|
|
Post by melga on Mar 12, 2005 16:05:44 GMT 11
Hi Everyone
Just bought a 95 MU 3.1 TD . I am new to this, both to the club and to 4wdriving so please be patient. This is the problem... when i go through the gears specially 3rd 4rd and 5th after 3000 revs she is very slow to reach 4000 rvs and cant never no matter the gear i am go into red zone, plus cant hear or feel the tipical turbo pull... The oil pressure seems ok so what do you think i have here? she doesnt smoke and has done 171K ... any ideias ? Turbo broken ?
thanks for any interest
|
|
|
|
Post by geeves on Mar 12, 2005 17:57:22 GMT 11
If your getting 3000 in 5th then theres very littly wrong with the turb Thats around 120kph. First replace air filter then check the exhaust for blockages. My 2.8 was reluctant to redline before putting a 2.5 inch exhaust on It now pulls all the way to the rev limiter When they took the original exhaust off they found it was full of mud (it took 2 of them to get it into the skip).
If these seem ok then its worth getting the boost presure and injectors +pump checked.
|
|
|
|
Post by Graham on Mar 12, 2005 23:49:04 GMT 11
My 3.1 is a bit of a dog over 3,000rpm. Our engines are a turbo diesel with torque and likes to pull at 2,000rpm more than rev at 3+ I would think. I don't really know because i'm lumped with an auto.  It's much more managable off-road, but annoying on-road. Graham. |
|
|
|
Post by melga on Mar 13, 2005 8:28:18 GMT 11
Thank you Geeves and Graham
I am picking it up tomorrow so that will be the 1st thing i am going to check....air filter and follow your advice in the order suggested... You just took a big concern out of my mind... Yeah she reachs 150 Km/h but slow to get there on the road test i gave her. I just wanted to eliminate the turbo malfunction because that is a lot of money to replace... thank you all... I will keep you posted on the future development... have a great weekend
|
|
|
|
Post by Graham on Mar 13, 2005 22:57:43 GMT 11
Cool, hope you enjoy your new toy & keep us posted.
I paid more attention to my car today and it actually pulls quite strongly to 3,500rpm but that's typically the rpm point that the auto box shifts up, even if you are heavy on the accelerator.
I'd still prefer to hold it in a higher gear manually rather than rev the engine so high, but there you go.
Ciao, Graham.
|
|
|
|
Post by melga on Mar 22, 2005 14:14:42 GMT 11
Hi everyone
Yeah got her all serviced... oils , all filters put injector cleaner etc.. no major improvement ... but the turbo is now whizzing quite noticeably which is bringing me back to the original thaught that the lack of power at high revs is due to turbo problem... I do not usually beat the crap out of the engine but i like to know that i have a perfect package... anyway it seems it is better to replace the turbo before it breaks as some metal could make its way into the engine... is this right? if the turbo breaks in the meantime can i still drive the car if it goes? or it simply wont go at all? cheers to all
|
|
|
|
Post by geeves on Mar 23, 2005 21:09:08 GMT 11
Did you buy privatly or from a dealer Turbo noise is a good reason to make the dealer or warrentee company replace it but it would be unlikly to damage the rest of the engine. It might be a good idea to get a diesel mechanic to have a listen though for piece of mind. Some turbos whine due to surface heat cracks in the housing that never get any worse but sound like a banshee. Other turbos whine due to bearings and are not long of this earth. The turbo on the 3.1 cant be rebuilt and costs slightly more than a credit card to replace.
|
|
|
|
Post by melga on Mar 25, 2005 12:30:18 GMT 11
Hi Geeves .. I bought it prtivately and the purchase price was already taking into account a major mechanical failure .. so i am covered...
Yeah it is an expensive exercise... NZ$1850.00 ( that's $950.00 for the unit the rest is labor) 1st quote... Graham said her MU pulls quite nicely to 3500rpm... well that is the case with this one.... but i will check with a mechanic this whizzzing noise ... the trouble its getting worst which leads me to think it is indeed the bearings... Now is easter and I wont be doing anything for a few days... So let you know later... Have a good Easter everyone...
|
|
|
|
Post by draganlada on Jan 23, 2006 19:17:44 GMT 11
Normaly I don't rev my engine much over 3000,but I have noticed it is inpossible to rev it up over 3500 even in neutral ( I've read rev limitter is at 4200).When driving it revs freely up to 3250 and after that it looses power and it needs eages to reach 3500 rpm.It was like that since I bought it and changing of filters and oil dasn't help so no mater what ( hurry, steep hill or street racing ) I change gears up just after 3000 rpms ( by normaly driving I change gears betveen 2000 and 2500 rpms).
Didn't try to go to the mechanic coz I'm too scared of the bill (I've learnd diesel mechs just for lifting the bonet up are asking 500-600 bucks).
|
|
|
|
Post by geeves on Jan 24, 2006 6:26:41 GMT 11
The 3.1 isnt happy at revs but is far better than the 2.8 down low This is just the nature of the 2 engines Both engines still end up with a power band of around 2000revs its just that the 3.1 is 1500 to 3500 the 2.8 is 2000 to 4000.
|
|
|
|
Post by Harry on Jan 24, 2006 8:02:14 GMT 11
With the motor turned OFF get someone to push the accelerator hard to the floor.On the injector pump see if the throttle lever can be moved any further to the right.That's the one with the cable attached to it.If you can then adjust the accelerator pedal stop bolt [under the pedal] downwards until the lever on the pump hits it's stop at the same time as the pedal is hard down.If that's not the problem you could try adjusting the lever stop.This will be sealed so you'll need to remove the seal first.Make small adjustments only and count the number of flats on the bolt as you turn it.Other than that there may be a governor roblem inside the pump but you don't want to go there.That's for mechanics and idiots like me who should know better.
Hope that helps,Harry.
|
|
|
|
Post by James W on Jan 24, 2006 8:57:29 GMT 11
... plus check the carpet or floor matt is not restricting the travel of the accelerator pedal.
|
|
|
|
Post by draganlada on Jan 24, 2006 11:11:33 GMT 11
[When driving it revs freely up to 3250 and after that it looses power and it needs eages to reach 3500 rpm]
This is on 4jb1 T engine.
I have checked pedal few times beefore and I found it had bit of a free play (for the firs centimetre of travel it didn't pool any of accelerator cable) so I installed small spacer and it has emediate response now.
Problem must be somewhere allse (diesel pumpe, I sopouse).
10X for reply and good will, guys.
Dragan
|
|
|
|
Post by geeves on Jan 24, 2006 13:29:50 GMT 11
with the ecconomy posted earlier I would agree its loseing throtle somewhere Maybe adjust the mixture screw a little
|
|
|
|
Post by draganlada on Jan 25, 2006 23:10:11 GMT 11
Where on the pump is mixture screw located and what is it look like ?
|
|
