where can you buy a 1999 Cougar V6 IACV

Let's look at it the other way. What do you need to do to your UIM to accept the later version of the IACV?

After all, this isn't a problem that's going to get better.
 
I have a spare UIM if you need something to work with away from the car, then no harm done if something goes irretrievably wrong.
 
Looking through the list of results of a search on US eBay it appears to be 'manufacturer dependant' as to whether a spring is present in the lower chamber.
For instance, there is one with a horizontal plug connector but no spring here:

http://www.ebay.com/itm/Idle-Air-Co...ash=item3601176c48:g:~FAAAOSw74FXOawi&vxp=mtr

Mako said:
Let's look at it the other way. What do you need to do to your UIM to accept the later version of the IACV?

After all, this isn't a problem that's going to get better.
Click to expand...

I don't think it's a case of having to physically adapt it.

Paul explains it in post no8 here:

https://forums.ukcougar.club/threads/29864-Anti-Moosing-Kit-Didnt-solve-the-issue
 
Might have to order that 2nd one from the USA, cant see one at all on the UK site.

Failing that it will have to be an engine swap :LOL:
 
Mako said:
But that's exactly my point. Doing the "why" analysis...

"The earlier engine with the IACV and 90 degree connector produces more pressure than the later engine with the straight connector."

Why does it? Why is it different? Why can't we adapt them to be the same?
Click to expand...

Would expanding the pipe work around the entry point reduce the pressure? Or maybe extending the hose from the UIM?
 
Mako said:
Let's look at it the other way. What do you need to do to your UIM to accept the later version of the IACV?

After all, this isn't a problem that's going to get better.
Click to expand...
Rebuild it :LOL: you need to reduce the pressure flowing through that part of the system, from what I can tell there are 4 types of IACV that all look very similar yet only 1 of them will work correctly on the earlier c1 engine, C1.5 and C2 engines appear to give you a wider choice (y) I believe the AC80 is the correct one for the early engines where I believe the later engines accept the AC251 which is the same as the MK3 Mondeo (I am not sure if this is the same on the st200 and st220) indeed my Cougar which is a C1.5 is running perfectly fine with a AC251 installed, Gem's Coug which is a 99 C1 has throttle hang, throttle drop and hunting with the AC251 installed, I will be refurbing her old AC80 with new seals and spring at the weekend so will let you know if it works (y)

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Mako said:
But that's exactly my point. :)edit: I realise they're bolt-compatible). Doing the "why" analysis...

"The earlier engine with the IACV and 90 degree connector produces more pressure than the later engine with the straight connector."

Why does it? Why is it different? Why can't we adapt them to be the same?
Click to expand...
I havnt got the foggiest of ideas, all I know is that when plugged into my diagnostics laptop Gem's cougar is showing 17PSI through the UIM and my Cougar with a later engine is showing 12PSI without knowing what creates this difference in pressure I do not know where to start with adaptions, what I do know is that its not the UIM that creates the pressure as I have swapped my UIM onto Gems car and vice versa and the readings are the same.
 
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