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Discussion Starter · #1 ·
Just after some advice....have recently purchased a T4 campervan (not a high top) - the very powerful 1.9TD 68bhp 800 special. Was going for this for fuel economy rather than speed...although the slow acceleration is driving me mad!! However, I am only getting about 30 mpg or less. Did a recent 240 mile round trip which cost me £45 in fuel! I don't go over 60mph as it sounds like the engine is working quite hard looking at the rev counter and I dont accelerate hard either so am wondering if there is something else going on....Overall engine sounds fine and seems to run OK. Mileage only 101,000 so not huge for a 10 year old van....

I had the fuel pump timing looked at just after purchase as it was not running right at all and wondered if this could have affected the amount of fuel the van is using....I have no before and after to compare against but from what I understand, and have read, these engines should be pretty economical....

Anyway....any advice would be most welcome!!
 

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Just after some advice....have recently purchased a T4 campervan (not a high top) - the very powerful 1.9TD 68bhp 800 special. Was going for this for fuel economy rather than speed...although the slow acceleration is driving me mad!! However, I am only getting about 30 mpg or less. Did a recent 240 mile round trip which cost me £45 in fuel! I don't go over 60mph as it sounds like the engine is working quite hard looking at the rev counter and I dont accelerate hard either so am wondering if there is something else going on....Overall engine sounds fine and seems to run OK. Mileage only 101,000 so not huge for a 10 year old van....

I had the fuel pump timing looked at just after purchase as it was not running right at all and wondered if this could have affected the amount of fuel the van is using....I have no before and after to compare against but from what I understand, and have read, these engines should be pretty economical....

Anyway....any advice would be most welcome!!
Hi we're the same bought the van last sept but only used it for long trips recently and its rubbish on fuel....i would say about 30 mpg at best. thought is was because of the town driving we were doing..we also take our time but it doesnt seem to make a difference how you drive it..oh yeh and its slow!!I:

gonna get it service in the next few weeks so i hope this helps. our old 2.5tdi was no where near is bad and i didnt drive that slow..

look forward to hearing if u get it sorted....
 

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Discussion Starter · #4 ·
Is it well serviced? Air filter ok? ect

Yep, had recent service with new water pump / timing belt change etc. Had a new air filter fitted aswell. May have to sell it and opt for the 2.5TDI!! More power and hopefully better fuel economy. I wandered if the adjustment to the timing on the fuel pump could have affected it....might have to do another Google search!!!:(
 

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Discussion Starter · #5 ·
Hi we're the same bought the van last sept but only used it for long trips recently and its rubbish on fuel....i would say about 30 mpg at best. thought is was because of the town driving we were doing..we also take our time but it doesnt seem to make a difference how you drive it..oh yeh and its slow!!I:

gonna get it service in the next few weeks so i hope this helps. our old 2.5tdi was no where near is bad and i didnt drive that slow..

look forward to hearing if u get it sorted....


Update: FYI, I contacted the VW diesel specialist who set up the fuel pump timing on my van, to query about fuel consumption. They were very informative and stated that things like:- roof bars, tyre pressure, state of air filter, terrain you are driving over, how you drive etc can all affect fuel consumption. As well as more serious things like engine wear, possibly wrong replacement gear box (dont know the history on my van) so that it is working at a higher engine rev and exhaust blockage. Have a feeling that none of the latter applies to my van. He did also go on to say that this particular engine, that we both have, was known to be a) slow and b) thirsty which is why VW replaced it.

Van is now advertised for sale!!!
 

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Update: FYI, I contacted the VW diesel specialist who set up the fuel pump timing on my van, to query about fuel consumption. They were very informative and stated that things like:- roof bars, tyre pressure, state of air filter, terrain you are driving over, how you drive etc can all affect fuel consumption. As well as more serious things like engine wear, possibly wrong replacement gear box (dont know the history on my van) so that it is working at a higher engine rev and exhaust blockage. Have a feeling that none of the latter applies to my van. He did also go on to say that this particular engine, that we both have, was known to be a) slow and b) thirsty which is why VW replaced it.

Van is now advertised for sale!!!
Switch to running on Tesco veg. oil and forget the poor fuel consumption! I've got the same motor as you running 100% veg. with 300ml 2-stroke per tankful - just needs the cold start pulled out to start in the morning for 30secs.. It will probably need 50/50 diesel/veg for winter running though.....
 

