 | Home > Puma (Tdci) > Idling surges |
 
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| jlerra Member Since: 10 Jul 2009 Location: Gibraltar/London Posts: 149   
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Hi,
I had a similar experience once when travelling through mid Spain when the idle was erratic after filling up with diesel at a petrol station. I then drained the filter, and refilled with diesel - no problem since! I put it down to contaminated fuel. El pepe flamenco JLS 'El Pepe Flamenco' |
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14th Jul 2011 9:46am |
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| Zagato Site Supporter Member Since: 08 Jan 2011 Location: Billingshurst West Sussex Posts: 4990 
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Do a search or pm "22900013A" as he started a long thread on this recently with the same problem - possible causes and solutions were mentioned
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14th Jul 2011 1:09pm |
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| 4wheeler Member Since: 13 Apr 2010 Location: Melbourne Posts: 87  
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I had a similar experience with my Defender. I too felt the problem might have been fuel related and drained some fuel from the fuel filter. Water and other rubbish came out. Draining the rubbish from the filter fixed the problem.
The problem arose again after a trip to the bush. Vehicle idle was a little erratic and slight loss of power. Drained fuel from the filter again and water and fine sand was flushed out. Not good! After draining some fuel from the filter the car ran like new. My Defender runs very smoothly and has a very constant idle. If this changes, the first thing I check is the fuel filter and now drain a little fuel on a regular basis. All water and sand now gone. Don't drain too much at a time or you will stall the engine by creating an air lock in the fuel line. I found this out the hard way and it did not take much loss of fuel through draining to do this. It is a real pest getting the thing started again with air in the fuel line. Good Luck! |
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14th Jul 2011 1:10pm |
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| eutek Member Since: 03 Mar 2009 Location: High Wycombe Posts: 586 
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Thanks guys for the info.
I thought initially it might be the fuel when it happened in the past, but I've been back to the place I usually use and it just happened after about 1/2 a tank consumed. I'll dig up 22900013A's thread to see what he posted. |
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14th Jul 2011 2:11pm |
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| Apynala Member Since: 17 Oct 2009 Location: Morroco Posts: 88 
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Hello,
I had the same, once i've lost the water tank cap, some idles had occured. I've leveled cooling and it never happens again. If you have a T4 or faultmate, look at temperature of the engine when you drive. |
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14th Jul 2011 11:02pm |
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| rev it Member Since: 25 Jul 2011 Location: Kent Posts: 6 
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My 07 defender has very similar problem, occasionally it will not idle correctly when stopped at the traffic lights, with the revs moving up and down. I have also had the hesitiation and feeling it was about to stall. Then for next several days all is fine?
Had EGR valve changed several months ago, but still got this intermitant problem. Any ideas? |
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25th Jul 2011 8:48pm |
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| Alexke Member Since: 03 Jan 2011 Location: Antwerp Posts: 113 
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happened to me too : 4 new injectors replaced in warranty Discovery 4 SDV6 Landmark
F31 320dA Msport xDrive LR Defender 90SW TD4 Stornoway grey 320d E46 E70 X5 3.0d Sold! FFRR TD6 - Sold |
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26th Jul 2011 12:06pm |
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| eutek Member Since: 03 Mar 2009 Location: High Wycombe Posts: 586
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Thanks for the info guys... something else to keep an eye on.
It hasn't done it since, and does it quite rarely. Very strange indeed. |
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26th Jul 2011 1:10pm |
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| rev it Member Since: 25 Jul 2011 Location: Kent Posts: 6
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Hello, my 07 defender is still not idling correctly in morning,
 been told it may be fuel pressure relief valve or fuel metering valve, has anyone had either of these changed? |
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1st Aug 2011 12:34pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
I recently had the fuel pressure rail and metering valve replaced under warranty though that only came about after receiving dtc P1169. The only thing I can suggest is to monitor the fuel pressure at the rail to see what readings you get at idle and at known rpm's ie: 800rpm=? ,1000rpm=?, 2000rpm=? etc,etc. You will need some sort of monitoring tool like the nanocom, hawkeye or msv2 to accomplish this. However if you have a scangauge 2 you can enter a new code into x gauge and this will give you a new gauge for monitoring the fuel rail pressure. The original FPR gauge on scangauge is not compatible with the CANSF protocol but this code does work on CANSF vehicles: XGauge New Gauge: Fuel Pressure (if no FPR, Fuel Pressure at Rail). TXD: 07E00123. RXF: 044105230000. RXD: 2810 MTH: 000100570000. New gauge display name: FP. Measurement units: PSI. HTH Brian. |
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1st Aug 2011 12:54pm |
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| eutek Member Since: 03 Mar 2009 Location: High Wycombe Posts: 586
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Cool... thanks for the scangauge settings. I'll hook it myself as well and see if this issue applies to my motor. |
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1st Aug 2011 1:50pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
It could also be a sticking EGR valve, especially if it is stuck open as this will cause uneven running at idle almost is if it is starving for fuel, although it will be starving for O2 instead. If you have a scangauge 2 then there is an xgauge to monitor the EGR valve:
Xgauge New Gauge: EGR Duty Cycle TXD: 07E022113C RXF: 04628511063C RXD: 3010 MTH: 03E87FFF0000 New Gauge display name: EGR Measurement: Percent % |
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1st Aug 2011 2:38pm |
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| Landyrover Member Since: 04 Jul 2011 Location: Northampton Posts: 33
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I experienced this - hadn't started the 90 for a few days, turned it over this morning, fine for the first couple of seconds and then it started reving up and down all by itself - only stopped when I began to drive it. Ok after that.
Nick "You know, Marge, mud is nothing more than wet dirt!" (Homer Simpson) |
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2nd Sep 2011 2:54pm |
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| Landyrover Member Since: 04 Jul 2011 Location: Northampton Posts: 33
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Hmm, erratic idling apparent on starting from cold again today. Unlike yesterday when it surged up and down the revs, this time they kept dipping, almost to the point where I thought it would stall. This lasted about 10 seconds or so and then sorted itself out. It's booked into the dealers on Wednesday for a few other little problems to be looked at whilst it's still under warranty. I'll add this to the list.
Nick "You know, Marge, mud is nothing more than wet dirt!" (Homer Simpson) |
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3rd Sep 2011 5:35pm |
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