Temp increases/decreases but never in the RED
Guest
Posts: n/a
Temp increases/decreases but never in the RED
Hello,
89 Jeep wranlger 2.5L, 108,000miles
While operating my jeep (long distance where I can watch it closely)
the temp will start to increase to 210 degrees, stay there a second
then rapidly decreases to around 150 degrees then starts over (almost
forming a pattern, up and down).
The heater stopped producing heat (everything else runs), so I took
off the heater hoses and hooked a hose pipe to the core, flushed out
some grime and dirt and not it flows without problem through the core.
But the problem is still there, and since I go long distances I want
to find the solution.
To sum it up:
1. goes back and forth from 150-210F
2. flushed core
3. going to change thermostat (could be stuck open? since normal was
in the 200s when it was stable all these years)
4. going to give the system a good flushing, the radiator is about 2
years old (but due to deployments didn't run on a regular basis
Does this process seem sound? and any added insight would be
appreciated...
89 Jeep wranlger 2.5L, 108,000miles
While operating my jeep (long distance where I can watch it closely)
the temp will start to increase to 210 degrees, stay there a second
then rapidly decreases to around 150 degrees then starts over (almost
forming a pattern, up and down).
The heater stopped producing heat (everything else runs), so I took
off the heater hoses and hooked a hose pipe to the core, flushed out
some grime and dirt and not it flows without problem through the core.
But the problem is still there, and since I go long distances I want
to find the solution.
To sum it up:
1. goes back and forth from 150-210F
2. flushed core
3. going to change thermostat (could be stuck open? since normal was
in the 200s when it was stable all these years)
4. going to give the system a good flushing, the radiator is about 2
years old (but due to deployments didn't run on a regular basis
Does this process seem sound? and any added insight would be
appreciated...
Guest
Posts: n/a
Re: Temp increases/decreases but never in the RED
Start by replacing the Thermostat. Two hundred and ten is probably what
your smog engine was designed to run at.
God Bless America, Bill O|||||||O
mailto:----------@----------.com
"PilotAH64" <james.haynie@us.army.mil> wrote in message
news:5b5fc94e-51b9-4c95-9492-3fdeacf0f817@x69g2000hsx.googlegroups.com...
> Hello,
>
> 89 Jeep wranlger 2.5L, 108,000miles
>
> While operating my jeep (long distance where I can watch it closely)
> the temp will start to increase to 210 degrees, stay there a second
> then rapidly decreases to around 150 degrees then starts over (almost
> forming a pattern, up and down).
>
> The heater stopped producing heat (everything else runs), so I took
> off the heater hoses and hooked a hose pipe to the core, flushed out
> some grime and dirt and not it flows without problem through the core.
>
> But the problem is still there, and since I go long distances I want
> to find the solution.
>
> To sum it up:
> 1. goes back and forth from 150-210F
> 2. flushed core
> 3. going to change thermostat (could be stuck open? since normal was
> in the 200s when it was stable all these years)
> 4. going to give the system a good flushing, the radiator is about 2
> years old (but due to deployments didn't run on a regular basis
>
> Does this process seem sound? and any added insight would be
> appreciated...
>
--
Posted via a free Usenet account from http://www.teranews.com
your smog engine was designed to run at.
God Bless America, Bill O|||||||O
mailto:----------@----------.com
"PilotAH64" <james.haynie@us.army.mil> wrote in message
news:5b5fc94e-51b9-4c95-9492-3fdeacf0f817@x69g2000hsx.googlegroups.com...
> Hello,
>
> 89 Jeep wranlger 2.5L, 108,000miles
>
> While operating my jeep (long distance where I can watch it closely)
> the temp will start to increase to 210 degrees, stay there a second
> then rapidly decreases to around 150 degrees then starts over (almost
> forming a pattern, up and down).
>
> The heater stopped producing heat (everything else runs), so I took
> off the heater hoses and hooked a hose pipe to the core, flushed out
> some grime and dirt and not it flows without problem through the core.
>
> But the problem is still there, and since I go long distances I want
> to find the solution.
>
> To sum it up:
> 1. goes back and forth from 150-210F
> 2. flushed core
> 3. going to change thermostat (could be stuck open? since normal was
> in the 200s when it was stable all these years)
> 4. going to give the system a good flushing, the radiator is about 2
> years old (but due to deployments didn't run on a regular basis
>
> Does this process seem sound? and any added insight would be
> appreciated...
