4X4 has lost its power!

C2 RIBS · 07 June 2009, 18:21

Ok I am no mechanic and I doubt I ever will be but I have a Nissan Terrano 4x4 2.7 turbo deisel that has 55000 miles approx and regulary serviced.

Recently I have had a great reduction in pulling power. Lost it's va va voom!!! If going up a hill not towing it has no guts to it and today with a trailer on a slight gradient was down to first gear but in two wheel drive.

I have had the turbo checked and cleaned the jets, what should I be doing now please

Tim M · 07 June 2009, 18:30

Sure its not the turbo? Blew mine the other day. 0-60 in about 60 seconds now! Going to have to get another Disco I think.

C2 RIBS · 07 June 2009, 18:42

Tim . Well the mechanic had the turbo unit off last week and tested it so I hope it is not that,

Kernow Buoy · 07 June 2009, 19:40

EGR Valve stuck?

geoffs · 07 June 2009, 20:38

I had water in the one of the sensor wire just behind the grille (drivers side) on my navara and had the same problem, once it dried out all was sorted. I had jetwashed the vehicle the evening before.

C2 RIBS · 07 June 2009, 20:42

Quote:

Originally Posted by Kernow

EGR Valve stuck?

What is this? Ahhhhh help

Kernow Buoy · 07 June 2009, 20:58

Exhaust Gas Recirculation.
It's a green thing (not literally)
here you go
http://newsgroups.derkeiler.com/Arch.../msg00404.html

mdt · 07 June 2009, 22:15

Quote:

Originally Posted by Kernow

EGR Valve stuck?

I would second that. had 3 go in a year in a transit. find it, blank it off and see if you get the power back...

chewy · 07 June 2009, 22:22

Did the mechanic check the turbo and wastegate or just the turbo?

Bigmuz7 · 07 June 2009, 22:57

I have a 4x4 doing the same .. thought I'd lost the turbo, but its still spooling up ok, dunno whats wrong but I was towing a 2.5 tonne load and there was no grunt whatsoever

codprawn · 08 June 2009, 01:51

Remember hot weather will drastically reduce the power of a turbo charged engine unless you have an over sized intercooler.

Cold crisp days are the best - the engine breathes so much better.

bedajim · 08 June 2009, 06:24

My Navara was like this for a couple of weeks. Dealer had it charged £450.00 for a 90000 mile service, but no change

Nissan came up with the idea it was the MAF (mass air flow sensor) and it would need a new one at £400.00
I took it out and cleaned it with some electrical circuit cleaner, taking the air filter off to get to the MAF found this black thing called the air filter element(they start off white). They had never changed it from new it now runs like a dream and I'm getting a free service

Bigmuz7 · 08 June 2009, 07:42

Quote:

Originally Posted by codprawn

Remember hot weather will drastically reduce the power of a turbo charged engine unless you have an over sized intercooler.

Cold crisp days are the best - the engine breathes so much better.

Yes thats very true and did occur to me, but it was way below that. I have had the engine management light coming on intermittantly on mine, and I suspect the engine output was being restricted, but I cant find anything wrong .. oh well a trip to the dealer and more bills

Mollers · 08 June 2009, 07:59

Quote:

Originally Posted by bedajim

I took it out and cleaned it with some electrical circuit cleaner, taking the air filter off to get to the MAF found this black thing called the air filter element(they start off white). They had never changed it from new it now runs like a dream and I'm getting a free service

Will a free manicure be included with the service?

bedajim · 08 June 2009, 08:03

Quote:

Originally Posted by Mollers

Will a free manicure be included with the service?

That's Billy's hand I don't touch dirty tools like yourself

chewy · 08 June 2009, 08:17

From what I remember if you unplug the MAF the car will run better if its the MAF thats faulty.

John Kennett · 08 June 2009, 16:10

Quote:

Originally Posted by Kernow

EGR Valve stuck?

That would give those symptoms - definitely worth a check.

C2 RIBS · 22 July 2009, 14:15

Well its not the turbo, we are now investigating the Mass Air Flow as suggested, the engineers have decided this is the most likely cause and then a fuel pump issue

C2 RIBS · 24 July 2009, 21:26

Finally sorted - air mass sensor replaced and now working. Thanks

Bigmuz7 · 18 September 2009, 21:38

Quote:

Originally Posted by Bigmuz7

Yes thats very true and did occur to me, but it was way below that. I have had the engine management light coming on intermittantly on mine, and I suspect the engine output was being restricted, but I cant find anything wrong .. oh well a trip to the dealer and more bills

Sorted .. a cracked Vacuum pipe

.. no pipe specified, so they could be pulling my plunger for all I know