kurgan

Active Member

• Nov 3, 2015

• #1

I'm still having this recurring issue where my D1 3.9 runs perfectly on petrol and most of the time on LPG. But while on LPG the revs are bouncing (hunting) when sitting in traffic (sometimes it drops really low sub 500rpm ) or when lifting off the accelerator at 30mph it bounces between 1000-1500 rpm
Any ideas it's really annoying.

 

Last edited: Nov 4, 2015

kurgan

Active Member

• Nov 4, 2015

• #2

I've taken a video of the problem (while still) - I'll take one while at 30mph (on private grounds)

http://vid958.photobucket.com/albums/ae64/MIL4722/MOV_0196_000_zpsx9kfsvg9.mp4

 

cooltide

sheep fancier

• Nov 4, 2015

• #3

Draw through or injected, when was the vapouriser last serviced?

 

kurgan

Active Member

• Nov 4, 2015

• #4

cooltide said:

Draw through or injected, when was the vapouriser last serviced?

Click to expand...

It's a tartarini sequential system. I don't know when the vapouriser was last looked at as I dont have anyone close by that knows LPG well.

 

cooltide

sheep fancier

• Nov 4, 2015

• #5

Worth finding out what vapouriser / reducer you have and buy a service kit anyway. I have no experience of injected gas, so best wait for the next post

 

cooltide

sheep fancier

• Nov 4, 2015

• #6

Though your vid would suggest it may be struggling on one cylinder

 

kurgan

Active Member

• Jan 10, 2016

• #7

Update......as of a few days ago....Thought it was fixed but alas no....

I'm still having this recurring issue where my D1 3.9 runs perfectly on petrol and most of the time on LPG. But while on LPG the revs are bouncing (hunting) when sitting idling in traffic (sometimes it drops really low sub 500rpm) and almost stalls. Sluggish when driving away from lights then picks up again....Then the 14 CUX check engine light comes on. I'm getting the following codes but they don't appear all of the time.

23 Fuel pressure low
44 NS Lambda Faulty
45 OS Lambda Faulty

Sometimes I get 36 Fuelling issue N/S

This doesn't happen on petrol just LPG.

Any ideas it's really annoying.

 

cooltide

sheep fancier

• Jan 11, 2016

• #8

Check your plugs / leads / dizzy cap. Adjust plug gap to 0.8mm. See if you can see any shorting out in the engine bay in the dark. What plugs is it using?

 

kurgan

Active Member

• Jan 11, 2016

• #9

All have just been replaced - NGK bpr6es - runs perfectly on petrol.