>
--
Posted via a free Usenet account from http://www.teranews.com
Guest
Posts: n/a
Re: Temp increases/decreases but never in the RED
Start by replacing the Thermostat. Two hundred and ten is probably what
your smog engine was designed to run at.
God Bless America, Bill O|||||||O
mailto:----------@----------.com
"PilotAH64" <james.haynie@us.army.mil> wrote in message
news:5b5fc94e-51b9-4c95-9492-3fdeacf0f817@x69g2000hsx.googlegroups.com...
> Hello,
>
> 89 Jeep wranlger 2.5L, 108,000miles
>
> While operating my jeep (long distance where I can watch it closely)
> the temp will start to increase to 210 degrees, stay there a second
> then rapidly decreases to around 150 degrees then starts over (almost
> forming a pattern, up and down).
>
> The heater stopped producing heat (everything else runs), so I took
> off the heater hoses and hooked a hose pipe to the core, flushed out
> some grime and dirt and not it flows without problem through the core.
>
> But the problem is still there, and since I go long distances I want
> to find the solution.
>
> To sum it up:
> 1. goes back and forth from 150-210F
> 2. flushed core
> 3. going to change thermostat (could be stuck open? since normal was
> in the 200s when it was stable all these years)
> 4. going to give the system a good flushing, the radiator is about 2
> years old (but due to deployments didn't run on a regular basis
>
> Does this process seem sound? and any added insight would be
> appreciated...
>
--
Posted via a free Usenet account from http://www.teranews.com
your smog engine was designed to run at.
God Bless America, Bill O|||||||O
mailto:----------@----------.com
"PilotAH64" <james.haynie@us.army.mil> wrote in message
news:5b5fc94e-51b9-4c95-9492-3fdeacf0f817@x69g2000hsx.googlegroups.com...
> Hello,
>
> 89 Jeep wranlger 2.5L, 108,000miles
>
> While operating my jeep (long distance where I can watch it closely)
> the temp will start to increase to 210 degrees, stay there a second
> then rapidly decreases to around 150 degrees then starts over (almost
> forming a pattern, up and down).
>
> The heater stopped producing heat (everything else runs), so I took
> off the heater hoses and hooked a hose pipe to the core, flushed out
> some grime and dirt and not it flows without problem through the core.
>
> But the problem is still there, and since I go long distances I want
> to find the solution.
>
> To sum it up:
> 1. goes back and forth from 150-210F
> 2. flushed core
> 3. going to change thermostat (could be stuck open? since normal was
> in the 200s when it was stable all these years)
> 4. going to give the system a good flushing, the radiator is about 2
> years old (but due to deployments didn't run on a regular basis
>
> Does this process seem sound? and any added insight would be
> appreciated...
>
--
Posted via a free Usenet account from http://www.teranews.com
Guest
Posts: n/a
Re: Temp increases/decreases but never in the RED
PilotAH64 wrote:
> Hello,
>
> 89 Jeep wranlger 2.5L, 108,000miles
>
> While operating my jeep (long distance where I can watch it closely)
> the temp will start to increase to 210 degrees, stay there a second
> then rapidly decreases to around 150 degrees then starts over (almost
> forming a pattern, up and down).
>
> The heater stopped producing heat (everything else runs), so I took
> off the heater hoses and hooked a hose pipe to the core, flushed out
> some grime and dirt and not it flows without problem through the core.
>
> But the problem is still there, and since I go long distances I want
> to find the solution.
>
> To sum it up:
> 1. goes back and forth from 150-210F
> 2. flushed core
> 3. going to change thermostat (could be stuck open? since normal was
> in the 200s when it was stable all these years)
> 4. going to give the system a good flushing, the radiator is about 2
> years old (but due to deployments didn't run on a regular basis
>
> Does this process seem sound? and any added insight would be
> appreciated...
>
Sounds to me like you might have a sticky thermostat or air in the
system, either could make it behave like that.
If it was mine I think I'd give it a good flushing, change the
thermostat, and when it's refilled make sure all the air is out of the
system... those Prestone Flush and Fill kits can be a big help with that
as not only can you hook your hose directly to the system but the
pressure helps eliminate air pockets. I used to have a terrible time
with air pockets with my XJ after changing coolant until I put one of
those kits on.
