New Ranger Sulphur Dioxide problem

Submitted: Friday, Mar 15, 2013 at 11:40
ThreadID: 101101 Views:2185 Replies:9 FollowUps:15
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Never having a diesel fitted with a catalytic convertor and egr unit I would like those in the know try and give me an answer to this.

Here is the problem that I think Ford may just place in the to hard basket, because they would have trouble duplicating it.

After driving on the highway for around 100k and sitting behind a slow vehicle for a while I accelerate hard to around 120+ kph to round them up. What happens then is we get a very strong smell of So2 in the cabin. This has occurred on every occasion these circumstances have been duplicated. It is like the sulphur is being stored somewhere and then burning off during acceleration.

I know it is common is petrol vehicles to have a crook cat so if someone has struck this problem before could give me a heads up I would appreciate it.

Thanks,
RA.
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Reply By: Member - ken m4 - Friday, Mar 15, 2013 at 13:04

Friday, Mar 15, 2013 at 13:04
RA have you done a search on the New Ranger.net forum. Don't know how to paste a link, but I was alerted to the site by someone on here weeks ago
AnswerID: 506830

Follow Up By: Member - ken m4 - Friday, Mar 15, 2013 at 13:06

Friday, Mar 15, 2013 at 13:06
Have not experienced that problem yet but will be aware. Ranger XL 3.2 auto
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FollowupID: 783955

Follow Up By: Rockape - Friday, Mar 15, 2013 at 13:39

Friday, Mar 15, 2013 at 13:39
Ken,
yep I will have a look at the Ranger forum and do a search. I don't believe it is a problem with other rangers just something funny with mine.

Thanks
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Reply By: John Davies - Friday, Mar 15, 2013 at 13:32

Friday, Mar 15, 2013 at 13:32
Does the vehicle have a DPF. If it does it might be burning off the soot in it which is what they are designed to do.

HTH

John D
AnswerID: 506832

Follow Up By: Rockape - Friday, Mar 15, 2013 at 13:37

Friday, Mar 15, 2013 at 13:37
John,
no it doesn't have a DPF just a cat and egr.

Thanks
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Follow Up By: garrycol - Friday, Mar 15, 2013 at 13:48

Friday, Mar 15, 2013 at 13:48
The egr will be closed on acceleration - it only feeds in exhaust gas on trailing throttle.

Garry
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FollowupID: 783959

Follow Up By: Rockape - Friday, Mar 15, 2013 at 15:43

Friday, Mar 15, 2013 at 15:43
Garry,
thanks. What has me stumped is I have never heard of this before with a diesel. Rang a fitter mate and it has him stumped also.
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FollowupID: 783962

Reply By: Ross M - Friday, Mar 15, 2013 at 15:47

Friday, Mar 15, 2013 at 15:47
RA
I would be looking for a head to manifold leak or at the turbo to engine pipe or even at the egr valve piping and body.
For you to be smelling it in the cab it has to be in that region somewhere and getting through the firewall grommets or may be getting sucked in from the plenum via the rear seal of the bonnet.
A white light LED torch and a good look might find it. Maybe a small piece of hose to the ear and listen with the other end at likely spots will locate the hiss.

You know dealers can't do that so they won't find it.

Ross M
AnswerID: 506836

Follow Up By: Rockape - Friday, Mar 15, 2013 at 16:00

Friday, Mar 15, 2013 at 16:00
Thanks Ross.

It is probably coming in through the a/c as it is not set on recirculate.

Have you ever struck this with a diesel before.

Cheers.
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FollowupID: 783963

Follow Up By: Ross M - Friday, Mar 15, 2013 at 20:18

Friday, Mar 15, 2013 at 20:18
RA
As you know all the A/C air comes from the plenum chamber so will get any overflow/leak from the engine bay.
I would still look at all the edges of exhaust components and see if there is a tell tale black emission. May be quite small as it only happens under full exhaust pressure apparently.

The white LED light will show things a normal torch won't. I would still do the listen thing with the hose to ear though. May be enough leak to hear it up the hose as you pass it.

I picked up leaking injector seals on a PK that way. They were a bit noisier than your would be.

Ross M
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Follow Up By: Rockape - Friday, Mar 15, 2013 at 20:59

Friday, Mar 15, 2013 at 20:59
Ross,
I had a good look around with an led torch and mirror and couldn't see any problems. That doesn't mean a leak is nt there as I can't get to everything.

The hearing side is out as after all these years my hearing is shot from industrial noise.

I will have another look tomorrow. I shot an email off to Ford this afternoon explaining what had transpired and explaining that I didn't think the dealer service department would be able to duplicate the problem, due to the fact they would have to take a couple of hours on the highway to catch it. The only other way would be on a dyno.

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FollowupID: 783985

Reply By: Member - Paul K - VIC - Friday, Mar 15, 2013 at 16:11

Friday, Mar 15, 2013 at 16:11
Hi Ra
May be it is from the vehicle in front of you and coming in to your car through the airconditioner

regards Paul
AnswerID: 506838

Follow Up By: Rockape - Friday, Mar 15, 2013 at 16:24

Friday, Mar 15, 2013 at 16:24
It happens even if I have been sitting behind a vehicle that doesn't smell but as soon as I give it some that is when it occurs.
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Reply By: Member - John - Friday, Mar 15, 2013 at 16:34

Friday, Mar 15, 2013 at 16:34
RA, with low sulphur diesel, doubt that it would be coming from the fuel, but have no idea where it is coming from.........sorry I am not more helpful.
John and Jan

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AnswerID: 506841

Follow Up By: Honky - Friday, Mar 15, 2013 at 16:41

Friday, Mar 15, 2013 at 16:41
Thats what I would assume.
I have a new Triton and the interesting thing about the smell of the exhaust is that it does not smell anything like diesel.
The smell reminds me more of a top fuel car without the burning eyes and coughing.

