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Old 12-07-2005, 21:01   #1 (permalink)
JScott
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1997 Ford Ranger 4cyl choke problem


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.

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Old 12-08-2005, 03:01   #2 (permalink)
David M
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Re: 1997 Ford Ranger 4cyl choke problem

On Wed, 07 Dec 2005 20:44:13 -0800, JScott rearranged some electrons to
form:

>
> 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.


It doesn't have a choke.

--
David M (dmacchiarolo)
http://home.triad.rr.com/redsled
T/S 53
sled351 Linux 2.4.18-14 has been up 21 days 6:25

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Old 12-08-2005, 04:01   #3 (permalink)
SC Tom
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Re: 1997 Ford Ranger 4cyl choke problem


"JScott" <boreless@gmail.com> wrote in message
news:1134017053.544041.251640@g14g2000cwa.googlegroups.com...
>
> 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.
>


That truck doesn't have a choke. Check the idle air control valve- that's
possibly the culprit.

SC Tom


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Old 12-08-2005, 08:01   #4 (permalink)
CJB
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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.

CJB

"JScott" <boreless@gmail.com> wrote in message
news:1134017053.544041.251640@g14g2000cwa.googlegroups.com...
>
> 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.
>



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Old 12-08-2005, 14:01   #5 (permalink)
Borly
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Re: 1997 Ford Ranger 4cyl choke problem

Thanks everyone. I see what you mean by the "no choke". As everyone
could see, I was trying to describe that when cold the idle wouldn't
run right, so until the engine warmed up, it will just die. I'll check
with someone I know who can point out the IAC to me and we'll take a
look at it.

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