Iv got a disco 1.And when im towing and need more power, it wont rev above 4000 revs. checeked all the hoses, cleaned the intercooler, replaced fuel/oil fillter, give it oil change.Its got a KnN air fillter. and you can hear the turbo workink. any ideaes, anyone help?

Most of the fault codes you have listed refer to some sort of issue with the exhaust system ie: EGR valve operation p0489, exhaust pressure sensor p0473, diesel particulate filter p2002 operation, p2099 fuel trim to rich. 1 fault code refers p0215 refers to the manifold runner sensor on the inlet system.

By the sounds of it with so many related fault codes to the exhaust system im thinking you have a blockage somewhere, i would suggest a couple of things to you.

1. Your diesel particulate filter is clogged up, you can try introduce a forced regeneration with a suitable scan tool. There is plenty of info on Google on how to try and introduce a burn yourself without a scanner. However you'll struggle without getting the thing to rev. You will have to remove the filter and physically check for blockage and replace it as required.

2. Where your EGR valve bolts to the manifold is blocked. Remove the valve itself and inlet manifold, clean it out or replace it as required

3. Your turbo charger itself has failed and requires replacement,hyundai have known issues with them.

4. You have a boost leak, check all induction hoses and intercooler for damage and leakage.

5. Your inlet manifold (which houses your EGR) is gumed up with rubbish and requires cleaning

6. All these faults maybe a direct result with the diesel fuel injectors not sealing. They should be checked and you should research hyundai's common issue with them, even if the issue you have posted above is rectified without taking a look at them.

Try and remove the inlet hose to the turbo and check for free play in the turbine. If that's ok remove the exhaust connection from the turbo and see if it will rev. You will be able to check if it has a blockage in the exhaust system from there.

Hope it helps good luck

could be , the old pedal may have been distorted so you were'nt getting full throttle when you pushed the pedal down , here's hoping

Hi Tom your vehicle is equipped with a Rev limiter it will not allow you to rev the engine above 4000 with the trans in park; as for the first problem you may have one of two things, one of the spark plugs or spark plug wires is bad or you have a flat spot on the throttle positioning sensor in which case have be replaced. Good luck?

Hi

one of 3 faults

1 MAF sensor also Known as air mass sensor
2 EGR valve, this is most common with the 4000 rev limit and a top speed of say 50 mph
3 air leaks or tears in air pipes or poor seals.

I would be tempted to clean both the EGR and MAF sensor before spending any money though, these parts ofetn work much lonegr when clean

Regards

Dan

need more info get back to me

maybe turbo , fuel pump ,or blocked fuel and air filter

did you try removing the intercooler and cleaning it out??sometimes they get pluged

Clean intercooler.Full of engine oil

dirty air filter dirty fuel filter egr valve stuck and needs to be cleanthrottle plate cable frayed and won't allow the plate to open up all the way, moisture in the distributor cap and other things I can think of.

Sounds like you need an O2 sensor. You need to have it scanned, places like AutoZone will do this free of charge.

im having the same problem changed maf changed coils cleaned the carb but still stays at 4000 rpm help please