Help!!!! Cold weather related issues AGAIN....

[OhioSpyderman]

Yesterday was the first REAL cold day that we've had this winter.

When I got out of work, my Stealth started fine and idled without issue.

I backed out of my space and moved toward the lot entrance, again no issues.

I pulled out onto I-35 (two lane fairly busy road) I accelerated normally for about 100 yards and then the car lost all power and stalled. Attempts to start repeatedly produced running for about 2 or 3 seconds (or until I started to attempt to move).

Panicked, I put on the emergency flashers and opened the hood and checked for obvious issues (blown off Y pipe...). I was dead in the right hand lane, closed the hood and attempted to start again, after a couple futile attempts it stayed running and I moved off the highway. I let it run for a few minutes and then made my way home without further issues.

Fast forward to this morning. Auto start the car from in the house. It runs for a few minutes and I hear it shut off. It attempts twice to restart, runs for a few seconds then dies.

I run out and give it a start and feather the accellerator and the car runs and idles fine.

I drive to work without issue.

Things I have tried to resolve the issue:

Coil packs
PTU
MAS
ECU

What I am trying today:

Swap injectors
Do fuel pump relay bypass
Reset ECU

Things I have checked:

Coolant temperature sensor (logged it from cold to warm with no issues)
Air temperature sensor (same as the coolant....)
Measure fuel pressure with external gauge...perfect

I have two ECU's and both act the same, the fuel trims eventually all go to 81%.....

Any advice is greatly appreciated.....

Bob.

[CoreyB]

Change your fuel filter and get some dry gas.

[OhioSpyderman]

Fuel filter was changed shortly after purchase. Once the engine bay warms the car runs like a top.

Until the bay warms I can hear a "clicking" which is NOT lifter tick (too high pitched)....

Bob.

[BlackStealth]

Fuel filter was changed shortly after purchase. Once the engine bay warms the car runs like a top.

Until the bay warms I can hear a "clicking" which is NOT lifter tick (too high pitched)....

Bob.

Purge control solenoid tend be loud in cold temperatures. Mine becomes quiet once the engine bay warms up the solenoid.

[BigTyla]

Fuel filter was changed shortly after purchase. Once the engine bay warms the car runs like a top.

Until the bay warms I can hear a "clicking" which is NOT lifter tick (too high pitched)....

Bob.

Is the clicking coming from the throttle body area?

[CoreyB]

Find the source of the clicking. Might be EGR related.

[Emilie@GZP]

Hans was just telling me to come in and post to bypass the fuel pump relay.

[a2j]

after a huge outside temp change over night, I had very similar symptoms. Up to the point when car would not fire at all, ever. It was bad CAS.

[DocWalt]

I had clicking from the FPR solenoid when it was cold out. Didn't seem to affect anything, but maybe yours is sticking?

[OhioSpyderman]

Haven't pin pointed the clicking yet, but when I went to do the fuel pump relay bypass, there was water INSIDE the rubber cap and rust on some of the terminals.

I cleaned things out and sprayed some contact cleaner in the sockets.

Bypass complete, relay bye-bye...

Will advise on what happens tomorrow morning....

Thanks for all the input

Bob.