89 s10 2.5 with trouble starting

I got a 89 s10 with a 2.5 fuel injection, I have problems cranking it in cold weather or if it sits for awhile. I've burned up a starter aready, it will always crank after i try and try to start it but I have to give it gas to keep it running until it warms up and then it runs like a champ. I've heard it could be mass air flow censor, a thermostat censor, or just the TBI is messing up. I haven't ran the codes on it yet to check them, but any suggestions on what it could be?

Get codes and post back no.
How is tuneup secandary ign?

at Auto Zone they checked the code and said it was something to do with carbon build up, i can't remember exactly what they said because it was like 2 months ago.. I just forgot my password for on here...

We need the code no.
Get it rechecked again and wright down the no and post back code no.
Also check for lose of spark and fuel when hard to start.

i want to say it was 32 or 30 something but it's been awhile sinse then so i'm probably wrong.. and it's so hard to catch my dumby light on so they can check it so it may be awhile before i repost. thanks for the help though.