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Car Forum / UK Car Forums / 4x4 Cars (UK group) / September 2005Sluggish Nissano Terrano
Hi chaps I have a 5yr old Terrano II which has 90,000 miles on the clock. In the past year it has become increasingly sluggish in 5th,4th and recently 3rd. ie.. the gradual motorway gradients that it used to hold comfortably in 5th are now requiring a change down to 4th-and even that does not produce a surge.Indeed, 4th seems,in that situation, no better! Ist and 2nd are fine but I have detected in 2nd a feeling of slight shuddering, and whilst 3rd gets me up to 'speed' it is not brilliant and quite modest in output. I have not had issues with starting, and reasonably regularly put in fuel injector cleaners. My son-in-law suggests that the injector pump is not functioning correctly- and added that the injectors themselves may be clogged up. I have the vehicle booked in at my local garage at the end of next week and they are going to look at the issue. But I thought I would pop in to this newsgroup to see if anyone has experienced this. And whilst I am asking,my driver window steadfastly refuses to lower in hot weather and here the culprit seems to be the rubber surround-various people have suggested I should renew the surround. The other windows are fine Thanks Robin > Hi chaps > I have a 5yr old Terrano II which has 90,000 miles on the clock. [quoted text clipped - 20 lines] > > Thanks Robin Yep, your son-in-law might be correct. I'd try some injector cleaner first. If the motor has a distribution belt, it might be a tooth off position. Or some new spark plugs maybe. Have you tried some chaulk for the rubber? Frank >> Hi chaps >> I have a 5yr old Terrano II which has 90,000 miles on the clock. [quoted text clipped - 25 lines] > If the motor has a distribution belt, it might be a tooth off position. Or > some new spark plugs maybe. Although he is not specific, the OP mentions an injector pump so it is fairly safe to assume a diesel engine and since it is five years old it is probably the 2.7 indirect injection unit. This engine does not have a timing belt so it is safe to assume the timing has remained within specification. It is probable that there is either an air restriction of some kind or an exhaust restriction. This could be due to a component of the exhaust gas recirculation system being faulty. It will have a big throttle valve at the inlet manifold and another on the exhaust side with a steel pipe leading to the inlet side. In my experience the easiest and cheapest remedy is to remove and block the small capillary tubes which control all the valves in the system while checking that the exhaust valve is closed and inlet valve is open. It can operate like this to advantage on a permanent basis. The only disadvantage is a slight rise in NOx emission which is not tested for at MOT. The main advantage is a significant increase in engine life all other things being equal. OTOH it could be something else entirely. Let us know what you find. Huw >OTOH it could be something else entirely. Let us know what you find. > >Huw Huw-it turned out to need an new Air Flow meter, also known as an Air mass Meter I believe. The difference is amazing-I roared along a dual carriageway incline easily in 5th whereas I was struggling a bit in 4th! Thanks for your suggestions Robin >>OTOH it could be something else entirely. Let us know what you find. >> [quoted text clipped - 6 lines] > Thanks for your suggestions > Robin So it is a petrol engine then? It does help to give a little basic detail when asking a question if you expect a helpful answer. Nevertheless, thank you for the feedback. The main weak point on most electronic petrol injection engines is the air flow measuring device. Maybe one day someone will build a reliable meter. Huw >So it is a petrol engine then? It does help to give a little basic detail >when asking a question if you expect a helpful answer. Nevertheless, thank >you for the feedback. Sorry- yes I did forget to mention 'diesel', which it is. I was shown the offending item, which took 3 mins to re-fit. I could see a metal strip inside the cylindrical object - looked very innocent.The Nissan parts chap said to my local garage that he guessed it was that! The difference is staggering. However, whilst my issues have been sorted out my nieghbour's son's Fiat has not.I think I described the issues here- his Fiat dealer was told to fit a new turbo charger (at massive cost) which' might' sort the issue. He declined to follow this route.. Cheers Robin >>So it is a petrol engine then? It does help to give a little basic detail >>when asking a question if you expect a helpful