof |
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Romadog2004
Joined: 06 Aug 2008 Posts: 625 Location: Radnorshire
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Posted: Sun Feb 25, 2018 1:02 pm Post subject: |
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Idle Air Valve - stepper motor
http://new.lrcat.com/#!/1228/13789/14762/1155/14956
The temp sensor can be read when connected to Autologic or other diagnostics. I changed mine for no reason at all as found out with diagnostics that the temp being read was around 70 degrees from cold start in a cold barn. Connected old sensor to loom and got same reading. Turned out an issue with ECU. I now have a spare ecu unlocked for mine - saves a lot of hassle and money when sorting issues. The ecu fitted had Tornado chip, the spare is standard. |
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Spooner
Joined: 21 Aug 2008 Posts: 273 Location: Herts
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Posted: Sun Feb 25, 2018 5:53 pm Post subject: |
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Thanks Romadog2004,
All good info and thanks for the link. _________________ Cheers,
Gavin
GB168 - electric, yes, electric sunroof |
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Spooner
Joined: 21 Aug 2008 Posts: 273 Location: Herts
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Posted: Thu Mar 15, 2018 6:27 pm Post subject: |
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Quick update...
I've read the codes and had the following -
P0102 - Mass or Volume Air Flow A Circuit Low
P0122 - Throttle / Pedal / Position Sensor / Switch A Circuit Low
P0113 - Intake Air Temperature Sensor 1 Circuit High
To recap, I've changed the following :-
- MAF (secondhand, via eBay) - no difference
- New Genuine Crankcase Breather Hose - noticed it was split...no difference
- New ERR4352 Land Rover Range Rover V8 Idle Air Control Valve IAC Stepper Motor - no difference
- New Throttle Position Sensor TPS - no difference
I've reset the codes now and RPM is still hovering around 1000/1100rpm. I'm going to replace the Intake Air Temp Sensor next...when I find a supplier... _________________ Cheers,
Gavin
GB168 - electric, yes, electric sunroof |
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