Master
I've just picked up a 98 tdi Discovery and am pretty new to the whole diesel thing - where are the spark plugs??? :?
Seriously though, at idle it kinda surges. The revs rise up and down about 100rpm and strangely I've noticed that one of the interior lights (on an aftermarket cruise control switch) also brightens and dims in time with the surging.
As the vehicle is under a statutory warranty i want to identify any issues now and get them sorted out before this runs out.
Not really sure where to start looking, whether its electrical or mechanical. I'm hoping not electrical coz i bought a tdi to stay as far away as possible from the prince of darkness.
TIA.
SysAdmin (Owner)
what rpm is it idling at?
it maybe that the battery is less than perfect and the revs are a little low on the idle and that makes the lights pulse.
is the tacho showing the variance or is it something you can hear as well?
the tacho is driven by the alternator so if the alternator is dodgy it tends to show up first by making the tacho wobble a little.
mine idles at about 800 rpm and i find that a little low when i have the air on so was thinking of taking it up to 900-950.
2007 Discovery 3 SE7 TDV6 2.7
2012 SZ Territory TX 2.7 TDCi
"Make the lie big, make it simple, keep saying it, and eventually they will believe it." -- a warning from Adolf Hitler
"If you don't have a sense of humour, you probably don't have any sense at all!" -- a wise observation by someone else
'If everyone colludes in believing that war is the norm, nobody will recognize the imperative of peace." -- Anne Deveson
“What you leave behind is not what is engraved in stone monuments, but what is woven into the lives of others.” - Pericles
"We can ignore reality, but we cannot ignore the consequences of ignoring reality.” – Ayn Rand
"The happiness of your life depends upon the quality of your thoughts." Marcus Aurelius
Master
Not exactly sure what its idling at, probably about 800rpm.
You can hear the pulsing and also see it in the tacho. The battery in it looks newish, but is only rated at 440CCA. I have a decent Exide sitting in the Rangie, i might swap them over and see if it makes a difference.
SysAdmin (Owner)
hmmmmm
have you emptied the sludge filter at the back of the vehicle?
or replaced the fuel filter under the bonnet ?
i remember this topic coming up before i think so it may pay to do a search of the site...
2007 Discovery 3 SE7 TDV6 2.7
2012 SZ Territory TX 2.7 TDCi
"Make the lie big, make it simple, keep saying it, and eventually they will believe it." -- a warning from Adolf Hitler
"If you don't have a sense of humour, you probably don't have any sense at all!" -- a wise observation by someone else
'If everyone colludes in believing that war is the norm, nobody will recognize the imperative of peace." -- Anne Deveson
“What you leave behind is not what is engraved in stone monuments, but what is woven into the lives of others.” - Pericles
"We can ignore reality, but we cannot ignore the consequences of ignoring reality.” – Ayn Rand
"The happiness of your life depends upon the quality of your thoughts." Marcus Aurelius
Master
I had thought of replacing the fuel filter, its something i was going to do anyway.
But what is this sludge filter that you talk of?
SysAdmin (Owner)
on the drivers side, on the inside between the chassis rails, just before the rear wheel, is a sludge filter with a tap in the bowl so you can drain it.
2007 Discovery 3 SE7 TDV6 2.7
2012 SZ Territory TX 2.7 TDCi
"Make the lie big, make it simple, keep saying it, and eventually they will believe it." -- a warning from Adolf Hitler
"If you don't have a sense of humour, you probably don't have any sense at all!" -- a wise observation by someone else
'If everyone colludes in believing that war is the norm, nobody will recognize the imperative of peace." -- Anne Deveson
“What you leave behind is not what is engraved in stone monuments, but what is woven into the lives of others.” - Pericles
"We can ignore reality, but we cannot ignore the consequences of ignoring reality.” – Ayn Rand
"The happiness of your life depends upon the quality of your thoughts." Marcus Aurelius
Master
Some 98's are fly by wire and have an ecu never worked one of this type so I'm not sure what it controls.
OldBushie
didnt fly by wire come out on the td5's?
or did the 4cyls get it too?
AT REST
If you are going to clean this filter, make sure you get a spare drain plug before you start. They are made of nylon? and swell it will probably break or strip trying to get it out. Easiest to drop the whole bottom section off and give it a proper clean.Originally posted by incisor
on the drivers side, on the inside between the chassis rails, just before the rear wheel, is a sludge filter with a tap in the bowl so you can drain it.
Bushie
1998 Defender
2008 Madigan
2010 Cape York
2012 Beadell, Bombs and other Blasts
2014 Centreing the Simpson
VKS-737 mob 7669
Master
Yep some of the last TDIs got fly by wire, a mate got one new at the run out sale when the TD5 came out.
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