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Originally Posted by yogi_123rd
I've had a few more thoughts on this problem. I've always thought it was an electrical problem, but you seem to have tested that end. If it's not electrical, there's no gas getting to the cylinders. You mentioned a possible sticking IAC. Hmmmm. What if no AIR was getting into the manifold. The air flow in the throttle body consists of a main bore (for acceleration) and a 1/4 inch bypass bore hole (air bypasses the main butterfly value) for idle which is regulated by the IAC valve.
If the IAC valve is stuck shut, no air can enter the maniford. Fuel injection just injects fuels into the manifold, not the cylinder. The pistons will not be able to suck the gas into the cylinder.
While looking in from the outside of a throttle body may look relatively clean, they are typically grundgy with heavy carbon and oil buildups. The crap comes from blow-by introduced thru the PCV and it gets everywhere.
Since you have reproducable problem, start the car and use liberal amounts of carberator cleaner directly into the bypass hole for the idle system/IAC. You should see that hole off to the side when looking into the throttle body's bore and before the main butterfly valve.
You should know by the next cold crank if that was the problem. At the very least your idle problems may go away.
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I have since verified the fuel pressure at the rail (37psi) during the cold crank no start. I'm going to look into cleaning the intake manifold upstream from the throttle butterfly. It does have black gunk accumulation. I did find one of the nuts missing from the three holding the ECM onto that aluminum bracket. I also cleaned and squeezed all the connections inside the "Brick". I wire-brushed the surfact under the nuts to assure a good connection. One of the torx screws holding the cover on was missing so that is replaced. REset the computer, cold crank problem is still there, but I believe the car seems to have al little more acceleration now. Plenty of get-up-n-go for a grandma car, HA !