~DrEaM~

okay plug the SECS unit in today and it shows 22% throttle on idle... surely it should be 0% ?

It seems quite hard to hold a constant speed on the motorway.....

can i adjust the throttle cable to lower the reading? if so how?

car is a Subaru P1

TEK3 mapped, VF35 FMIC, 550cc

thanks
kevin

banny sti

iTrader: (68)

It is possible to adjust the throttle cable but i could not tell you how. will speak to a friend who did it on my car.

Banny

~DrEaM~

or could it be a sensor? its driving me mad on motorways gas on gas off...

banny sti

iTrader: (68)

The throttle position sensor maybe faulty, can you check the voltage on the secs unit?

Banny

~DrEaM~

thanks banny where is the TPS ?

can you mark on the pics below?

Jolly Green Monster

iTrader: (4)

with ignition on but engine not running press the pedal to the floor.. do you get 100% before the floor or on it?

you need to adjust the sensor.. there are two screws securing it to the throttle body which when loosened slightly allow you to rotate it.

Anti clockwise will reduce the % iirc..

The throttle cable can also be adjusted but this is also altering the throttle butterfly.. it would be worth removing the intercooler and checking if the butterfly is shutting fully to therefore know if this is just a throttle position sensor adjustment needed or the cable. There is a throttle butterfly stop screw which you can wind in and out to adjust the butterfly stop position.
follow the cable and you should see it, when you move the throttle it rotates back against this stop screw.

iirc the closed throttle position for the Throttle position sensor is about 15%.. ie below this the ecu knows you are off the throttle so will cut the fuel on overrun and use the idle maps for idle etc..

You need to adjust to ensure it reaches 100% or nearly and just below 15% when off the throttle, if my memory serves me correct. Fairly sure the manual mentions the exact numbers.

Simon

~DrEaM~

thanks simon...

right if i turn it anti clockwise will i lower the Full throttle positionas well? as i dont want to do that.

the full throttle % is fine. thats proberbly explains why my car is running poor at low revs as its fuelling too much

where are you based? may be i can pop over?

Jolly Green Monster

iTrader: (4)

yes it will effect full throttle too..

probably best if you talk to who mapped it.

PM me where you are in the country and I can let you know when i am nearby if you want me to take a quick look

Thanks
Simon.

every1sgottablue1

Kev, when I see you next can you plug the secs into my car to see whats going on?
Pretty please!

scoobyboy

you could just reset it using the select moniter when you fit a ppp ecu you have to check and reset it if need be.