Nissan X-Trail Stalling Problem
I have a stalling problem with my X-Trail which I hope someone may be able to help. The local dealer cannot work out what is wrong.
It is a 2.5 SVE 2003 auto X-Trail.
It has had a LPG gas conversion, but the problem happens whether running under petrol or gas.
The car start OK in the morning OK but after 2-3 mins it cuts outs if you take your foot off the throttle. You loose the brakes and the steering is hard, so a bit risky. It can be a bit hard to restart. It only stalls in drive just after the temperature gauge is showing normal temperature and you take your foot of the throtle. It does not before this.
This may happen 2-3 times over the next 5mins if you take your foot of the throttle but after that it is fine.
The dealer has checked diagnostics and clean throttle butterfly and housing.
They have also replaced Airflow Meter but no help.
They have increased the idle up to maxmimum and although this has helped a very small amount, it still stalls when warming up.
The service dept in the Nissan Dealership are not being very helpful and would prefer that I go away.
They are telling me that because no fault comes up on the diagnostics they have no idea of the problem. I have suggested monitoring it as the car stalls which I can make happen every morning. They are telling me that because the engine warning light does not stay when the car is restarted there will be nothing to see. Is this true?
All the service manager could suggest is that I get rid of it, but how can I do this with the fault there, it would be dishonest.
The dealership is blaming the fact the car is converted to LPG even though they do not know what has caused the problem and whether it is related to the LPG conversion or not. They do not want to know!!
Any ideas apart from complain to the dealer principle.
Without a fault code it is hard to say what is causing the fault. I think the first to do is run the vehicle on standard fuel-not lpg to see if the fault still happens-this will rule out the lpg conversion. Then it would be a good idea to view the live data whilst driving and the fault happens.
It might also be worth trying another dealer if you have another one near to you. It could be a fault with the coolant temperature sensor or idle speed valve-but this is just a guessing-you need someone who can view and interpret live data.
Last edited by Sussex Patrol; 10-01-08 at 23:48.
LPG converted vehicles need to run one tank of petrol to 3 tanks of LPG otherwise the valve seats get burnt.
This presents itself as rough idle, stalling etc.
I would advise a cylinder leak test to see if you have leaking valves.
A proper check of power and grounds to your ECU should also be carried out.
It sounds to me as though you are losing a feed to your ECU when the engine is warming up.
Check the micro fuses in the engine compartment very carefully - look at engine control fuses especially.
There are many other possible reasons for this, ECT, MAF, MAP, Air leak, Evap solenoid etc etc.
Maybe you could look for an independant diagnostic specialist near you.
There was an item on BBC Watchdog a few months ago regarding a problem such as this with X Trails, I think. Try the BBC wesite and the Watchdog link.
Did you ever get a resolution to this problem?
I have a 2007 2.5 Auto Aventura with LPG conversion exhibiting exactly the same failure mode. It's in the workshop right now and has not shown up anything on the diagnostics and the guy has just cleaned the throttle body. We'll see if that helps later. Any new news on your experience would be appreciated.
Did you find out the what the problem was. I too have a 2.5 on LPG with the same problem. I have had it on a diagnostic machine,I have changed all 4 coil packs, had a compression check done(it was at the lower end of the scale on all 4 cylinders) it also has a very noticable miss fire(rough idle) which I think is a big part of the problem! My next step will be a pressure leak check of the cylinders as I now suspect the valve seats are burnt from LPG usage!!! I have noticed after trawling the internet that this problem only seems apparent on 2.5L x-trails that have had a LPG conversion???
Any advice would be greatly appreciated
After various tests it was finally stripped down to confirm that the valves had ineed burned out. Looks like this model just can't cope with LPG with the standard head. I had Flash-Lube fitted but maybe didn't pay enough attention to the drip rate? Either way it cost a-plenty to get the head re-worked to get hardened valve seats fitted. The Nissan garage sent the head away to get this done. When all was done it still wasn't running perfect but this was due to the fact that I needed to take to the LPG garage to have the system re-calibrated.
Thankfully it's running fine now; although my petrol gauge has just gone and stuck on empty!?
If you have this model I suggest going straight to the hardened valve seat solution. I spent a lot of time and money getting other tests done first to no avail.
Thank you Andy
I will be getting a leak down test done shortly but know I shall have to bite the bullet and fork out some money and get it stripped down eventualy! Very annoying!!
Last edited by jrothery1971; 03-12-10 at 19:23.
Just found this thread. I have a 2007 Nissan XTrail, which had been converted to LPG on first delivery. I am the second owner, and have had it for 18 months.
Have had similar problems to other folks on this forum. Vehicle is currently being trucked back to my local Garage from Canberra, where I commute to work part-time.
Was initially delighted that the X-Trail was on LPG (800 km./fortnight). However, in the past 3 weeks, it's started having all the problems listed on this forum, and apparently this happens with LPG conversions so they tell me. So, the head will come off, and probably new valves installed (apparently as previously on this forum, the LPG does damage).
Nobody ever mentions these problems when the conversion's done, only how good for the environment you're being, by running on LPG. Well, it might be good for the wider environment, but it's terrible for my financial sustainability and stress levels!
Will post how it turns out in a couple of weeks.
(non-RAC, but Oz RACV member)