'70 D-jet runs terrible cold, great when warm,, Please share your wisdom Options

[Porsche Rescue]

Car starts when cold (not quickly, but it does start, air temp. 80 degrees), then it is a bitch to keep it going. Once on the road and warmed up it performs beautifully.

I have checked the Aux. Air Valve and it is sucking when cold, plugged when hot.
I replaced the head temp sensor even though the old one tested OK. The new one helped a little, but not near enough.

I have studied Brad Anders' site and can't come up with any other ideas of what to check. I have to believe the ignition system is fine because it runs so well when warm. I have checked timing and dwell and they are on spec.

Any suggestions out there?

[toon1]

Does the car back fire on accel before it's warmed up.

I would still suspect the AAR IF it needs MORE fuel before it's warmed up.

Does the idle rise at start up?
Does it lower after a few seconds?

If the wire has diconnected( which they are prone to do ) they will still function, I.E. open when cold and close when warm, BUT it will only close with the heat from the engine bay which takes awhile to happen, usually about 10 min. or more.

Try taking the AAR out and putting it in the the freezer to open it.

Then hook the wire to 12v+ and an aligator clip from the batt. - to the AAR case (where it mounts to the air box is a good place) and see if it closes.

If not, the wire has come loose inside.