VW 2,5TDI no power

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VW 2,5TDI no power

Post by andyiowo on Sat Jul 23, 2016 10:23 am

Hello , advise please just paid 22k for and 03 plate gatcombe and on first outing could only get 40 mph uphills no apparent turbo effect and with in 4 miles had to turn back due to rotational knocking noise ( suspect belt tensioner) , also it does not start first time with full glow plug duration and 26 deg ambient temp . also the brake pad warning light come on . very disappointed as only 24k 0n the clock . I have advise dealer who's  technician is on holiday until next week . sad to say cannot not use it in this shrugg lovely weather .
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Re: VW 2,5TDI no power

Post by -mojo- on Sat Jul 23, 2016 12:14 pm

I'd recommend that you have it looked at by a specialist with full VAG diagnostic facilities. It's possible to guess what it ~might~ be, but it's better to get the engine management system to tell you what it thinks the problem is!

There's a very good chance that it's just a sensor that has failed, but then again it's not uncommon on very low mileage vehicles for the turbo vanes to seize up, as they don't get moved through their full range of travel often enough. But that's just speculation - not something that will help you much at this stage.

The starting problem is ~probably~ not glow plug related - at those temps it should start OK with all the glow plugs disconnected, if everything else is in order. It's more likely to be a fuel delivery issue, I would think.
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Re: VW 2,5TDI no power

Post by daisy mae on Sat Jul 23, 2016 7:15 pm

Hope you get it sorted,

when I bought my VW 2,5tdi Anniversary Clubman, same as a Gatcombe, it had just over 9,000 on the clock, a few said I would have problems  as  low mileage, luckily I haven`t , so must be very disappointing to have a problem as soon as you have bought it. hopefully it is something simple, and you will be away in it soon.
Good luck,
Best regards,
Margaret
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Re: VW 2,5TDI no power

Post by mikejack on Sun Jul 24, 2016 8:29 pm

When i got my Medallion(2.5tdi) 28k miles it was hard to start used to chuck a load of un-burnt diesel out when it fired up. So i put it on vagcom and the pump timing was that far out it was off the timing gauge. It had new belts on it 4 yrs before i bought it at 20k miles so i put all new belts on and timed it up using vagcom no more poor starting now. 

Mike
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Re: VW 2,5TDI no power

Post by andyiowo on Mon Jul 25, 2016 12:47 pm

Hello , and thanks for all for the feed back , I suspect that the pump timing is out as I requested a new cambelt before purchase , shame dealer did not road test before hand over.
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Re: VW 2,5TDI no power

Post by Pamponi on Mon Jul 25, 2016 5:43 pm

The timing is fiddly to get right on these. Mine just had the cam belt done when I bought it & the timing was WAY off!
Also the wastgate was stuck so the turbo basically wasn't there.
Low mileage isn't always great. If it's just sat in barn most of the year things just stop working.
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Re: VW 2,5TDI no power

Post by andyiowo on Tue Jul 26, 2016 12:40 pm

Thanks for taking the time to post , this confirms my thoughts .
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Loss of power update

Post by andyiowo on Mon Aug 08, 2016 10:23 pm

Hello all . faults now fixed . the faults were power steering pump pulley left loose , diesel pump not timed after cambelt renewal and map sensor faulty . sadly people make mistakes . but some dealers lack care . thanks
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Re: VW 2,5TDI no power

Post by modelman on Tue Aug 09, 2016 8:19 am

A bit off topic, but I'm surprised that your van needed a new cam belt at only 24k, VW states that my Passat belt-change is at 140k, or was there another reason?

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cambelt change

Post by andyiowo on Tue Aug 09, 2016 12:59 pm

Hi , VW advise renewal every four years or 70,000 miles? on these units and I wanted dealer to do it as part of purchase 
price , thanks Andy .
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Re: VW 2,5TDI no power

Post by -mojo- on Tue Aug 09, 2016 1:04 pm

modelman wrote:or was there another reason?

Without wishing to answer for the OP, I would expect age to be the reason. With VW there seems to be a very noticeable mismatch between what the sales literature says when you buy a new van (goes for 20k miles without needing a service, etc, etc) and what the dealer's service department tells you, when their only interest in your van is how many service manhours they can foist on you.

