Thread: Td5 rev Q

Pps I've ran the nanocom over it and there's no faults showing ... Swaped out the fuel pump relay( charged at one pin with another one(air con) earlier on... Ya think it could have cooked this one to?

Wow! is it me? Am I the only one who has no idea of what your question is?

What has rev limit got to do with losing speed on hills?

In any case AFAIK the rev limit for a Td5 is 4500 and autos change at 4200 in a TD5 D2. I say AFAIK as I have never reached the limiter.

I fear this will not help as you seem to have a torque/boost problem if losing speed on hills.
Regards Philip A

More asking what the cars are Erving at in a given gear(4 and5)..... I seem to be down on revs...... Loosing power on hills and loosing speed on the flat 9 or 10 kpm ... Car seems to be reduced in its rev range....
Apologys on lack of clarity I'm full of oxicnton and various sedatives
Thanks for you're reply

It's a similar feeling to leaking injector seals hence the rev question .... My top speed is only 110( gauge is out so more like 105 kph....) perhaps it's time to douse it in petrol and flick a match in.......it's not just hills it's flat land to just more prominent on hills .... It's fine on steep dirt roads up to fourth gear....... I'll look at n lossen up the waste gate tonight and plug in the nano com and see what revs I get in each gear......( if I can get into the car that is)...... Would the fuel return valve ( being damaged possibly be depressurising fuel at higher revs??...... The no fuel but air through membrane be an issue... The membrane is gone due to being totally blocked so there's just the insert with hole in the return line?
Funny how mechanics crap out at the most serious times...it's like driving a hand grenade atm

If the fuel pressure regulator membrane was holed , diesel would **** out everywhere as it has a drain.
Perhaps you should look at whether your rubber pipes around the intercooler are delaminating.

See what boost you are getting on the Nanocom and if you have any errors.

It is not possible for the revs to change downwards at a certain speed , only to go UP if the clutch is slipping, unless you have changed the tyres for bigger ones.
Another possibility is a dying fuel pump.
Regards Philip A

No errors on nano com the fuel pressure reg is less than 4000 kms old and dry around housing ...... Now the inter cooler pipes look as if theve been there science new.... I had a look with them of the car and they looked passable but that's no guarantee... Also I may have not tightened them properly........ I'll try and crawl down stairs tomorrow and check again( I'm ok once I'm standing .... Bugger of a thing lower back and neck pain is)

Any idea of boost figures I'd be looking at or just at the rise with acceleration getting uneven?

Ok got out for a short drive with the nanocom
At 100 kph 2650 rpm ( flat to floor or backed off throttle..... Will rev over 3000 I'n 3rd geat)

Ambient 0.95 at. 2645 rpm ( 100 kpm on nanocom)
Turbo 102.95 at 2645 rpm
Manifold turbo pressure .028. @. 2645
Turbo waste gate 36.6..
No fault codes , what I do have at 100Kph is an idle speed error of 1961rpm
To clear it up a bit it won't rev past 2645 rpm in 4th or 5th not loosening revs just not Erving past the2600 2700 rpm
Regards mark

Ambient 0.95 at. 2645 rpm ( 100 kpm on nanocom)
Turbo 102.95 at 2645 rpm
Manifold turbo pressure .028. @. 2645
Turbo waste gate 36.6..

I think you are mixing up some terms.

There are not 2 measures of turbo pressure. This is the instrument screens from the Nanocom evo manual.
Screen 1
Engine speed(from ecu crank sensor)
Road speed( from ecu ABS sensors)
Coolant temp( coolant sensor)
Turbo pressure (from MAP)
battery volt ( ecu_
Screen 2
Ambient pressure ( on EU3 in air cleaner)
airflow( from MAF)
Air inlet temp ( EU3 from air cleaner)
Fuel temp( from fuel cooler or FPS AFAIK)

Your turbo pressure looks OK if a bit low at 14.5PSI
I have no idea what the other pressure you have mentioned is and there is only one sensor for turbo pressure.
Maybe revisit your test and read the instrument screens as per the above.
Regards Philip A