Jeff DeWitt
> Hello,
>
> 89 Jeep wranlger 2.5L, 108,000miles
>
> While operating my jeep (long distance where I can watch it closely)
> the temp will start to increase to 210 degrees, stay there a second
> then rapidly decreases to around 150 degrees then starts over (almost
> forming a pattern, up and down).
>
> The heater stopped producing heat (everything else runs), so I took
> off the heater hoses and hooked a hose pipe to the core, flushed out
> some grime and dirt and not it flows without problem through the core.
>
> But the problem is still there, and since I go long distances I want
> to find the solution.
>
> To sum it up:
> 1. goes back and forth from 150-210F
> 2. flushed core
> 3. going to change thermostat (could be stuck open? since normal was
> in the 200s when it was stable all these years)
> 4. going to give the system a good flushing, the radiator is about 2
> years old (but due to deployments didn't run on a regular basis
>
> Does this process seem sound? and any added insight would be
> appreciated...
>
Sounds to me like you might have a sticky thermostat or air in the
system, either could make it behave like that.
If it was mine I think I'd give it a good flushing, change the
thermostat, and when it's refilled make sure all the air is out of the
system... those Prestone Flush and Fill kits can be a big help with that
as not only can you hook your hose directly to the system but the
pressure helps eliminate air pockets. I used to have a terrible time
with air pockets with my XJ after changing coolant until I put one of
those kits on.
Jeff DeWitt
Guest
Posts: n/a
Re: Temp increases/decreases but never in the RED
PilotAH64 wrote:
> Hello,
>
> 89 Jeep wranlger 2.5L, 108,000miles
>
> While operating my jeep (long distance where I can watch it closely)
> the temp will start to increase to 210 degrees, stay there a second
> then rapidly decreases to around 150 degrees then starts over (almost
> forming a pattern, up and down).
>
> The heater stopped producing heat (everything else runs), so I took
> off the heater hoses and hooked a hose pipe to the core, flushed out
> some grime and dirt and not it flows without problem through the core.
>
> But the problem is still there, and since I go long distances I want
> to find the solution.
>
> To sum it up:
> 1. goes back and forth from 150-210F
> 2. flushed core
> 3. going to change thermostat (could be stuck open? since normal was
> in the 200s when it was stable all these years)
> 4. going to give the system a good flushing, the radiator is about 2
> years old (but due to deployments didn't run on a regular basis
>
> Does this process seem sound? and any added insight would be
> appreciated...
>
Sounds to me like you might have a sticky thermostat or air in the
system, either could make it behave like that.
If it was mine I think I'd give it a good flushing, change the
thermostat, and when it's refilled make sure all the air is out of the
system... those Prestone Flush and Fill kits can be a big help with that
as not only can you hook your hose directly to the system but the
pressure helps eliminate air pockets. I used to have a terrible time
with air pockets with my XJ after changing coolant until I put one of
those kits on.
Jeff DeWitt
> Hello,
>
> 89 Jeep wranlger 2.5L, 108,000miles
>
> While operating my jeep (long distance where I can watch it closely)
> the temp will start to increase to 210 degrees, stay there a second
> then rapidly decreases to around 150 degrees then starts over (almost
> forming a pattern, up and down).
>
> The heater stopped producing heat (everything else runs), so I took
> off the heater hoses and hooked a hose pipe to the core, flushed out
> some grime and dirt and not it flows without problem through the core.
>
> But the problem is still there, and since I go long distances I want
> to find the solution.
>
> To sum it up:
> 1. goes back and forth from 150-210F
> 2. flushed core
> 3. going to change thermostat (could be stuck open? since normal was
> in the 200s when it was stable all these years)
> 4. going to give the system a good flushing, the radiator is about 2
> years old (but due to deployments didn't run on a regular basis
>
> Does this process seem sound? and any added insight would be
> appreciated...
>
Sounds to me like you might have a sticky thermostat or air in the
system, either could make it behave like that.
If it was mine I think I'd give it a good flushing, change the
thermostat, and when it's refilled make sure all the air is out of the
system... those Prestone Flush and Fill kits can be a big help with that
as not only can you hook your hose directly to the system but the
pressure helps eliminate air pockets. I used to have a terrible time
with air pockets with my XJ after changing coolant until I put one of
those kits on.
