No turbo boost in my TD5 Ideas???

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derwendolly

derwendolly

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TD5 (W reg) runs fine as long as I don't need to go up a hill! My No 2 mechanic has had it on a 'sofisticated' diagnostic machine and it shows that it is not boosting but is running fine when it does get up to normal running. Going up a hill is a case of using gear 5.. 4.. 3.. 2 and then I am up!! I just hope I don't get behind a horse and cart because I won't be able to overtake it.:(
I said 'change the turbo' as I can't be bothered with things that don't work and I am too old and clueless to be left stranded by the roadside but there is a marked reluctance on the part of BOTH mechanics to go down that road.
Number 1 mechanic has suggested he orders and fits an 'air pressure valve (??)' to see if that fixes it. He has also suggested that the Cat might be blocked up.
Any ideas or suggestions on how to proceed? He has done 218,000+ wonderful miles and I am very attached to him as he gets lots of MPG - for a D2. He had a new galvanised chassis bought for him 9 months ago and a brilliant new portable garage was brought by Santa!:)
I am NOT totally loopy - just clueless and prefer to spend rather than get stuck.
 
probably wastgate stuck, or needs a new boost modulator, and maybe find a mechanic who knows td5 as both are common niggles
 
I agree with Johnlad, the wastegate is easy to check and should have been done by your mechanic, or try a modulator. Whats the intercooler looking like ? It may have gone pop.
 
johnlad said:
probably wastgate stuck, or needs a new boost modulator, and maybe find a mechanic who knows td5 as both are common niggles
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Both mechanics are very experienced in landys, especially td5's, even own them! One of them is a well-known off-road vehicle builder/user who is very well versed in these engines! But, I will certainly chat about the suggestions being offered here. Unfortunately, I did not understand all the changing figures which continued to appear on his machine as we continued on the test drive!:confused:
I do believe that Euphobie's wate gate thing was changed about a year ago although, without getting his 'medical racords' out, I cannot be certain that I have remembered that correctly.
 
steventoon said:
I agree with Johnlad, the wastegate is easy to check and should have been done by your mechanic, or try a modulator. Whats the intercooler looking like ? It may have gone pop.
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I haven't a clue about what an intercooler is but I will certainly ask him to check it. Are there any obvious other symtons that might be produced if it has gone pop?? I have a better chance of reporting 'things' that might be relevant if I know what I might be expected!

There are only two things that I can say I have noticed but have ignored and they are
1. The heater cuts out, even to the point of being cool, the faster I travel over a prolonged period of time. And
2. When driving out, in reverse, of his new garage, there is a sharp 'jab' as if something is being 'freed off' with the movement. It ha only just started doing this - last three times I've been out.

I hope this convinces you of my cluelessness!

Thanks to you for your suggestions though, and I will ask my mechanic next week when he returns to full work.
 
+1 i'm with ratty, i just want to add some ideas... clogged/stuck EGR (if still fitted)...if you have access to diagnostics check live data on teh AAP sensor too...cos if this one is shot it mixes up the whole boost management

by the way, check fuse F2 in engine bay fusebox cos this is on the MAF, EGR and wastegate modulator
 
sierrafery said:
+1 i'm with ratty, i just want to add some ideas... clogged/stuck EGR (if still fitted)...if you have access to diagnostics check live data on teh AAP sensor too...cos if this one is shot it mixes up the whole boost management

by the way, check fuse F2 in engine bay fusebox cos this is on the MAF, EGR and wastegate modulator
Click to expand...

I will ask for all this to be checked next week but, in the meanwhile, I do believe that I might manage to check the fuse.:) I do now know where that is!
The diagnostic machine was a large flat box with a screen about a foot square. I know it is a 'pro' one as mechanic 2 is totally dedicated to the green oval - he is an off-road vehicle specialist and has his own vehicle built on the D2 base, although it is certainly not recognisable to me as such! I was holding the machine as he drove etc. and he was explaining what it all meant. The only unacceptable reading came from the turbo which registered exactly what I had described, ie. there was no boost coming in but the turbo performed perfectly once I was going along and not asking for umph!
 
that lack of boost reading can be due to the AAP(ambient air pressure) sensor(in the airbox) or MAP sensor, so these sensors must be checked
 
ratty said:
If it's accelerating ok on the flat, It sounds like you may wish to start by cleaning yer MAP sensor.
Click to expand...

Unfortunately, I am in bed now and do not have all the vehicle records with me but, I do know that the first thing mechanic no.1 did was de-gunge 'something' - I will look tomorrow to see what that was. It did improve things but the fact remains that I still do not get the power I used to get. It was at this point no.1 recommended I went to no.2 as he had the pro. machine.
 
Do mechanics 1 and 2 work at the same shop? From what you have said it sounds like both of these fellas have a good idea what they are on about. IMHO you should choose 1 mechanic ( probably the guy with the diagnostics due to the nature of fault finding on these beasts) and give him the time to investigate the fault and no doubt he will get it in the end, hopefully in a way that end a in a lesser bill for you. The turbo was a prime example, they may have changed it at great expense for the part and achieved nothing then eventually find it is down to the wastegate solenoid ( which he may be talking about when he says air pressure valve as some wastegates do control on pressure as opposed to vacuum)or a burst pipe or something stupid and cheap like that. There is a wealth of knowledge on here as you can already see from the posts above, which is fantastic for all us diy ers who want to draw onthe benefit 8f experience and save on the garage labour costs, but I would let your mechanic work through things in a systematic manner rather than telling him what to do.......until he says he gives up and cant fix it......
 
sierrafery said:
that lack of boost reading can be due to the AAP(ambient air pressure) sensor(in the airbox) or MAP sensor, so these sensors must be checked
Click to expand...

