Hmmmm,

Never before have i owned a car that has baffled me beyond belief!

Its still not boosting when its warmed up but is ok once i kill the ignition and re-start again- for a while!

Once its been running for a while it only boosts just past the 7psi bar. Odd.

Well its in for a treat at jeff tt's-engine clean, throttle body clean, oil change and fuel filter change. Hopefully jeff can put a bit of light on the situation!

 

LUKE DUKESTER

 

Ps. my drive is looking awfully empty

Could it be your detinator senspor? I hear when they play up this is the type of thing they do.

We already ran a ecu diag. and it came up as '55'.

All the more baffling!!

 

LUKE DUKESTER

Originally posted by zedster:

We already ran a ecu diag. and it came up as '55'.

All the more baffling!!

 

LUKE DUKESTER

 

I had similar symptons a while back and it was the det sensor playing up. I also got a code 55 on the ecu diag but a consult test when running highlighted the problem.

 

Everytime you kill the ignition and restart, you are clearing the ecu errors and that's why your boost is back to normal until the error re-appears.

 

Steve

Ahhhhh,

true!

Cheers!, i'll see what jeff says tomorrow.

 

LUKE DUKESTER

Also, most Nissan ECU's (but not all) limit boost to standard (7psi) until the water temp has reached 60 deg C and thereafter to whatever your upper boost limit is set to (9.5 psi as standard). I assume that shortly after that something is causing the ECU to limit boost to standard again.

Yeah back to the Old ECU error code situation.

 

It only returns an error code when it get garbage from the Det sensor (i.e it is returning a value out of range) If the Detsensor thinks there is detonation it will still limit the boost and not tell you on the ECU. You might not have Detonation of course just a dodgy sensor in strange kinda way.

 

 

 

------------------

Z ya

 

Nico91TT

 

 

Dont be a Punk ...

 

Please please buy it - im gettin desperate now god damit !!!

Luke - do this to rule out the knock sensor.

-- http://zhome.com/ZCMnL/PICS/detonationSensor/detonationSensor.html

--

 

Only DONT leave it bypassed ....

 

To me its the only way to truly rule out the knock sensor.

 

I hear Cooter is the man to see in Hazzard County Luke Duke my man !! LMAO!!!

 

 

Cheerz

Glen

 

CHEERZ GLENN!

 

 

LUKE DUKESTER