Re: 1997 Ford Ranger 4cyl choke problem
This is indeed a pretty common problem. Idle speed is controlled by the
computer and a little "stepper motor" called an Idle Air Control Valve, or
IAC. The IAC is prone to carbon coking. Usually you can take it off, clean
it thoroughly, and it'll work ok. In some cases, you'll have to replace it.
"JScott" <email@example.com> wrote in message
> 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.