thewhitewarrior

hi all,
my mate has a 95 wrx and he is only getting 0.5 boost, its pretty much standard apart from:-
td05 turbo
decat stainless
induction kit
there is no leaking pipes and it runs fine other than low boost, what would make the boost so low,
thanks, phil.

thewhitewarrior

just done a search, does anyone think cleaning the boost solenoid would do anything???

morandpeter

iTrader: (5)

certainly doesnt hurt. got any codes coming up when you flah the ecu?

morandpeter

iTrader: (5)

also is the boost like this after all the mods?

spyro123

has it always been at 0.5 boost since owning the car or just started playing up one day randomly?

rich09

boost restrictor pill

thewhitewarrior

thanks for the replies, the car been on good boost since the mods have put on, it went low all of a sudden, and there is no codes coming up, ill get the b/s cleaned and reset the ecu with the plugs under the dash for him, ill let you guys know what happens with it tommorrow,
thanks again,
phil.

thewhitewarrior

what could go wrong with the restrictor pill???

Mrchips

iTrader: (7)

Sounds like its running actuator pressure. Is the actuator tight, when pulling arm? as might be slack. Or the penny washer inside turbo unit might be flapping, might need tighten, this again is on the actuator arm.

morandpeter

iTrader: (5)

is it there for a start lol. could be choked up us well.

Mrchips

iTrader: (7)

Is it a three port solenoid? The pipes are the wrong way round are they?

thewhitewarrior

yeah the pill is still there but like you said it could be choked, ill clean that too, ive checked the arm and seems fine, i even left the vac pipe off so it never opened and its still the same, ill check it again though,
its a 3 port and i looked at the vac pipes as i did that to mine onces :-)

thewhitewarrior

ive just started the list but got as far as the ecu reset, i joined the green and black wires together and drove round, the numbers 32 (02 sensor) and 43 came up, what is number 43 anyone know???

joz8968

iTrader: (13)

43 is the Throttle Position Sensor (TPS).

thewhitewarrior

arrr, thats the black adjustable box thing on the throttle body, yes?
would these 2 codes make it drop the boost?

addi monster

iTrader: (6)

it may well be running in limp mode due to the tps throwing up codes,.

thewhitewarrior

ill get it swapped, reset the ecu and see what is what, ill let you know, thanks for the help everyone :-)

thewhitewarrior

well ive ordered the o2 sensor but in the mean time i changed the tps and reset the ecu, drove it a few mins with the green and black plugs connected and the same codes came up (32 and 43) i was expecting the o2 sensor but not the tps, how can i check the tps?
thanks, phil.