In reply to a message from Phil in Ar sent Thu 2 Feb 2012:
OK, I discovered the AAV valve plate moves sideways, and
mine moves freely and returns to a little less than 1/8 inch
gap at the right side with the engine cold and ambient temp
50 degrees. (My parts Sovereign’s AAV had a similar gap.)
I tried putting ice on the AAV to see if it would open
further, but couldn’t lower the temp enough to make it move
much.
The AAV heater measured 21 ohms between the pins, the
Thermotime switch measures 0 ohms between pins, 0 ohms to
ground on one pin and 50 ohms to ground on the other pin. I
got 12V across the CSI connector and at the thermotime
connector in ignition crank position.
The coolant temp sensor measured 3220 Ohms at 50 degrees F
and later measured 251 ohms at 186 degrees F; I am checking
temp VS resistance as it cools down.
I did try starting from cold with the AAV hose off and it
fired and died six times. Then with the hose reinstalled it
fired and idled very roughly for 3 to 6 seconds before it
settled into an 1100 RPM idle in neutral; no throttle was
used in any start attempt.
So I am perplexed. The AAV, coolant temp sensor, and
thermotime switch appear to be working, and I had cleaned
and cycled the CSI 100 times several months ago when I
swapped my leaking CSI for a spare, changed the AFM, and
verified fuel pressure. It starts and runs fine warm, but
won’t start and idle from cold until the 4th or 5th try.–
Phil W - 87XJ6, 86DD6, 85Sov, 74E, 67DQ450, 67DR450, 67Mk2
Arkansas, United States
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