Jeff DeWitt
Guest
Posts: n/a
Re: Temp increases/decreases but never in the RED
"Jeff DeWitt" <JeffDeWitt@nc.rr.com> wrote in message
news:474a0e35$0$24260$4c368faf@roadrunner.com...
> PilotAH64 wrote:
> > Hello,
> >
> > 89 Jeep wranlger 2.5L, 108,000miles
> >
> > While operating my jeep (long distance where I can watch it closely)
> > the temp will start to increase to 210 degrees, stay there a second
> > then rapidly decreases to around 150 degrees then starts over
> > (almost forming a pattern, up and down).
> >
> > The heater stopped producing heat (everything else runs), so I took
> > off the heater hoses and hooked a hose pipe to the core, flushed out
> > some grime and dirt and not it flows without problem through the
> > core.
> >
> > But the problem is still there, and since I go long distances I want
> > to find the solution.
> >
> > To sum it up:
> > 1. goes back and forth from 150-210F
> > 2. flushed core
> > 3. going to change thermostat (could be stuck open? since normal was
> > in the 200s when it was stable all these years)
> > 4. going to give the system a good flushing, the radiator is about 2
> > years old (but due to deployments didn't run on a regular basis
> >
> > Does this process seem sound? and any added insight would be
> > appreciated...
> >
>
> Sounds to me like you might have a sticky thermostat or air in the
> system, either could make it behave like that.
>
> If it was mine I think I'd give it a good flushing, change the
> thermostat, and when it's refilled make sure all the air is out of the
> system... those Prestone Flush and Fill kits can be a big help with
> that as not only can you hook your hose directly to the system but
> the pressure helps eliminate air pockets. I used to have a terrible
> time with air pockets with my XJ after changing coolant until I put
> one of those kits on.
>
> Jeff DeWitt
I pull the head temperature sensor, fill to the opening, and then put it
back in. I "never" get air pockets, knock on wood. Another trick I
have is to pull one heater hose at the head, and pour some coolant in
the hose so it fills the heater core. Heh, use a funnel for this step.
It seems like a little extra work, but not nearly as much as trying to
get that stubborn air/steam bubble out, once things have started to
heat up.
Cheers,
Earle
--
Posted via a free Usenet account from http://www.teranews.com
news:474a0e35$0$24260$4c368faf@roadrunner.com...
> PilotAH64 wrote:
> > Hello,
> >
> > 89 Jeep wranlger 2.5L, 108,000miles
> >
> > While operating my jeep (long distance where I can watch it closely)
> > the temp will start to increase to 210 degrees, stay there a second
> > then rapidly decreases to around 150 degrees then starts over
> > (almost forming a pattern, up and down).
> >
> > The heater stopped producing heat (everything else runs), so I took
> > off the heater hoses and hooked a hose pipe to the core, flushed out
> > some grime and dirt and not it flows without problem through the
> > core.
> >
> > But the problem is still there, and since I go long distances I want
> > to find the solution.
> >
> > To sum it up:
> > 1. goes back and forth from 150-210F
> > 2. flushed core
> > 3. going to change thermostat (could be stuck open? since normal was
> > in the 200s when it was stable all these years)
> > 4. going to give the system a good flushing, the radiator is about 2
> > years old (but due to deployments didn't run on a regular basis
> >
> > Does this process seem sound? and any added insight would be
> > appreciated...
> >
>
> Sounds to me like you might have a sticky thermostat or air in the
> system, either could make it behave like that.
>
> If it was mine I think I'd give it a good flushing, change the
> thermostat, and when it's refilled make sure all the air is out of the
> system... those Prestone Flush and Fill kits can be a big help with
> that as not only can you hook your hose directly to the system but
> the pressure helps eliminate air pockets. I used to have a terrible
> time with air pockets with my XJ after changing coolant until I put
> one of those kits on.
>
> Jeff DeWitt
I pull the head temperature sensor, fill to the opening, and then put it
back in. I "never" get air pockets, knock on wood. Another trick I
have is to pull one heater hose at the head, and pour some coolant in
the hose so it fills the heater core. Heh, use a funnel for this step.
It seems like a little extra work, but not nearly as much as trying to
get that stubborn air/steam bubble out, once things have started to
heat up.