Honky
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Follow Up By: Rockape - Friday, Mar 15, 2013 at 16:47

Friday, Mar 15, 2013 at 16:47
Yep it has got me stumped
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Reply By: Mark - Friday, Mar 15, 2013 at 19:54

Friday, Mar 15, 2013 at 19:54
Maybe check the battery is not gassing and giving off hydrogen sulfide (rotten egg smell) Maybe check the voltage at high revs as it may be over charging and causing the battery to give off hydrogen sulfide. Also check the battery for bulging as it could be on its way out, unusual for a newish vehicle but it can happen.
AnswerID: 506851

Follow Up By: Member - Duncan W (WA) - Friday, Mar 15, 2013 at 21:00

Friday, Mar 15, 2013 at 21:00
You beat me too it Mark. I got this problem when my regulator was playing up and fried my Aux battery by over charging.
Dunc
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Follow Up By: Rockape - Saturday, Mar 16, 2013 at 17:39

Saturday, Mar 16, 2013 at 17:39
Nope, thanks anyway.
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Reply By: Rockape - Saturday, Mar 16, 2013 at 17:48

Saturday, Mar 16, 2013 at 17:48
For all those that tried to help, thank you.

I have had a think about it and I can see Ford won't be able to help because they won't have the time to work out why this is happening.

I have decided to hire a gas monitor after talking to them, then video what happens. If it happens on the video I have proof that something is wrong. This really has me beat as I have never, never heard of this before with any diesel. I have had my eyes and body stinging from the diesel underground but never smelt SO2 from the diesel.

RA.

AnswerID: 506916

Reply By: olcoolone - Saturday, Mar 16, 2013 at 18:21

Saturday, Mar 16, 2013 at 18:21
I think your problem may be from over fueling for a few seconds under load and the catalytic converter burning of unburnt fuel.

Why the smell is coming into the cabin could be caused by vacuum under the Ranger pulling air from the back of the Ranger to the front, remember you have cabin breather vents at the back of the cabin .... what may seem a non logical reason may the the most logical reason.

On modern vehicles you see this piece of plastic or what seems to be a deformed piece of rubber and you wounder why that is so....... it turns out to be engineered that way to alter that way to control noise, water, smell, dust or air in a specific area.

We haven't had this problem with our Ranger and we have done nearly 13,000k and a lot of over taking under load.

I doubt it very much it would be a leak in the exhaust or firewall.

Out of curiosity does it do it when the cabin air is on reticulated air when not under load....... reason I ask is years ago we had a new 100 series Landcruiser in our workshop from a dealer that had a smell similar to your..... we traced the fault to damp carpet from the AC where the recirculated air is picked up from, the smell was only there when on recirculated air........ I haven't noticed yet with the Ranger but modern vehicles do some strange things for NVH levels and one of the strategies may be to switch from fresh to recirculated air when under load to lower the amount of engine noise entering the cabin when under load.

One thing you may want to do is temporarily extend your exhaust pipe another 8-12 inches out the back and try it..... if it fixes it it means the the smell is from the exhaust and is getting sucked back into the cabin..... worth a try.


AnswerID: 506919

Follow Up By: Rockape - Sunday, Mar 17, 2013 at 06:05

Sunday, Mar 17, 2013 at 06:05
olcoolone,
I can understand how the smell is getting into the cab. What I am concerned about is why it is creating the gas as I have never had a diesel do this before.

As you say it maybe the cat burning of unburnt fuel but with the low sulphur diesel I don't know how it is happening.

Thanks for your answer and I will try extending the tailpipe. It would be a bad design fault if gas is being drawn back into the cab and maybe on Ford should have a look at.
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FollowupID: 784071

Follow Up By: olcoolone - Sunday, Mar 17, 2013 at 09:05

Sunday, Mar 17, 2013 at 09:05
Low sulphur diesel still has a far bit of sulphur in it to help lubricate and protect seals in the fuel pumps of older diesels unless you have upgraded seals.

Ultra low sulphur diesel is also available here overseas that's designed for 2006 on vehicles.

Only diesels with catalytic converters produce sulphur dioxide and it's only been in the last 2-3 years more diesels are having catalytic converters fitted.
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FollowupID: 784079

Reply By: Rockape - Wednesday, Mar 20, 2013 at 17:24

Wednesday, Mar 20, 2013 at 17:24
Just some more info on the problem I have.

I emailed Ford and they have rang me back, they are quite concerned about the problem. I find this quite refreshing, considering the amount of negative response you see about from vehicle manufactures and dealers.

The response was very good and they are going to have one of their tech guys look at it. I said, I would hire a gas detector and video the result and they were very happy with that as trying to duplicate the problem, would be hard due to the distance to get it to do it and the speed they would have to attain. In other words exceed the speed limit, as they can't do that.

For the knockers that say you shouldn't be over the speed limit. I say! I don't want to know about that, because most of the time when passing on the open road we all speed.
AnswerID: 507214

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