If I recall properly, it was something about an air pressure sensor that he mentioned today. He is going to get one on order and give me a ring as soon as he has got it.
 
musky81 said:
Do mechanics 1 and 2 work at the same shop? From what you have said it sounds like both of these fellas have a good idea what they are on about. IMHO you should choose 1 mechanic ( probably the guy with the diagnostics due to the nature of fault finding on these beasts) and give him the time to investigate the fault and no doubt he will get it in the end, hopefully in a way that end a in a lesser bill for you. The turbo was a prime example, they may have changed it at great expense for the part and achieved nothing then eventually find it is down to the wastegate solenoid ( which he may be talking about when he says air pressure valve as some wastegates do control on pressure as opposed to vacuum)or a burst pipe or something stupid and cheap like that. There is a wealth of knowledge on here as you can already see from the posts above, which is fantastic for all us diy ers who want to draw onthe benefit 8f experience and save on the garage labour costs, but I would let your mechanic work through things in a systematic manner rather than telling him what to do.......until he says he gives up and cant fix it......
Click to expand...

No, they are both independent places. Fortunately, when you live in the middle of nowhere, these people do tend to recommend each other as and when necessary. My one huge problem I have about leaving my disco with no2 is that he is so busy I have to be without transport for too long a time. I have no means of getting anything from shops, Docs, vet etc. etc. without a vehicle - public transport is non existent! We only have 1 car and my husband does not drive! I might be able to walk the 3 miles down the hill to get to a shop but there is certainly no way I could walk back - with or without the shopping! To leave my car with him I need to get a taxi back home as it is a journey of about 40 miles and the same to go collect it - very, very costly. And just to add insult to injury, the car hire companies have an upper age limit which I exceed!! And they are 50 miles in the opposite direction anyway!!!!!! Sometimes life just seems to conspire against you! I am seriously thinking that buying a small cheap runabout to last a couple of weeks although the insurance on that is bound to be considerably more than the £200 I pay for the Disco!!
I am certainly in agreement with what you say though.
 
derwendolly said:
No, they are both independent places. Fortunately, when you live in the middle of nowhere, these people do tend to recommend each other as and when necessary. My one huge problem I have about leaving my disco with no2 is that he is so busy I have to be without transport for too long a time. I have no means of getting anything from shops, Docs, vet etc. etc. without a vehicle - public transport is non existent! We only have 1 car and my husband does not drive! I might be able to walk the 3 miles down the hill to get to a shop but there is certainly no way I could walk back - with or without the shopping! To leave my car with him I need to get a taxi back home as it is a journey of about 40 miles and the same to go collect it - very, very costly. And just to add insult to injury, the car hire companies have an upper age limit which I exceed!! And they are 50 miles in the opposite direction anyway!!!!!! Sometimes life just seems to conspire against you! I am seriously thinking that buying a small cheap runabout to last a couple of weeks although the insurance on that is bound to be considerably more than the £200 I pay for the Disco!!
I am certainly in agreement with what you say though.
Click to expand...


can you or your husband use a spanner?

If so why not give cleaning the MAP sensor a go yourselves?

http://www.landyzone.co.uk/lz/f67/removing-cleaning-td5-map-sensor-198286.html
 
ratty said:
can you or your husband use a spanner?

If so why not give cleaning the MAP sensor a go yourselves?

http://www.landyzone.co.uk/lz/f67/removing-cleaning-td5-map-sensor-198286.html
Click to expand...

I don't let my husband near anything practical - absolutely clueless and very, very 'kifty'!! But I would have a go. I am the DIYer in this house!

BUT, having looked at Euphorbi's paperwork this morning, I find that on the 5th Dec. the following was done:- 'Clean Manifold Pressure Sensor'. I know that No1 found this to be very gunged up. Is this the item in your wonderful pictorial guide?? If not, I'll have a go at doing it as soon as I can get some of the cleaner stuff, either by post or 60 mile round trip to local shopping! The joys of rural living, but the scenary is beautiful and, for greenlaners, a paradise. Pity I'm too ancient although just riding around is pleasant enough.:)
 
derwendolly said:
I don't let my husband near anything practical - absolutely clueless and very, very 'kifty'!! But I would have a go. I am the DIYer in this house!

BUT, having looked at Euphorbi's paperwork this morning, I find that on the 5th Dec. the following was done:- 'Clean Manifold Pressure Sensor'. I know that No1 found this to be very gunged up. Is this the item in your wonderful pictorial guide?? If not, I'll have a go at doing it as soon as I can get some of the cleaner stuff, either by post or 60 mile round trip to local shopping! The joys of rural living, but the scenary is beautiful and, for greenlaners, a paradise. Pity I'm too ancient although just riding around is pleasant enough.:)
Click to expand...

It certainly sounds like the one they have already cleaned.:(

Something else you can try is to unplug the Mass air flow meter.
 

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Wow things certainly are conspiring against you derwendolly. Sorry to hear its not as easy as might be for some, youve certainly opened my eyes a bit, as my initial comment was based on you saying you werent so confident with working on cars but I never realised you had so far to go to a garage. Sounds like the td5 is the ideal vehicle for you in the area you live but its a pain that once these things play up it can take a bit of time and trial and error to fix. Ive gone through that with mine and then had over 2 years trouble free. The hire car company age restriction is a bit of a joke. The idea of a cheap runabout could be the way forward, I would have hoped the insurance would be much cheaper than for your disco. If you feel confident in doing some of the tasks which have been well written up, such as what ratty suggested then could be worth trying these before committing yourself to the garage again. Im sure youl get all the help you need on here. At least its is still running so hopefully in taking things one step at a time youl get it sorted soon.
 
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