2003 3lt st down on power and engine light on

Hey all Im Ben, Advice welcome, I have an 03 3lt t/d and got in a day or 2 ago to find it down on power and the engine light is on, it feels like it is being strangled gently, my mate checked the turbo and it is fine (no excess movement or play and its spooling up and down fine). It sounds fine and runs well its just down on power/ doesn't want to rev freely. Its like its having probs breathing or getting enough fuel. Is there a safe mode on these engines that kicks in to avoid running lean if fuel pressure is low?

Sounds like your MAF either needs a clean or needs replacing, also what sort of condition is the air filter in?.
Also are you running a catch can Ben? if not you may find your Intercooler needs a good wash out.
My series 2 had the same prob with the engine light coming on but it has never come back on after fitting NADS.

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Originally Posted by 45/70

sounds like your maf either needs a clean or needs replacing, also what sort of condition is the air filter in?.
Also are you running a catch can ben? If not you may find your intercooler needs a good wash out.
My series 2 had the same prob with the engine light coming on but it has never come back on after fitting nads.

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x2 on this mate

Thank you very much, i suspected a sensor of some sort, also fuel and air filters were replaced yesterday. I am very novice when it comes to mechanics/ ability but that sounds like good news to me. I may sound silly but is the maf the sensor on the air intake and do i just take it out and wipe it clean? what is a catch can? With cleaning the intercooler could you give me some advice as to how to go about this safely? Again with an apparently silly question but what is nads? Thank you very much for advice i feel much better about things now. I had a terrible feeling it was going to blow up or grenade itself. Thanks again, the advice is much appreciated!!!

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Originally Posted by Ben81C

Thank you very much, i suspected a sensor of some sort, also fuel and air filters were replaced yesterday. I am very novice when it comes to mechanics/ ability but that sounds like good news to me. I may sound silly but is the maf the sensor on the air intake and do i just take it out and wipe it clean? what is a catch can? With cleaning the intercooler could you give me some advice as to how to go about this safely? Again with an apparently silly question but what is nads? Thank you very much for advice i feel much better about things now. I had a terrible feeling it was going to blow up or grenade itself. Thanks again, the advice is much appreciated!!!

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Thank's roofy and Ben.
Yes Ben, your maf is on your air intake and you will need a torx head spanner to undo it. You can clean it with a spray on contact cleaner but be careful as they are fragile.
A catch can is fitted inline on the hose that runs from your rocker cover to your intake {crank case breather hose} and stops oil residue from getting into your Intercooler and your intake as well as your maf.
To clean your intercooler, I just use some kerosene. First you will need to remove your intercooler and then block one side of it then tip in your kero and give it a shake.
When you are satisfied it's clean just re-fit {making sure you do clamps up tight].
NADS stands for nissan anti detonation system.
Or.
DAWES valve and needle valve,
catch can,
egr block,
and the fitting of both EGT and BOOST gauges.

There is a lot of info on the forums on the above mentioned, just go to the advanced search at top of page.
Good luck.

Paul.

It sounds exactly like mine, the light came on at the weekend. I have an 02 model, the handbook says that the engine light can indicate water in the fuel, but in my case, this is not so. I have cleaned the MAF, checked the diesel and replaced the fuel filter. I am taking it to be fixed tomorrow and will let you know what the problem is with mine so you can check if its the same problem. Does anybody know the price of a MAF sensor just in case it ends up being the problem?

could possably still be the turbo. i had lack of power. no acceleration, lots of black smoke, using more then normal juce. the problem was a line to the turbo had come off. the turbo over boosted so the computer cut how much fuel was getting to the engine to stop the turbo from over boosting
when i put my foot down.

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Originally Posted by nickpeacock36

It sounds exactly like mine, the light came on at the weekend. I have an 02 model, the handbook says that the engine light can indicate water in the fuel, but in my case, this is not so. I have cleaned the MAF, checked the diesel and replaced the fuel filter. I am taking it to be fixed tomorrow and will let you know what the problem is with mine so you can check if its the same problem. Does anybody know the price of a MAF sensor just in case it ends up being the problem?

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have a look at cleaning it there is a spray u can try i cant remember what its called
. there is also a thred somewhere showing how to test it. if all else fails try http://www.nizzbits.com.au/index.php?cPath=1_13

with mine its just slow to build up revs, but fine once it gets there (Guages Fitted) a bit of a delayed reaction when you put your foot on the pedal. NADS also fitte apart from catch can.

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Originally Posted by Ben81C

Hey all Im Ben, Advice welcome, I have an 03 3lt t/d and got in a day or 2 ago to find it down on power and the engine light is on, it feels like it is being strangled gently, my mate checked the turbo and it is fine (no excess movement or play and its spooling up and down fine). It sounds fine and runs well its just down on power/ doesn't want to rev freely. Its like its having probs breathing or getting enough fuel. Is there a safe mode on these engines that kicks in to avoid running lean if fuel pressure is low?

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Try priming the engine with the pump and start it .if the light goes off for a short time and the engine revs ok for that short time, its just the same as mine.