MY MU WON'T GO OVER 100km/h..

[Frenchinoz]

HELP NEEDED HERE,THIS IS DRIVING ME INSANE!!
Hey guys, wanting to know if anyone has this problem before?
My MU 3.1 TD 94 automatic had full service(oil,oil filter,fuel filter,air filter) + automatic gearbox serviced by a specialist..
So when I'm driving on motorway, my car drives up to 100ks/hr and won't go any faster and stays just under 3000rrp!
Also changed my turbo about 6months ago..
Otherwise This mu drives like a dream and doesn't blow any smoke.
Any help will be greatly appreciated!
Aurevoir.

[stardog]

IS the over drive button working should light up on the dash was it going over 100klm before the service

[Frenchinoz]

Hey stardog, thanks for the quick response..
The overdrive is on "off mode", and no the car was already like that when I bought it ..

[Roderunner]

If the gear lever is in "park" can you rev the engine over 3000?

[Frenchinoz]

Yes just tried it and rev over 3500 easily!

[Roderunner]

I would be checking the exhaust warm-up butterfly (if your model has one) to make sure that it's open, the other thing that springs to mind is the injection pumps age. Often the governer and other parts in the pump develop wear marks so can stick instead of sliding easily, a good dose of diesel injector cleaning additive can help here, like Nulon's product.

[Frenchinoz]

Cool I'll have a diesel injector additives tomorrow and go for long drive to see how it goes..
Otherwise I'll take it to the local mechanic to check it out on Monday and let you know guys what s the problem.
Cheers for your help guys

[geeves]

also make sure the mat isnt bunched up under the pedal

[SamMu93]

Check the throttle limit screw above the fuel pump. If it has a cap on it, then should not have been adjusted from factory. If it was adjusted clockwise it will restrict the throttle - I had this, it did the same to me. Mind you- I adjusted this in the first place thinking it was the fuel adjustment screw.

[Frenchinoz]

Hey guys,
Thanks for your help, after putting a good dose of nulons,my mu drives smoother and can reach 115km/hr..
I'll check the trotlle limit screw tomorrow morning and let you know how I go!
Cheers

[geeves]

also check your turbo is boosting properly and that the small hose from between the turboand inlet manifold, and the top of the fuel pump hasnt split of become disconected. This hose tells the pump how much boost is there so it can match this to fuel.

[Hamdog]

also make sure the mat isnt bunched up under the pedal

the amount of times i have thought there was something wrong with my wizard and its turned out to be the floor mat bunched up under the pedal lol