sluggish when cold
 

hi all.. 2003 V70 D5 163 ......when i first run the car, it it totally gutless until the turbo comes in then its off like the clappers... its like i put it into gear and if i pull away gently, it drives as normal, but if i floor it... its a good 3ish seconds of building up revs till the turbo kicks in at about 2500 then whoosh...

its only when cold but it did it today 10/10/2018 and its 23'c outside.

could it be that the glowplugs are not working?

once the engines warn, it runs as normal

TIA..
Al.

..... and your car is.....

sorry pal.... 2003 V70 D5 160

Hi it sounds like the VNT is not working as it should,
Dave

Agreed.
Some repeated gentle and progressive acceleration from around 1500 rpm in 3rd and 4th gear to around 4000 rpm on a warm engine should start to free it up.

If limp mode is triggered, pull over, restart the engine and keep trying.

turbo was replaced about 3 months ago and it was stripped and cleaned before it was fitted..

could it clog up in such a short time?

and deffo no limp mode.


if it is stiff, would putting the hand held vacuum pump on it and actuating it a few times do the same job si?

It should comfortably move when manipulated with a vacuum tester as seen in my video.

il vacuum test it.

would a old, clogged diesel filter cause the same problem si ?

For such a noticeable performance issue, if the fuel filter was the problem, I'd expect extended cranking on start up and fuel pressure codes (high and/or low) to be thrown.
If you can't 100% vouch for the filter though, it's a cheap thing to eliminate and never a bad thing to renew.

What your problem definitely isn't though is glow plugs but with winter coming, you do want them functioning.

just tested the plug and two are oc and the other three are 0.5-0.6ohm