Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10297
throttle not responding
Chaps
I've now had this situation 5 fives, but extremely intermmitant. First two were, cruising at approx 65mph, on a light throttle, put foot down to increase speed, no response! Foot on and off the gas a few times, and away she went. OK then for a couple of weeks, then the same again, just once, then another gap of a week, and the same again. Then, yesterday, I was pulling away from some traffic lights, pulled OK in first, changed up to second, off the clutch, on the gas and nothing! Dropped the clutch so that it wouldn't stall, again pushed the gas pedal a few times until it revved clean again, and away we went. No smoke, so it doesn't look like fuel getting in but not burning, just the throttle action not "being responded to" (if that makes sense)
ideas?
thanks
AlVolvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
Had this on the D2, would pull up to traffic lights, where I came to pull away, foot on throttle, nowt.??
in my case I had to switch off and back on again.
sealer changed the throttle sensor
"I know that you believe that you understood what you think I said, but I am not sure you realize that what you read is not what I meant"
30th Dec 2007 11:39 am
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
sounds like either fuel rail temp. sensor or an air leak on the induction ductwork
30th Dec 2007 1:59 pm
espri
Member Since: 07 Nov 2005
Location: Tyrol, Austria
Posts: 387
The effect you describe sounds just like the problems I'm having (loss of power) but in my case it seems mostly to happen just on starting or in the few moments thereafter (occasionally acceleration has been sluggish too). That's discussed in the thread on TDV6 Glowplugs ([url] http://www.disco3.co.uk/forum/topic16749.html [/url]).
30th Dec 2007 9:47 pm
Fatboy Slim
Member Since: 16 Dec 2007
Location: Bridgend
Posts: 197
Bit of a long shot, but I get this problem on a regular basis with transit vans. Could it be the throttle potentiometer on the pedal?????
30th Dec 2007 11:36 pm
al cope
Member Since: 08 Nov 2005
Location: Oldbury, WM
Posts: 10297
wasnt that 'cause the Tranny and D2 used the same throttle module?
happened again tonight, much worse this time, call to the stealers tommorrow.
AlanVolvo XC90 B5 Plus Dark
Gone - MY18 D5 HSE - Corris on 22's with Black Pack
Now gone - MY16 D4 SE Tech, Loire Blue, Almond Leather, Privacy, plus some other goodies.
Old - MY12 D4 SDV6 XS Auto - Ipanema Sand with Almond Leather - Plus other niceties, and D4.com sticker
Older - D3 TDV6 XS Auto - Lugano Teal with Almond Leather, 20" Stormers, Shiny Tailpipes, DVD/TV - and obligatory D3 sticker
Ancient - D3 TDV6 S - Tonga with Ebony, 20" Stormers, satnav & DVD
Member Since: 07 Nov 2005
Location: Tyrol, Austria
Posts: 387
My loss of power has been put down to a sticking "exhaust feedback valve" (more details in the TDV6 Glowplugs thread linked above).
What is an "EGR valve", Hobbs? Is that the same thing?
5th Jan 2008 12:10 am
DN D3 Decade
Member Since: 24 Jun 2006
Location: W.London.
Posts: 2294
EGR = Exhaust Gas Recirculation valve. Probably is the same valve as your problem espri(there are 2 of them on the TDV6), if it, or they, stick open, or open when they shouldn't, the turbo boost pressure is dumped into the exhaust, giving a drastic loss of power.( I know ,because I had a Freelander TD4 that did this to me many times whilst pulling out on to main roads, I was just lucky a juggernaut wasn't bearing down on me when it chugged away at a snails pace into fast moving traffic. )
5th Jan 2008 12:21 am
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
Slightly different to a TD4 as the Disco3 has a variable vane turbo (therefore no wastegate), a sticking EGR would mean that exhaust gases are sent back into the inlet manifold in unregulated quantities, thereby starving the engine of fresh air
5th Jan 2008 12:41 am
espri
Member Since: 07 Nov 2005
Location: Tyrol, Austria
Posts: 387
Many thanks for the explanations - sounds like what I had.
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