V40: - Intermittent diesel throttle response loss 2001 V40

breezerabbit · Oct 13th, 2010, 10:58

Greetings all. I wondered whether anyone had experience of a V40 diesel (2001) which periodically won't throttle all the way up. The problem can happen from cold or driving on the motorway, and with foot flat to the floor, you can get approx 2200 revs only - sometimes a little more sometimes less. The fault state will continue for either a few seconds or a couple of minutes. If you are on the motorway, you can hold your foot right down and eventually the power will just come back. No fault codes are logged, and so far I have only exchanged the accelerator pedal units between my 2 V40s. This made no difference. I really would be grateful for your insight. Thanks a lot!

littlehomer · Oct 13th, 2010, 12:10

Hi there,

When I first picked up my 2001 Diesel V40 I had this.

I wrote a thread on here about it.

http://www.volvoforums.org.uk/showth...ght=loss+power

Lots of threads on this sort of issue if you search the forum.

I had it happen twice to me, I bought two bottles of Redex fuel additive and put them through the car (4 tanks of diesel) and touch wood, I've not had it in happen in about 5 months.

Many Thanks,

Daniel.

breezerabbit · Oct 13th, 2010, 20:57

Thanks Daniel - I will certainly give this a try. Your original post describes exactly what I have been experiencing. Sometimes it has gone for weeks without doing it - then it loses throttle to some degree every day. Today was a good day! It knows that I am on to it perhaps?

littlehomer · Oct 14th, 2010, 09:42

Hey up,

It's a weird problem.

I know my EGR valve is iffy, so I put it down to this.

But the Redex may help to de-coke some stuff without removal from the car.

Let me know how you go!

Many Thanks,

Daniel.

Oct 13th, 2010, 10:58	#1
breezerabbit New Member Last Online: Mar 1st, 2020 16:12 Join Date: Oct 2010 Location: York	Intermittent diesel throttle response loss 2001 V40 Greetings all. I wondered whether anyone had experience of a V40 diesel (2001) which periodically won't throttle all the way up. The problem can happen from cold or driving on the motorway, and with foot flat to the floor, you can get approx 2200 revs only - sometimes a little more sometimes less. The fault state will continue for either a few seconds or a couple of minutes. If you are on the motorway, you can hold your foot right down and eventually the power will just come back. No fault codes are logged, and so far I have only exchanged the accelerator pedal units between my 2 V40s. This made no difference. I really would be grateful for your insight. Thanks a lot!

Oct 13th, 2010, 20:57	#3
breezerabbit New Member Last Online: Mar 1st, 2020 16:12 Join Date: Oct 2010 Location: York	Redex Thanks Daniel - I will certainly give this a try. Your original post describes exactly what I have been experiencing. Sometimes it has gone for weeks without doing it - then it loses throttle to some degree every day. Today was a good day! It knows that I am on to it perhaps?

Oct 13th, 2010, 12:10	#2
littlehomer Master Member Last Online: Jul 15th, 2013 11:29 Join Date: Mar 2010 Location: Malvern View Photos By: littlehomer	Hi there, When I first picked up my 2001 Diesel V40 I had this. I wrote a thread on here about it. http://www.volvoforums.org.uk/showth...ght=loss+power Lots of threads on this sort of issue if you search the forum. I had it happen twice to me, I bought two bottles of Redex fuel additive and put them through the car (4 tanks of diesel) and touch wood, I've not had it in happen in about 5 months. Many Thanks, Daniel.

Oct 14th, 2010, 09:42	#4
littlehomer Master Member Last Online: Jul 15th, 2013 11:29 Join Date: Mar 2010 Location: Malvern View Photos By: littlehomer	Hey up, It's a weird problem. I know my EGR valve is iffy, so I put it down to this. But the Redex may help to de-coke some stuff without removal from the car. Let me know how you go! Many Thanks, Daniel.

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