btbaus

iTrader: (3)

i have a S5 and in the FSM page f1-83 in the fuel and emissions section, its says "not to adjust the throttle sensors except when installing a replacement assembly. there is a throttle position auto adjust system in the ECU" i have not replaced my tps. i read and was told that adjusting my tps may solve my low idle problems. has anybody else noticed this warning in the fsm? should or should i not adjust my tps? i did the check lamp test and both lights were on! so i guess the tps needs adjustment but the manual says not to unless the tps has been replaced and i know it hasent.

heres how i did the check lamp test:

with a hot engine and the key in the on position but engine off

i connected the checker lamp into the three pronged green connector near the air filter and pressure sensor. just like this picture

the result was both LED's turned on. did i do the checker lamp test right?

when i turn the screw i turn it to counterclockwise right? do i turn it with the engine off or on? and the screw is very hard to turn . can i spray some wd-40 to loosen it up? thanks for your help!

Rx-7fetish

One of those black wires on that tester needs to go to the slot next to were its at, theres supposed to be three seperate wires total coming off that thing

And someones missing an airbox screw, sorry couldnt resist lol

btbaus

iTrader: (3)

cool thanks. ill rewire it and get back to you all. thanks

Hazard15301

iTrader: (5)

Yea, won't hurt anything.

btbaus

iTrader: (3)

alright so i rewired the checker lamp. both of the led's are on. so i need to turn the scew counterclockwise until only one lamp is lit right? do i turn the screw with the engine off or on?

does anybody have a comment about the fsm warning you not to adjust the tps unless youve replaced it? obviously my tps is not adjusted properly. i want to adjust it but the fsm warns not to unless ive replaced the tps and i havent. what would u do?

o

Jpk3200

I guess they assume you don't know what you're doing . I adjusted mine (except using the resistance method), and it fixed my bucking problems from 2500-3000 rpm.

http://howto.globalvicinity.com/gv_w...i=58&co=1&vi=1

Just be happy you have an NA, and don't have to take off the intercooler before adjusting.

misterstyx69

iTrader: (142)

evn though I never had to adjust my TPS,yet..Look DOWN..below the Post reply..there are Tons of Related threads..I just read one yesterday(damned if I remember the Title!..alzhiemers..Brain fart!)but it was a Real good one.

Mr.LD

different way to know if your tps is bad / causing idle problems is just to check w/ voltmeter connected and tap ur sensor. most sensors , when tapped on, should not change variables too much to be good. if it starts to fluctuate (besides the idea that ur voltmeter contacts are tight) then you should prob just change it out and then adjust.

LD

Rx-7fetish

Yes only one shoule be on, if you screw it to far one way both cut off, both cut on the other, just not sure which direction is which. Dont worry about the warning, its for a twenty year old car when it was new lol.

btbaus

iTrader: (3)

alright well i ignored the warning and adjusted it. now the checker lamp has one light on. my idle is still low though. i turn the scew that is on the dynamic chamber near where it says 13b and couldent get the idle right. it sits under 700rpm and you can hear air escaping from turning the screw too loose. i couldent test the tps with a ohm meter because i dont have one but i plan and purchasing one soon. if the tps fails the ohm meter test then its probably why my idle sucks. if it passes then i dont know what the problem would be! does anybody have an idea of what it might be? if you need more info on the car let me know.

Turbonut

iTrader: (1)

TPS is not for idle speed adjustment, that's done at the BAC valve, or if you have a JSpec with no screw, then the adjustment is made at screw on the linkage.

btbaus

iTrader: (3)

ok well when i adjust my idle by turning the air adjust scew on the throttle body, no significant change is made by turning the scew. i can adjust the idle to be low but i cannot adjust the idle to be higher than 700rpm. any ideas why i cannot get the idle to be at 750rpm?

Turbonut

iTrader: (1)

Not certain as to which screw you're turning, but does the BAC valve have the adjustment screw to use?

btbaus

iTrader: (3)

i found this picture online. its circled in green. if you remove the black cap, a screw is exposed. its referred to as the air adjust screw in the fsm.


i didnt know the bac valve had an adjustment screw. where would i find it exactly? do you know what the blind cap on the bac valve is? it says to remove it and then adjust the air adjust screw to be able to adjust the idle.

Turbonut

iTrader: (1)

Not familiar with the N/A, but the FSM indicates that the idle can be adjusted after removing the blind cap and grounding the test connector.
If no luck, take a look at these, maybe they'll help:
http://fc3spro.com/TECH/PROBLEMS/P1/...LE/lowidle.htm
http://howto.globalvicinity.com/gv_w...i=60&co=1&vi=1

btbaus

iTrader: (3)

nice thanks! ill take a good look at those. can anybody else help me out?