SHELBEE Posted June 21, 2012 Share Posted June 21, 2012 hope you can help we have a 2.5 autosleeper exec. r reg 1997 peugeot boxer, with a turbo fitted later, we have had the van 6 months, the problem is its not very fast, it will only go 55-60 max on the motorway, how do i find out if the Turbo is working, or is this speed as good as it gets? we have not got much mechanical knowledge, can anyone help Link to comment Share on other sites More sharing options...
Caddies104 Posted June 21, 2012 Share Posted June 21, 2012 Welcome I would suggest taking it in to a local garage that has engine Mapping( think that's what it is called) and check all is ok, maybe something like a fuel blockage or something like that but putting it onto a computer should I would think sort it out. Wait for the mechanics on this forum to reply... Good luck Link to comment Share on other sites More sharing options...
Robinhood Posted June 21, 2012 Share Posted June 21, 2012 ....not an easy problem to diagnose at a distance, but no, such performance wouldn't be considered normal for such an engine if in good condition. FWIW, a common problem on the factory original turbo equipped engine was the turbo to intercooler hose becoming detached under pressure. I had this happen on a much newer 'van than this, and the drop in performance was dramatic. My son commented on the changed pitch of the turbo "whistle" and I mentally diagnosed it, and as the retaining jubilee clip was still on the hose, managed to fix it there and then. If everything looks to be attached, and no sign of any issues, a visit to an independent diesel specialist might be in order. (Any idea who fitted the turbo conversion?) Link to comment Share on other sites More sharing options...
Guest Tracker Posted June 21, 2012 Share Posted June 21, 2012 If you have a motorhome dealer near you perhaps you could ask one of their staff who should be familiar with your van's performance to drive it and advise, or they might even let you drive one of theirs, if they have one, to compare? These 2.5 diesels were a very tough but basic commercial diesel engine known for longevity rather than refinement or power and as your van did not originally have a turbo it may be geared to the lower power and torque of a non turbo van which would limit top speed? Link to comment Share on other sites More sharing options...
euroserv Posted June 21, 2012 Share Posted June 21, 2012 Hello, The fuel pump that supplies the fuel to the injectors is probably unable to supply enough for you to make the most of the turbo. This could be purely a matter of capacity, but just as likely is that the fuel pump is worn. This is very common on un-modified vehicles too. The answer is most likely to be the fitment of an electric fuel pump between the supply pipes from the tank and the mechanical fuel pump. This will overcome the lack of 'suck' that the old pump can provide and at the same time make greater volume available. Older (non turbo) versions had no electrical fuel pump because the mechanical pump could 'lift' enough fuel but the turbo vans had an electric pump built into the fuel tank sender unit that propelled the fuel forwards at much higher pressure. It would always have been a big ask to expect a mechanical pump to be able to provide enough fuel for a turbocharged system but as it wears this will become impossible. I suggest you take it to a diesel specialist and seek their advice. They may try to sell you a new mechanical pump, or a refurb job for yours but they would have to agree that the ultimate solution would be an electrical pump. A combination of both may be required. Regards, Nick Link to comment Share on other sites More sharing options...
Brian Kirby Posted June 21, 2012 Share Posted June 21, 2012 Robinhood - 2012-06-21 11:08 AM...............I had this happen on a much newer 'van than this, and the drop in performance was dramatic. My son commented on the changed pitch of the turbo "whistle" and I mentally diagnosed it, and as the retaining jubilee clip was still on the hose, managed to fix it there and then. ................ Wouldn't have been your Transit, by any chance? Link to comment Share on other sites More sharing options...
Robinhood Posted June 21, 2012 Share Posted June 21, 2012 Brian Kirby - 2012-06-21 4:28 PM Robinhood - 2012-06-21 11:08 AM...............I had this happen on a much newer 'van than this, and the drop in performance was dramatic. My son commented on the changed pitch of the turbo "whistle" and I mentally diagnosed it, and as the retaining jubilee clip was still on the hose, managed to fix it there and then. ................ Wouldn't have been your Transit, by any chance? ...no, it was the Rapido (2005 2.8JTD Ducato). It "blew" just as I was taking the slip road to the A64 at Tadcaster. The change in performance was like a 100mph head wind. :-S It was an interesting job fixing it in a narrow layby on the dual carriageway, but as I said, the clip was still on the hose, so I was lucky. (It was easy to hear that it had gone, but not at all easy to see or get tools on!) As for the Transit, it had a (the) recall on for the intercooler hose before I bought it (and before it was registered 8-) ) . I'd checked the VIN number on Etis before buying, and it had pulled up the the "campaign" message, so I was ready for it. Given that I knew about it, I waited until the Ford recall documentation caught up through the registration process, and booked it in then. (It was at the same session I got the dealer to reprogram the radio so the fader worked front to rear. They knew nothing about it, but the fact that they (camper bases) all come set up for two speakers from the factory was detailed in the BEMM manual, with a note that, if the converter fits rear speakers the radio can be reprogrammed to make the fader work properly. I showed them the page from the BEMM, and when I picked it up, it had a note on the worksheet "radio fader now working" with a big "smiley" next to it - didn't charge me either!) Link to comment Share on other sites More sharing options...
SHELBEE Posted June 23, 2012 Author Share Posted June 23, 2012 Thanks for the help, will try and find a decent engineer, if your from sherwood forest, your not far from us, do you know any engineers you could recommend? thanks again Link to comment Share on other sites More sharing options...
thebishbus Posted June 23, 2012 Share Posted June 23, 2012 Hi One way of checking if the turbo is doing anything, is to squeeze the turbo rubber outlet hose with your hand, whilst revving the engine. If the turbo is working you should feel the pressure building up in the hose. Brian B. Link to comment Share on other sites More sharing options...
Coachman Posted June 23, 2012 Share Posted June 23, 2012 Many years ago we had a Hymer 544 with the 2.5 engine with turbo. I thought it ran good until I took it to the firm TB TURBOS who do not trade now, anyway it was in for service and the guy done a road roller test, if thats the word for it and he found we were missing quite a few bhp. With a screwdriver he delved into the engine and we actually saw the dial go up to the maximum for that engine, note no chipping etc. Well when we left there I could not believe the differance.I believe that one of the staff there opened up his own busines later. Link to comment Share on other sites More sharing options...
Robinhood Posted June 24, 2012 Share Posted June 24, 2012 SHELBEE - 2012-06-23 10:00 AM Thanks for the help, will try and find a decent engineer, if your from sherwood forest, your not far from us, do you know any engineers you could recommend? thanks again Sorry, I've never had the need to have any of my 'vans checked over. Whilst personal recommendation is obviously the best way to go, Google will usually pull you up a few options. Google "Diesel Specialist town" ....out of the resulting entries, I would be inclined to then choose one where it is the main part of the business and not a sideline. As an example only, the following is one I found (but I have no personal experience of): http://www.patkins.co.uk/ If contacting any specialist, it would pay to describe the issue in advance, and discuss the potential costs of diagnosing, as business practices for charging vary tremendously. Link to comment Share on other sites More sharing options...
euroserv Posted June 25, 2012 Share Posted June 25, 2012 Hello, We use TT Automotive Ltd at Loughborough, and that is not too far from you I suspect. They are an accredited Bosch Injection Centre and while anything to do with fuel pumps is often pricey, they have proven to be competitive. The best thing to do is to get the problem diagnosed by them and then if you need parts; call someone like Euro Car Parts for a better price if possible. If the problem was a turbo pipe you would be emitting clouds of black smoke. Nick Link to comment Share on other sites More sharing options...
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