Adjusting The Throttle Position Sensor Tps

[sky20det]

how do i do it. ive done numerous searches, but cannot find out how to exactly. ive read here and in the manual u need approx 0.6v closed and 4v fully opened.

i measured the signal cable (middle) when i disconnected the harness but from that side of things im getting battery 12v from the middle cable. from the TPS side i get nothing, obviously as ive disconnected the harness.. can someone help me adjust or check if my TPS is out of place?

cheers

andrew

[juls33]

u have to check it wiht the ingnition on

and the harnes pluged in

you are looking for around 0.4 closed

just stick your probe into the insulation

[sky20det]

sorry i was looking at the rb25 section.. i see now that the rb20 needs 0.5v fully closed.. am i correct in saying this? would 0.1v (0.6v instead of 0.5v) cause a little bit of a higher idle?

[tom9999]

how do you check if your tps is correct. i got told that my r33gts-t runs to rich???

[sky20det]

tom9999 if ur car runs rich it may be a few different things. as long as its running rich its much safer than lean.

[tom9999]

tom9999 if ur car runs rich it may be a few different things. as long as its running rich its much safer than lean.

ok thanks heaps. one dude said its too rich and he said he was going to adjust the tps so yeah i didnt want him to just incase like you said safer to run richer than leaner.[i know skylines are meant to run rich]

[sky20det]

tom9999 maybe also try replacing the O2 sensor and make sure the fuel pressure regulator vacuum hose is connected properly..

ive adjusted my TPS to 0.5v on my r32 and it has fixed my high idle problem.

[sky20det]

ur car is runing rich hey... i bet not as rich as mine.. i get about 380-390kms per full tank.. and i mean FULL tank.

ive got full exhaust, upgraded fuel pump and fmic.. thats it! very rich over here but i dont mind.

[tom9999]

um i get like 300-350km on a full tank [to the top] wth v power on a stock standard r33 gts-t s1. also most times when i start the car up i can smell fuel like some one has a petrol can under your nose. but its got no leaks check them all.

Edited February 1, 2007 by tom9999

[sky20det]

hmmm thats pretty rich.. but then again u have an rb25 and i have rb20.. maybe u drive too hard..