Wastegate duty solenoid info

[Guest]

Hey guys.

Just fidling with my v3 sti because the idles surging badly.

Had it running and noticed the Wastegate duty solenoid is ticking really loud and fast.

I havnt noticed this before, is this normal? i disconected it and engine check light came up with code 44.

When driving when connected it seems to run and boost 100% apart from idle fault, with its disconected is runs and drives 100% but at about 10psi boost it cuts so to me its oviously working - corectly or not im not sure tho.

Can anyone shed some light?

Thanks

Nic

[soopersubaru]

idle surge? possibly o2 sensor..check with multi meter.....try disconnecting it see if there is a change.....if not probably is o2.

doubt its waste gate causing this

[Kiwi_Fozze]

idle surge could also be a poor setting of idle seat pressure levels on your bov...

[Guest]

Hey,

Thanks for replys, i didnt think that solenoid was causing the idle fault but just wondering if the wastegate solenoid should be clicking away.

The cars stock including the bov apart from a 2.5 exhaust.

I replaced the idle control sensor, seemed ok but then had a bit of a surge - ill check the o2 sensor - i had noticed that its running realy rich and fouls the plugs if i start it and move it then turn it off but theres no 02 sensor fault codes showing.

[soopersubaru]

 SUBZ said:

Hey,

Thanks for replys, i didnt think that solenoid was causing the idle fault but just wondering if the wastegate solenoid should be clicking away.

The cars stock including the bov apart from a 2.5 exhaust.

I replaced the idle control sensor, seemed ok but then had a bit of a surge - ill check the o2 sensor - i had noticed that its running realy rich and fouls the plugs if i start it and move it then turn it off but theres no 02 sensor fault codes showing.

waste gate solenoid should not be clicking for sure..

have recently found a o2 fault on a car..no CEL even when disconnected..sounds like two issues.waste gate sol and o2 sensor

[wrx_lou]

Factory does not click. Aftermarket usualy do.

[Jambun]

 soopersubaru said:

idle surge? possibly o2 sensor..check with multi meter.....try disconnecting it see if there is a change.....if not probably is o2.

doubt its waste gate causing this

o2s output 0.5-1v correct? Is that universal?

[soopersubaru]

 Jambun']

[quote name='soopersubaru said:

idle surge? possibly o2 sensor..check with multi meter.....try disconnecting it see if there is a change.....if not probably is o2.

doubt its waste gate causing this

/quote]

o2s output 0.5-1v correct? Is that universal?

MMmm seems about right 300 milivolts to 700 usually yours is 500 to 1000 so depending on multimeter discrepancy i would say ok.

Remove and clean ICU otherwise known as ISC. (Idle Speed Controller)

[Guest]

Thanks all, ive replaced the idle control sensor and still same so will check out the 02 sensor when i get a chance.