Idle problem seems to be fixed! - PeachParts Mercedes-Benz Forum

mercmad6.3 · #1 10-20-2007, 12:20 AM

Quote:

Originally Posted by CamelotShadow

Well, its good you solved yours

I think my ICV is fine
I saw an old listing
one like mine on ebay
sold for $2.99

LOL

My wierd idle is just on cold start up
its high in park only
I can live with that
but wondering where it is steming from

What you have is an auxliiary airslide from a very early V8 either a 380 or possibly even older such as 450 or 3.5 with djet injection.
With this the idle should be high at cold then slow down to normal 500-650 RPM.
Big problems arise when the aircon clicks in because that idle device is "static". the electronic devices speed the engine up as load increases.
You have probably found the idle dropping really low as the car gets warm,you are in drive,air going at the lights and you want to make a turn...right?.
Someone has fitted it because a fault in the electronic device has caused a high idle and they either didn't know how to rectify it or were being cheap.
The heater type airslide such as have will work oK ,as long as remember that it is very limited in it's application.

slk230red · #2 10-20-2007, 12:29 AM

Quote:

Originally Posted by mercmad6.3

What you have is an auxliiary airslide from a very early V8 either a 380 or possibly even older such as 450 or 3.5 with djet injection.
With this the idle should be high at cold then slow down to normal 500-650 RPM.
Big problems arise when the aircon clicks in because that idle device is "static". the electronic devices speed the engine up as load increases.
You have probably found the idle dropping really low as the car gets warm,you are in drive,air going at the lights and you want to make a turn...right?.
Someone has fitted it because a fault in the electronic device has caused a high idle and they either didn't know how to rectify it or were being cheap.
The heater type airslide such as have will work oK ,as long as remember that it is very limited in it's application.

Hey, would this type of ICV be considered cheap? If all else fails, go to Home Depot.

It's a "Home Depot Gate Valve Special", requires no power connection (note the dangling power connector) and YOU can control the idle speed.

CamelotShadow · #3 10-20-2007, 12:58 AM

Quote:

Originally Posted by mercmad6.3

What you have is an auxliiary airslide from a very early V8 either a 380 or possibly even older such as 450 or 3.5 with djet injection.
With this the idle should be high at cold then slow down to normal 500-650 RPM.
Big problems arise when the aircon clicks in because that idle device is "static". the electronic devices speed the engine up as load increases.
You have probably found the idle dropping really low as the car gets warm,you are in drive,air going at the lights and you want to make a turn...right?.
Someone has fitted it because a fault in the electronic device has caused a high idle and they either didn't know how to rectify it or were being cheap.
The heater type airslide such as have will work oK ,as long as remember that it is very limited in it's application.

That's not nice
wonder who mickeyed with it like that

It was owned by a Rich DR
Well are there really poor ones..?

Maybe the curbstoner?

Haven't run the air yet but it idles fine in drive 650 700 ish

What would it intail bringing it back to being right?

mercmad6.3 · #4 10-20-2007, 01:16 AM

The gate valve is exactly how it works....except the factory set up uses engine heat to open or close it...

good ida that,except that as mentioned above you could find a proper one on ebay for $2,whereas hardware shop prices are around $10.

Quote:

That's not nice
wonder who mickeyed with it like that

It was owned by a Rich DR
Well are there really poor ones..?

Maybe the curbstoner?

Haven't run the air yet but it idles fine in drive 650 700 ish

What would it intail bringing it back to being right?

I wouldn't worry unduly about it. To set it up right,get the engine hot,and with the aid of an assistant,put the car in drive with the engine IDLING ,turn on the air,then turn the large plastic screw slowly until idle sits at 650 rpm. It will idle fast in park ,without the air but who drives a car in park?.
To convert back to stock you need to find both the airslide and a control module,if it's missing from the car. I see them on US ebay quite often. But be aware that you must get the correct parts for your car.right hand drive and left hand drive cars have entirely different parts.