93 vp. How do i adjust idling please

[superslave]

I have 93 vp berlina and the other day the mrs took it for a drive and ever since it wont idle. if i put it into park or nutural it idles to low and dies but in drive or reverse its fine. can i adjust by the nuts on the accelerator cable or is it done by computer. any directions would be appreciated as i love my commy and is mint other than this. it will idle when chokes on but idle lower than it used to with choke. without choke it stalls.

[centy]

you got a choke?
mine doesn't.
thottle body sevice and maybe replace iac valve is what i would say if yours didn't have a choke.

[superslave]

has automatic choke so im not in control of it. once its warm and choke turns off it stall unless i put it into drive before this happens

[greenfoam]

You don't/can't adjust the idle. It's self adjusting. If it wont idle something is broken and you should fix it. The likely problems are the tps and iac

[superslave]

whats the tps and iac.

[superslave]

do you mean the air intake controller. im not much good with words as i have learnt to fix my cars by trial and error. can you explain what you mean

[delcowizzid]

idle air control valve and throttle posyition sensor both on the throttlebody with wires going to them .

[superslave]

thanks. am i best to replace the valve and or sensor or could it be wiring or dirty valve or sensor.

[superslave]

or will it be easy to just replace th whole throttle body.

[WogBoyz]

firstly try taking off the tb and hit it with a "throttle body and carby cleaner" give everything a good clean out, if it still doesnt work just replace the 2 sensors, no need to replace the whole tb mate

[WogBoyz]

also if u need instuctions for taking the tb off just search on here, plenty of good info to help ya out

[Harey]

+1 for taking off the t/b and giving it a good clean.

[ducker85]

isn't there a screw that stops the butterfly (fully closing) which affects the idel rev's???

[spirto]

you can manually adjust the idle, but this it isn't recomended. The screw was fitted to ensure there is a flow through of air even when the TPS isn't active.

[Cheap6]

The throttle stop screw sets the minimum idle speed possible. The idle air control valve increases the airflow, hence idle speed, around the throttle plate from there. Maybe try a search on base idle (speed)'.

[mitchvsute]

is this screw on a vs ecotec motor