Hi,

Got a Subaru Impreza going out saturday to a customer and its Over boosting to 1.3 Bar and then cuts out. This will be cutting out as it hits fuel cut,

But why is it over boosting.

Please HELP ASAP,

Thanks to everyone's comments

 

a bit more info is needed really....................de-cat, induction kit, etc. will all raise the available boost....................??
some form of boost controller incorrectly set?? could be the std "boost solenoid" slightly malfuctioning??

does it show any fault codes??

alyn

 

No Fault Codes,
No De-Cat Pipe
No Induction Kit
No Boost controller,

All Standad car apart from a Turbo Gauge, We have disconnected that and no change.

!!!!!!!!!!!

 

Check for oil level being too high, really anything over half way between low and high when the car is cold is probably too much. This can foul the boost control solenoid on the drivers side with oil. If you connect the plugs under the dash to get the ECU doing it's test cycle where is turns all the motors and relays on and off and then spray plenty of brake cleaner down the hoses into the boost control solenoid you can clean it out. A search will give you more info on doing this.

 

Cleaned the soenoide out, did that first, Still Over boosting,

Oil Is Ok,
Cleaned Solenoid

 

You prob already checked, but back to basics, split in vac hose (magnifying glass job), or loose hose clip.

 

Hi, john, managed to get that steering coil sorted! I've noticed that I get fuel cut occassionally, but only with less that 1/4 tank of optimax. Fill it up and see if it still happens. Impreza's seem to be quite prone to suffering fuel starvation.

 

i had this problem on leaving tsl for a service.took it back and they located a pinhole in one of the small turbo hoses,think it went to the boost control solenoid.took them over an hour to find.they used some sort of small pump with a gauge on it.hope that helps!