answer. Nevertheless, thank [quoted text clipped - 5 lines] > parts chap said to my local garage that he guessed it was that! The > difference is staggering. Unless it is the 'new' 3.0 direct injection 158hp engine then to the best of my knowledge the 2.7 indirect injection engine just does not have an air flow meter. Basic details are essential. Is it a three litre? Huw >Unless it is the 'new' 3.0 direct injection 158hp engine then to the best of >my knowledge the 2.7 indirect injection engine just does not have an air >flow meter. Basic details are essential. Is it a three litre? > >Huw 2664cc. The new part was fitted just to the engine side of the air cleaner. Robin >>Unless it is the 'new' 3.0 direct injection 158hp engine then to the best >>of [quoted text clipped - 6 lines] > cleaner. > Robin The 2.7 is a mechanically controlled engine which has exhaust gas recirculation, a turbo and an intercooler. To my knowledge it does not have an air flow meter which is a sensing device used with computer controlled and electronically managed systems, principally in conjunction with electronically managed higher pressure fuel injection. The 3.0 now optionally fitted is of this type. There are a number of possibilities here. Either the engine changed to electronically controlled [fly by wire] at a late stage and I am not up with the latest mods, or you have the definition of what was changed mixed up in some way. It is also possible that you have been fed bullshit by someone to satisfy your curiosity. The symptoms you described are certainly consistent with an air flow meter failure, it is just that I do not believe such a device is fitted to the 2.7. Huw >>>Unless it is the 'new' 3.0 direct injection 158hp engine then to the best >>>of [quoted text clipped - 13 lines] >electronically managed higher pressure fuel injection. The 3.0 now >optionally fitted is of this type. From another ng, Huw: >All Terrano II's- that is from ~S reg onwards use fly by wire throttle and >EDC using a bosch VP pump.  SignatureR o o n e y "I always knew the entire Green party were nutters" - Ken Livingstone >>>>Unless it is the 'new' 3.0 direct injection 158hp engine then to the >>>>best [quoted text clipped - 19 lines] >>All Terrano II's- that is from ~S reg onwards use fly by wire throttle and >>EDC using a bosch VP pump. If this is true then it is extremely unusual for an indirect injection engine. Having said that, I have no other reason to doubt it because I have not examined one that 'young'. Huw > >>>>Unless it is the 'new' 3.0 direct injection 158hp engine then to the > >>>>best [quoted text clipped - 23 lines] > engine. Having said that, I have no other reason to doubt it because I have > not examined one that 'young'. Yes, but its not. All Teranno II's badged TDi's are exactly that- direct injection. And they are electronically managed. Tim.. >> >>>>Unless it is the 'new' 3.0 direct injection 158hp engine then to the >> >>>>best [quoted text clipped - 30 lines] > Yes, but its not. All Teranno II's badged TDi's are exactly that- direct > injection. And they are electronically managed. TDi in Nissan speak does not mean 'direct injection'. It means, if indeed it has a meaning, 'turbocharged diesel injection'. It is just creative marketing. The only direct injection engine fitted to the Nissan Terrano in the UK is the 3.0. The main difference between the early 100hp and the later 125hp unit is the fitting of an intercooler and a heavy duty gearbox, not a difference in fuel injection design. The 3.0 is essentially the same unit as that fitted to the Patrol which has a computer controlled version of the VP30 mechanical rotary injection pump, similar to that fitted to my six cylinder Land Cruiser and another engine I own. Huw > Yes, but its not. All Teranno II's badged TDi's are exactly that- direct > injection. And they are electronically managed. > > Tim.. Just for confirmation, from http://www.whatvan.co.uk/roadtest.asp?id=3967 The 3.0-litre isn't the only engine available. You can opt for a 125 bhp 2.7-litre indirect injection turbodiesel instead. Choose that power option and you can specify either SE or standard trim END. The 2.7 has never been produced or sold in the UK as a direct injection engine. Since you cannot get this basic fact correct you will forgive me if I doubt your second sentence. Huw > All Teranno II's badged TDi's are exactly that- direct injection. The D in TDi isn't always "Direct" - it's normally plain ol' "Diesel". I don't think many people would argue that TDi Terranos are normally diesels. > I don't think many people would argue that TDi Terranos are normally > diesels. I would..... |
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