IIRC on mine the vehicle literature said 6 years or 120k miles, but when you speak to a service department it can magically (for them) become 5 years or 60k miles.

Whatever, a 2003 van is probably due a cambelt change on age grounds by now!
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Re: VW 2,5TDI no power

Post by George.. on Tue Aug 09, 2016 5:15 pm

Hi had a very similar problem with lack of power. Had our 2000Gatcombe2.5TDI serviced and cambelt changed. Still no better, was advised to have tha Air Mas Meter changed. This did the trick, drives like a new van, hills and mountain passes no trouble. 35 mpg.
George
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Re: VW 2,5TDI no power

Post by donchiv on Tue Aug 16, 2016 12:33 pm

Take your van to a VW van centre, I have had the same troubles, it may be the timing is out this will cause the catalitic converter to become blocked.
VW have all the right equipment to check everything, after 4 years of low power my Gatcombe is like new thanks to Breeze VW van centre at Totton
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Re: VW 2,5TDI no power

Post by George.. on Tue Aug 16, 2016 1:33 pm

Hi, have to agree with above, I use the VW dealer car/van Robinson at Norwich.
George
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Re: VW 2,5TDI no power

Post by Happy Camper on Wed Aug 17, 2016 10:26 pm

We bought an Anniversary Clubman VW 2.5 TDI, '03 plate, in November last year, with approx 57K on the clock.   We had a similar problem with loss of power.  A local mechanic fitted a new catalytic converter and this resolved the problem.     allthumbz

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Re: VW 2,5TDI no power

Post by Pamponi on Sat Aug 20, 2016 8:32 am

Don't think mine has a cat?
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Re: VW 2,5TDI no power

Post by jt2011 on Sun Aug 21, 2016 11:02 am

I have had two vw t4's with blocked / damaged catalytic converters.

Both wouldn't go above 40mph. On both occasions I had the Cat removed and a straight piece of pipe put in its place. Still passed the MOT with no problems and it run much better.

I always go to a diesel specialist as they can diagnose problems better. Some garages start messing with engine timing/pump timing etc. and its not always that complicated.

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Re: VW 2,5TDI no power

Post by NORGIL on Sun Aug 21, 2016 11:55 am

jt2011, Interesting that you got your vehicle through the MOT without a cat. I had to have mine replaced on my T4 recently, I mentioned not having a cat and was told it was an automatic MOT failure. Maybe the age of the vehicle is what matters, mine is a 2001. Or have I been conned ?

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Re: VW 2,5TDI no power

Post by Pamponi on Sun Aug 21, 2016 1:01 pm

Had another look.
Mine has a Project Power stainless system with a dummy cat.
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Re: VW 2,5TDI no power

Post by -mojo- on Sun Aug 21, 2016 1:36 pm

NORGIL wrote:I mentioned not having a cat and was told it was an automatic MOT failure

You were advised correctly. You cannot remove an originally fitted emissions control device on any vehicle and then legally drive it on UK roads.

Plenty of people do it, and many get away with it, but that doesn't make it legal. Maybe someday they will tighten up the checks and those people (or the people that bought their vehicles secondhand) will have to fix the problem, but I doubt that will happen any time soon. MOT testers typically do not know where to look on every vehicle they see, and I suspect many just want an easy life with no arguments...
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Re: VW 2,5TDI no power

Post by richardstubbs on Mon Aug 22, 2016 11:35 am

The rules have changed recently. MoT testers now have to check for the existence of a catalytic converter and fail if not present. I think the computer system tells them what to check for. However,  they can't check the function of a diesel cat so if it looks standard then it will pass, even if it's got nothing inside it.

Same is true of a DPF, although this will all change in time when particulate testing equipment is introduced for light vehicles. It's currently being piloted for HGVs I think.

Moral: Don't remove the cat or DPF; it'll be expensive later. The vehicle should work perfectly with them fitted, if it doesn't then there's something else wrong and you're fixing the symptoms not the cause.

VW dealers (and specialists) can run a cleaning cycle just by plugging their diagnostic in which is much cheaper than replacement. I guess other makes are the same. We had it done on one of the works vans recently because it had dumped all its oil into the exhaust (turbo failure) and blocked the cat / DPF (combined on the late Caddy) completely. Fixed it.
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