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The TD's normally benefit from increasing the fuel and boost a little, sounds a little mad but the extra low down torque means you wont be flogging the engine all the time, same applies to all diesels really.

I'd look at simple stuff like blanking the EGR and removing the cat (if it has one?) as well as the pump/boost tweeks you can find on places like VWdiesel.net. all easily done by a DIY-er
 

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my 1.9 td 800 specials the same, absolutely gutless and i thought, o, ok, at least its good on fuel but when you work out that it takes nearly £80 to fill the tank it sheds differnt light on things, iv blanked the egr and thats it, could it be that the decat pipe could be blocked??

its done 100,000 miles but i dont know how long the decat pipe is.

is there any way i could increase the power, it drives me mad.
 

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Hi Everyone.

Just to add a bit extra, I have a 2.4d and when I first got it 7 years ago it had 124000 miles on the clock and it was slow and thirsty. I would always fill the fuel tank just before the light came on and would only get about 400-440 (to about 70 litres) Now it has 230000 on the clock and it does about 500-550 on 70 liters. The van is also more lively and runs more smoother.

A few things I found makes a diffrence was fitting a decat exhaust, I think my old exhaust was falling apart for a long time. Also check the accelarater cable, as they stretch over time. Last year I started running my van on veg oil and I found this helps the van run a bit smoother. The other thing is to check all your filters ( air as already mentioned and oil filter) When my oil fillter needed changing I could feel the diffrence and real easy to change.

John.
 

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Did a snowboard trip to Scotland from Kidderminster last year. Took my 2.5tdi and my mates 1.9td. Both vans have similar interiors weight wise. and were carrying two people and both vans were at about 100000 miles. We both brimmed tanks at home then stopped to top 'em up at Perth, that's something like 325 miles from here, can't remember how much fuel we put in, but Sam's 1.9 took 53p less than my 2.5.
Now, I run a decat, egr blank and engine chip on mine and we drove at about 70 all the way ( almost entirely motorway). Sam's 1.9, at that stage was running completly un modded. At that kind of pace I always get about 35 mpg. At that point neither van had any roof bars on either.
 

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Same here, 25-30 mpg, no matter how gently its driven,

Top speed 75 flat out ,revving the balls off it (feels like it needs at least another gear)
Must be something I/we can do?
BTW, mines only covered 47,000 from new, runs like a swiss watch!
 

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i've got a 1.9 and mines rubbish on diesel but it's done 190000 miles, she's also parshal to a bit of oil... LOL:
i know mines down to engine wear but hay-ho.

i don't mean to be a noob but what's the EGR that everyone seems to have blanked? :*

Beau :ILU:
 

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Discussion Starter · #17 ·
The TD's normally benefit from increasing the fuel and boost a little, sounds a little mad but the extra low down torque means you wont be flogging the engine all the time, same applies to all diesels really.

I'd look at simple stuff like blanking the EGR and removing the cat (if it has one?) as well as the pump/boost tweeks you can find on places like VWdiesel.net. all easily done by a DIY-er
Hi there.,,just picking up on your reply last year...but late I know...have a bit of a PC aversion problem...I still have the same van and just left it as it was running, accepting the poorer fuel economy. However having a problem with my Cat...basically knackered. Is it OK to remove them completely and just rung exhaust straight through?? What does the CAT do and how would it affect the MOT. I am not a DIY van owner I am afraid...however, my mechanic seems to think I have to buy another cat but unless I can get a second hand one...also looking at your post it may be worth just removing it...

Cheers
Whilma
PS Will check my replies this time!!
 

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You can remove the cat and replace it with a straight through pipe, they`re readily available. MOT test on a diesel is for visible smoke only so removing the cat will cause you no issues whatsoever. Have a read up on blocking the ERG valve off too, its and easy job and also cleaning out the ERG will only improve things. Theres plenty of threads on how to do both on here.

T:
 

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Well, I blanked my EGR last year and I certainly notice a slight improvement in performance but no effect on MPG - still at 25-30 MPG whether driven at 50mph or 70mph! Might try the boost tweak next R:....
 

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Ive had mine 3 weeks got 49-000 miles on it and is drinking £50 for a measly 260 miles with no load inside it!! from what ive read looks like im stuck with a e engine :(! was looking at front mount intercooler and egr blanking plate but seems my efforts could be a waste of time and money after this read!!
 
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