My Z will not go into extended boost 9.5psi

 

It stay it standard boost 7psi

 

Temp plug replaced , ecu code 55

 

cant find any obvious leaks..

 

My viscous fan is always on, i believe this to be normal

 

But it idles at 900/1000rpm which seems high to me? :confused: what should it idle at ?

 

Has anyone got a pic of the BSCV connections, i believe mine 2b connected, will be nice 2c im looking in the right place ..... ;)

 

Im stuck guys any advice welcome

My Z will not go into extended boost 9.5psi

 

It stay it standard boost 7psi

 

Temp plug replaced , ecu code 55

 

cant find any obvious leaks..

 

My viscous fan is always on, i believe this to be normal

 

But it idles at 900/1000rpm which seems high to me? :confused: what should it idle at ?

 

Has anyone got a pic of the BSCV connections, i believe mine 2b connected, will be nice 2c im looking in the right place ..... ;)

 

Im stuck guys any advice welcome

 

Have you tried bypassing the detonation sensor with a 1k ohm (if I remember correctly) resistor. I had the same trouble but seemed to always get 55 when I checked. Also, the temp sensor could be faulty but not necessarily bring up a fault code. My fan kept runnung until I bypassed the det sensor and cleaned the temp sensor connections. When fan stopped running, went to full boost.

Have you tried bypassing the detonation sensor with a 1k ohm (if I remember correctly) resistor. I had the same trouble but seemed to always get 55 when I checked. Also, the temp sensor could be faulty but not necessarily bring up a fault code. My fan kept runnung until I bypassed the det sensor and cleaned the temp sensor connections. When fan stopped running, went to full boost.

 

 

Thanks 4 the advice,

 

I have changed the temp sensor already,

 

Did the fan stop running when you cleaned temp sensor or when you by passed det sensor ?

Usually stops when the connectors are cleaned bud :hyper:

Viscous fan should always on. Its the Auxillery fan under the nose cone that will come on if there is a fault with the temp sender.

 

The boost selonoid connectors are sitation above the turbos and are black, check they are plugged in.

 

Are you using an afterket gauge ? Is it 7psi all the time, every time ?

martin are you sure you changed the right temp sensor (one that goes to ecu), then make sure its got continuity down the cable to the ecu (connectors) iff the fans staying on then its this area you need to check otherwise the chip in the ecu is faulty. The boost issue you need to check you aint got a leak in the boost circut (boost pipes,vacume hoses,or even a split in the intercoolers) the fact you have a high idle might possibly be a vacume leak which as the tubs spool up becomes a boost leak, with the car idling spray wd40 around all the vac pipes and the top boost pipes iff the rpm increases you have a leak and its easly pinpointed too. hth ;)

Viscous fan should always on. Its the Auxillery fan under the nose cone that will come on if there is a fault with the temp sender.

 

The boost selonoid connectors are sitation above the turbos and are black, check they are plugged in.

 

Are you using an afterket gauge ? Is it 7psi all the time, every time ?

 

 

Yes its the the viscous fan thats on, i thought that was normal,

 

Yes BSCV are connected

 

Yes its an aftermarket gauge, & max boost is 7psi maybe 7.5psi max every time yes

 

:confused: :confused: :confused:

martin are you sure you changed the right temp sensor (one that goes to ecu), then make sure its got continuity down the cable to the ecu (connectors) iff the fans staying on then its this area you need to check otherwise the chip in the ecu is faulty. The boost issue you need to check you aint got a leak in the boost circut (boost pipes,vacume hoses,or even a split in the intercoolers) the fact you have a high idle might possibly be a vacume leak which as the tubs spool up becomes a boost leak, with the car idling spray wd40 around all the vac pipes and the top boost pipes iff the rpm increases you have a leak and its easly pinpointed too. hth ;)

 

 

Yes deffo right sensor the one with yellow cap at front of engine,

 

Its the viscous fan thats on all the time & this is normal

 

Im running out of WD40 & cant find the leak... :cry: lol

 

With high rpm im thinking its a leak, but i been looking for hours....