Been having this off and on for the last year. Choke/idle doesn't work
when first starting when weather is warm, but will usually start
working fine in later starts during the day. Starts working pretty
consistently when temp is in 40-50's in morning, but the last few days
with temps in low 40's and 30's it has stopped working at all. Could
this be due to a faulty sensor? No dash lights are on. Could running
some fuel cleaner help? Is this something that is a known problem, or
do I need to take it to the shop? It's finally starting to bother me at
the point where I would like to get it fixed. I have about 140,000
miles on this truck. Any info is appreciated. Thanks.