Cheers,
Earle
--
Posted via a free Usenet account from http://www.teranews.com
Guest
Posts: n/a
Re: Temp increases/decreases but never in the RED
"Jeff DeWitt" <JeffDeWitt@nc.rr.com> wrote in message
news:474a0e35$0$24260$4c368faf@roadrunner.com...
> PilotAH64 wrote:
> > Hello,
> >
> > 89 Jeep wranlger 2.5L, 108,000miles
> >
> > While operating my jeep (long distance where I can watch it closely)
> > the temp will start to increase to 210 degrees, stay there a second
> > then rapidly decreases to around 150 degrees then starts over
> > (almost forming a pattern, up and down).
> >
> > The heater stopped producing heat (everything else runs), so I took
> > off the heater hoses and hooked a hose pipe to the core, flushed out
> > some grime and dirt and not it flows without problem through the
> > core.
> >
> > But the problem is still there, and since I go long distances I want
> > to find the solution.
> >
> > To sum it up:
> > 1. goes back and forth from 150-210F
> > 2. flushed core
> > 3. going to change thermostat (could be stuck open? since normal was
> > in the 200s when it was stable all these years)
> > 4. going to give the system a good flushing, the radiator is about 2
> > years old (but due to deployments didn't run on a regular basis
> >
> > Does this process seem sound? and any added insight would be
> > appreciated...
> >
>
> Sounds to me like you might have a sticky thermostat or air in the
> system, either could make it behave like that.
>
> If it was mine I think I'd give it a good flushing, change the
> thermostat, and when it's refilled make sure all the air is out of the
> system... those Prestone Flush and Fill kits can be a big help with
> that as not only can you hook your hose directly to the system but
> the pressure helps eliminate air pockets. I used to have a terrible
> time with air pockets with my XJ after changing coolant until I put
> one of those kits on.
>
> Jeff DeWitt
I pull the head temperature sensor, fill to the opening, and then put it
back in. I "never" get air pockets, knock on wood. Another trick I
have is to pull one heater hose at the head, and pour some coolant in
the hose so it fills the heater core. Heh, use a funnel for this step.
It seems like a little extra work, but not nearly as much as trying to
get that stubborn air/steam bubble out, once things have started to
heat up.
Cheers,
Earle
--
Posted via a free Usenet account from http://www.teranews.com
news:474a0e35$0$24260$4c368faf@roadrunner.com...
> PilotAH64 wrote:
> > Hello,
> >
> > 89 Jeep wranlger 2.5L, 108,000miles
> >
> > While operating my jeep (long distance where I can watch it closely)
> > the temp will start to increase to 210 degrees, stay there a second
> > then rapidly decreases to around 150 degrees then starts over
> > (almost forming a pattern, up and down).
> >
> > The heater stopped producing heat (everything else runs), so I took
> > off the heater hoses and hooked a hose pipe to the core, flushed out
> > some grime and dirt and not it flows without problem through the
> > core.
> >
> > But the problem is still there, and since I go long distances I want
> > to find the solution.
> >
> > To sum it up:
> > 1. goes back and forth from 150-210F
> > 2. flushed core
> > 3. going to change thermostat (could be stuck open? since normal was
> > in the 200s when it was stable all these years)
> > 4. going to give the system a good flushing, the radiator is about 2
> > years old (but due to deployments didn't run on a regular basis
> >
> > Does this process seem sound? and any added insight would be
> > appreciated...
> >
>
> Sounds to me like you might have a sticky thermostat or air in the
> system, either could make it behave like that.
>
> If it was mine I think I'd give it a good flushing, change the
> thermostat, and when it's refilled make sure all the air is out of the
> system... those Prestone Flush and Fill kits can be a big help with
> that as not only can you hook your hose directly to the system but
> the pressure helps eliminate air pockets. I used to have a terrible
> time with air pockets with my XJ after changing coolant until I put
> one of those kits on.
>
> Jeff DeWitt
I pull the head temperature sensor, fill to the opening, and then put it
back in. I "never" get air pockets, knock on wood. Another trick I
have is to pull one heater hose at the head, and pour some coolant in
the hose so it fills the heater core. Heh, use a funnel for this step.
It seems like a little extra work, but not nearly as much as trying to
get that stubborn air/steam bubble out, once things have started to
heat up.
Cheers,
Earle
--
Posted via a free Usenet account from http://www.teranews.com
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