Idle-control valve?

[KDog]

Fords used a PWM type. The autronic uses PWM modulated types and they sell a Ford ISC valve so this would appear to be the case.

The other types are usually stepper motor or servos, such as the Toyotas or Holdens (not sure about Nissans).

The PWM type should only have two wires.
The stepper motor types will have at least 4 wires or 6 wires. The servo types will have 3 (this is if they exist, I just assumed that someone will have used one).

They all have two connections for air. One is the intake which should hook up to your intake after the air filter somewhere and after Airflow meter (if you have one) the other goes into your intake plenum or intake after the throttle body. It shouldn't matter which way around they go. The ford one has two barbs for the airline so should be easy to hook up.

Go to www.autronic.com and go to the control valves section under the Accessories heading. The ford valve is at the bottom.

[FMC351]

Forg: Sounds like, (and I could be wrong), that like me you like to do it yourself, but are not fully educated in finer technicalities.
I find it best to consult a repair manual and identify each component in the manual and match it to my vehicles. If you dont have one the local library may.
Now you know what you do and don't have, and where to go from there, even its name.

I recently did this for a mates rice burner (Pintara).
It ran smooth, then rough, then smooth for days then rough.
In the end, I just want to burn it. Give me a carby anyday.

Ultimately, these things get very complex and without proper diagnostic equipment, only rudamentary testing can be carried out on the existing components to see if they are contributing. Ive found that with these magic computers, everything is linked.
Pay someone, it saves your sanity, and possibly your donk.

[Captiva Fan]

Originally posted by FMC351
Forg: Sounds like, (and I could be wrong), that like me you like to do it yourself, but are not fully educated in finer technicalities.
I find it best to consult a repair manual and identify each component in the manual and match it to my vehicles. If you dont have one the local library may.

I have got the factory workshop manuals; but as it's aftermarket EFI on a car wot didn't have EFI previously this stuff ain't in there.

I did obtain a valve today though (off a VL; it has "Nissan" and "Made in Japan" proudly stamped all over it), cleaned it up, and hopefully it'll get fitted soon ...

[Rollin]

just to clarify that discussion on the other page about "should the TB be open or closed at idle?" the answer is yes, and the revs that the car idles at with the Idle control motor unplugged is called the "base idle"

lets say we are talking falcons (they have PWM ICS like Forg has) you set the base idle by putting the car in diagnostic mode, unplugging the ICS and then adjusting the throttle stop so the motor idles at about 700-750rpm, then you plug in the ICS and turn the car off.

the reason you need a base idle is because the ICS only has a limited amount of airflow capacity, and has no hope of keeping up with the engines airflow demands in some situations - like driving through/parking in a carpark at night with the A/C on - all that load requires more air than its capable of flowing, so you need to have a base idle as the main idle comtrol, and the ICS just fine-tunes that idle speed depending on demand.

i hope that actually made sence...

[cargle]

TPS?

[Captiva Fan]

Chicken?