91 na hard to cold start
 

91 na. All stock except catback. 141k miles. Having a problem with cold starts. And by cold starts, I mean the first time I start it in the day. About 25 degrees here in the morning. The car takes a while to start & I know you don't want to hear this, but I'll have to give it just a bit of throttle to get it started. After that, I have no problems at all. Every start after that on the same day has no problems. Car runs perfect, no lights, no misses. I recently did an oil/filter change, plugs & a compression test which came back great. Only thing I still have to do is fuel filter.
Thoughts??

I would start by checking the resistance readings of the coolant temp sensor for the given temperature, per the FSM.

Check the obvious first: connections at the battery and ground, and associated cables.

If the injectors have never been serviced, having them cleaned professionally will make everything better.

I replaced the battery when I 1st got the car & also cleaned up all the connections. Still no change. I'll have a look at getting the injectors cleaned as well.

Check the water thermosensor at the ECU. Wire is Green/Yellow and it should read 2 to 3 volts w/key to on and engine cold. Sensor helps the ECU to decipher how much fuel is used on a cold start.