When modern thermostats fail, they are designed to fail in the open
position. I'm betting that's what is happening on yours Jeff.

Jerry

Jeff Strickland wrote:
> The most recent starting cycles have shown a very slow warm up of my motor.
> Last night, and this morning, the needle did not even approach midscale
> until after I had been on the freeway for several miles. I live two miles
> from the freeway onramp, and my temp is normally to midscale before I get
> there. Today, the scale was only about half way between stone cold and
> midscale, and perhaps below (colder) than that. I got onto the freeway, and
> the needle remained pretty much stuck in place for more than 5 miles, then
> it suddenly began to move to midscale. Once it started going, it went to its
> normal reading.
>
> My inclination is that the tstat is stuck open. Any other thoughts?
>
>
>
>
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/

 

When modern thermostats fail, they are designed to fail in the open
position. I'm betting that's what is happening on yours Jeff.

Jerry

Jeff Strickland wrote:
> The most recent starting cycles have shown a very slow warm up of my motor.
> Last night, and this morning, the needle did not even approach midscale
> until after I had been on the freeway for several miles. I live two miles
> from the freeway onramp, and my temp is normally to midscale before I get
> there. Today, the scale was only about half way between stone cold and
> midscale, and perhaps below (colder) than that. I got onto the freeway, and
> the needle remained pretty much stuck in place for more than 5 miles, then
> it suddenly began to move to midscale. Once it started going, it went to its
> normal reading.
>
> My inclination is that the tstat is stuck open. Any other thoughts?
>
>
>
>
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/

 

Yep stuck open and it does not take mouch, I replace both the thermostat and
radiator cap when I flush the coolant every two years (including the so
called long life stuff) and have never had a problem in all my years of
driving. Many people neglect the small things usually beacuse the small
things are a paon in the butt to get at or check.

HarryS

"mabar" <mabar@NoooSpamgrbonline.com> wrote in message
news:IbCdncAy6uNHSD7cRVn-3g@gbronline.com...
> If the radiator was low on coolant, it might overheat, but low coolant
> would
> not be a cause of slow warmup. Sounds like your thermostat is stuck open
> or
> stuck partially open.
>
> I just replaced my thermostat with a Stant Superstat thermostat, but any
> brand name good quality thermostat with the right temp range will do.
>
> http://www.stant.com/brochure.cfm?br...ocation_id=168
>
> While you are replacing the thermostat, you might as well flush the system
> and add fresh coolant at the same time.
>
> Tom
>
> "johnny" <ajeeperman@comcastdot.net> wrote in message
> news:EqPod.383346$wV.132700@attbi_s54...
>> your radiator may be low on water.
>> old john
>>
>
>

 

Yep stuck open and it does not take mouch, I replace both the thermostat and
radiator cap when I flush the coolant every two years (including the so
called long life stuff) and have never had a problem in all my years of
driving. Many people neglect the small things usually beacuse the small
things are a paon in the butt to get at or check.

HarryS

"mabar" <mabar@NoooSpamgrbonline.com> wrote in message
news:IbCdncAy6uNHSD7cRVn-3g@gbronline.com...
> If the radiator was low on coolant, it might overheat, but low coolant
> would
> not be a cause of slow warmup. Sounds like your thermostat is stuck open
> or
> stuck partially open.
>
> I just replaced my thermostat with a Stant Superstat thermostat, but any
> brand name good quality thermostat with the right temp range will do.
>
> http://www.stant.com/brochure.cfm?br...ocation_id=168
>
> While you are replacing the thermostat, you might as well flush the system
> and add fresh coolant at the same time.
>
> Tom
>
> "johnny" <ajeeperman@comcastdot.net> wrote in message
> news:EqPod.383346$wV.132700@attbi_s54...
>> your radiator may be low on water.
>> old john
>>
>
>

 

Yep stuck open and it does not take mouch, I replace both the thermostat and
radiator cap when I flush the coolant every two years (including the so
called long life stuff) and have never had a problem in all my years of
driving. Many people neglect the small things usually beacuse the small
things are a paon in the butt to get at or check.

