Thread: TD5 surge at light throttle

This is a turbo diesel trait that I have noticed in other makes as well.

Was explained to me as the light throttle application creating a lower pressure area around turbo that allows the turbo to spool faster which equals more power in a shorter than usual time.

Hi, I have found this in my 2000 TD5 manual D2 as well. Although (fortunately) it does not happen too often, I have been crawling very slow down a track and the vehicle just accelerates very quickly, for 1/2 to 1 second. Far quicker than if I just floor the accelerator. Sometimes I wish I had that all that power when I want it, not when some gremlin decides to. If I have passengers, I am constantly saying 'that wasn't me!'
Maybe it is a glitch with a sudden glut of fuel injected, I don't know.
Could this be a recall? Toyotas are being recalled for un-intended acceleration. Land Rover, of course, will say 'sorry, out of warranty, not our problem'.

Originally Posted by cwebb

Hi, I have found this in my 2000 TD5 manual D2 as well. Although (fortunately) it does not happen too often, I have been crawling very slow down a track and the vehicle just accelerates very quickly, for 1/2 to 1 second. Far quicker than if I just floor the accelerator. Sometimes I wish I had that all that power when I want it, not when some gremlin decides to. If I have passengers, I am constantly saying 'that wasn't me!'
Maybe it is a glitch with a sudden glut of fuel injected, I don't know.
Could this be a recall? Toyotas are being recalled for un-intended acceleration. Land Rover, of course, will say 'sorry, out of warranty, not our problem'.

Is this at tickover and the rpm dropped low?

If it is then its the anti-stall fuelling to keep the idle revs correct.

And not a recall, to be a recall it must affect several and endanger life dramatically

Originally Posted by Tombie2

Is this at tickover and the rpm dropped low?

If it is then its the anti-stall fuelling to keep the idle revs correct.

And not a recall, to be a recall it must affect several and endanger life dramatically

Happens at 1K rpm and when the throttle is pushed slightly, released and then pushed lightly again.
With the secong push the surge happens.
It's a bit scary especially when driving over small rocks.
Mostly this happens en level ground or going down hill.
Never uphill.

Originally Posted by Tombie2

Is this at tickover and the rpm dropped low?

If it is then its the anti-stall fuelling to keep the idle revs correct.

And not a recall, to be a recall it must affect several and endanger life dramatically

Hi Tombie,
It has been, from memory, roughly from idle. Perhaps in low 1st I have accidentally let it go under idle speed. But why wouldn't this feature work when I have stalled it plenty of times in high 1st?

It certainly hasn't happened around 1K revs like Rudolf.

BTW Tombie, I sent you a PM yesterday re chipping my D2. I don't know if you check PM's that often. Cheers
Chris

be patient, he will contact you. and its worth the wait too