HarryS

"mabar" <mabar@NoooSpamgrbonline.com> wrote in message
news:IbCdncAy6uNHSD7cRVn-3g@gbronline.com...
> If the radiator was low on coolant, it might overheat, but low coolant
> would
> not be a cause of slow warmup. Sounds like your thermostat is stuck open
> or
> stuck partially open.
>
> I just replaced my thermostat with a Stant Superstat thermostat, but any
> brand name good quality thermostat with the right temp range will do.
>
> http://www.stant.com/brochure.cfm?br...ocation_id=168
>
> While you are replacing the thermostat, you might as well flush the system
> and add fresh coolant at the same time.
>
> Tom
>
> "johnny" <ajeeperman@comcastdot.net> wrote in message
> news:EqPod.383346$wV.132700@attbi_s54...
>> your radiator may be low on water.
>> old john
>>
>
>

 

My `79 CJ-5 once failed closed, I could drive all of a half mile at a
whack. My `89 Cherokee once failed open.



On Tue, 23 Nov 2004, Jimmy wrote:

> I have a'97 TJ and my thermestat failed "open" Better than failing "closed".
>
> Jimmy
> "Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
> news:10q7bjrf5ru833b@corp.supernews.com...
>> The most recent starting cycles have shown a very slow warm up of my
>> motor.
>> Last night, and this morning, the needle did not even approach midscale
>> until after I had been on the freeway for several miles. I live two miles
>> from the freeway onramp, and my temp is normally to midscale before I get
>> there. Today, the scale was only about half way between stone cold and
>> midscale, and perhaps below (colder) than that. I got onto the freeway,
>> and
>> the needle remained pretty much stuck in place for more than 5 miles, then
>> it suddenly began to move to midscale. Once it started going, it went to
>> its
>> normal reading.
>>
>> My inclination is that the tstat is stuck open. Any other thoughts?
>>
>>
>>
>>
>>
>
>
>

--
Some conditions apply. YMMV. This message was packed by weight, not
by volume. TWIAVBP, local variation may occur. Dramatization, not a real
authority. Do not induce vomiting. No user-serviceable words inside.

 

My `79 CJ-5 once failed closed, I could drive all of a half mile at a
whack. My `89 Cherokee once failed open.



On Tue, 23 Nov 2004, Jimmy wrote:

> I have a'97 TJ and my thermestat failed "open" Better than failing "closed".
>
> Jimmy
> "Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
> news:10q7bjrf5ru833b@corp.supernews.com...
>> The most recent starting cycles have shown a very slow warm up of my
>> motor.
>> Last night, and this morning, the needle did not even approach midscale
>> until after I had been on the freeway for several miles. I live two miles
>> from the freeway onramp, and my temp is normally to midscale before I get
>> there. Today, the scale was only about half way between stone cold and
>> midscale, and perhaps below (colder) than that. I got onto the freeway,
>> and
>> the needle remained pretty much stuck in place for more than 5 miles, then
>> it suddenly began to move to midscale. Once it started going, it went to
>> its
>> normal reading.
>>
>> My inclination is that the tstat is stuck open. Any other thoughts?
>>
>>
>>
>>
>>
>
>
>

--
Some conditions apply. YMMV. This message was packed by weight, not
by volume. TWIAVBP, local variation may occur. Dramatization, not a real
authority. Do not induce vomiting. No user-serviceable words inside.

 

My `79 CJ-5 once failed closed, I could drive all of a half mile at a
whack. My `89 Cherokee once failed open.



On Tue, 23 Nov 2004, Jimmy wrote:

> I have a'97 TJ and my thermestat failed "open" Better than failing "closed".
>
> Jimmy
> "Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
> news:10q7bjrf5ru833b@corp.supernews.com...
>> The most recent starting cycles have shown a very slow warm up of my
>> motor.
>> Last night, and this morning, the needle did not even approach midscale
>> until after I had been on the freeway for several miles. I live two miles
>> from the freeway onramp, and my temp is normally to midscale before I get
>> there. Today, the scale was only about half way between stone cold and
>> midscale, and perhaps below (colder) than that. I got onto the freeway,
>> and
>> the needle remained pretty much stuck in place for more than 5 miles, then
>> it suddenly began to move to midscale. Once it started going, it went to
>> its
>> normal reading.
>>
>> My inclination is that the tstat is stuck open. Any other thoughts?
>>
>>
>>
>>
>>
>
>
>

--
Some conditions apply. YMMV. This message was packed by weight, not
by volume. TWIAVBP, local variation may occur. Dramatization, not a real
authority. Do not induce vomiting. No user-serviceable words inside.