Joe LaVigne

On 2 Sep 2006 23:51:19 -0700, Will wrote:

> I have a 91 Accord, auto. It will not stop overheating. I've switched:
> the front temp switch, the coolant temp sensor, adjusted timing,
> flushed it, put in new coolant twice, put in new thermostat (even took
> it out at this point, still overheats). The only things I haven't done
> are: the rear temp switch, water pump, and radiator.
>
> When I start driving it, it will run normally for about 10-25 minutes.
> After its warmed up with the temperature about halfway, it will stay
> that way for another 5-8 min. Then it gets to about 2/3 of the way on
> the gauge and will stay that way for another 5-8 min. After that, it
> will progressively get hotter (which I never let it do). If I turn the
> heater on, it will cool the engine from 3/4 temperature, all the way
> down to 1/2 way at Normal operating temperature, and eventually will
> climb back up to 2/3 of the way. Anyone got any suggestions?

Are the fans running? Sounds very much like the problems I have had in the
past when the cooling fans stopped operating...

--
Joseph M. LaVigne
jlavigne@hits-buffalo.com
http://www.thelavignefamily.us/MyPipePages/ - 9/4/2006 1:14:13 AM
Tobacconist Brick and Mortar Database: http://bam.tobaccocellar.org/

"Is it true that you smoke eight to ten cigars a day?"
"That's true."
"Is it true that you drink five martinis a day?"
"That's true."
"Is it true that you still surround yourself with beautiful young women?"
"That's true."
"What does your doctor say about all of this?"
"My doctor is dead."
George Burns (1896 - 1996)

Michael Pardee

"Will" <wrichards2005@msn.com> wrote in message
news:1157266279.331255.237380@e3g2000cwe.googlegro ups.com...
>I have a 91 Accord, auto. It will not stop overheating. I've switched:
> the front temp switch, the coolant temp sensor, adjusted timing,
> flushed it, put in new coolant twice, put in new thermostat (even took
> it out at this point, still overheats). The only things I haven't done
> are: the rear temp switch, water pump, and radiator.
>
> When I start driving it, it will run normally for about 10-25 minutes.
> After its warmed up with the temperature about halfway, it will stay
> that way for another 5-8 min. Then it gets to about 2/3 of the way on
> the gauge and will stay that way for another 5-8 min. After that, it
> will progressively get hotter (which I never let it do). If I turn the
> heater on, it will cool the engine from 3/4 temperature, all the way
> down to 1/2 way at Normal operating temperature, and eventually will
> climb back up to 2/3 of the way. Anyone got any suggestions?
>
Although I would not rule out a bad head gasket out of hand, I am in the
camp that feels the radiator isn't getting rid of the heat. From what you
describe coolant flow is okay.

I am with Joe - make sure the radiator fan is running. If that's okay, take
a hose with a squirt nozzle and spray from the backside of the radiator to
the front, then from the front to the back. Sometimes dirt and bugs will
plug the airflow that much. Still no go? I'd recommend looking hard at
replacing the radiator. If it is the original, it is overdue for developing
cracks in the header anyway.

Mike

Michael Pardee

"Will" <wrichards2005@msn.com> wrote in message
news:1157266279.331255.237380@e3g2000cwe.googlegro ups.com...
>I have a 91 Accord, auto. It will not stop overheating. I've switched:
> the front temp switch, the coolant temp sensor, adjusted timing,
> flushed it, put in new coolant twice, put in new thermostat (even took
> it out at this point, still overheats). The only things I haven't done
> are: the rear temp switch, water pump, and radiator.
>
> When I start driving it, it will run normally for about 10-25 minutes.
> After its warmed up with the temperature about halfway, it will stay
> that way for another 5-8 min. Then it gets to about 2/3 of the way on
> the gauge and will stay that way for another 5-8 min. After that, it
> will progressively get hotter (which I never let it do). If I turn the
> heater on, it will cool the engine from 3/4 temperature, all the way
> down to 1/2 way at Normal operating temperature, and eventually will
> climb back up to 2/3 of the way. Anyone got any suggestions?
>
Although I would not rule out a bad head gasket out of hand, I am in the
camp that feels the radiator isn't getting rid of the heat. From what you
describe coolant flow is okay.

I am with Joe - make sure the radiator fan is running. If that's okay, take
a hose with a squirt nozzle and spray from the backside of the radiator to
the front, then from the front to the back. Sometimes dirt and bugs will
plug the airflow that much. Still no go? I'd recommend looking hard at
replacing the radiator. If it is the original, it is overdue for developing
cracks in the header anyway.

Mike

Michael Pardee

"Will" <wrichards2005@msn.com> wrote in message
news:1157266279.331255.237380@e3g2000cwe.googlegro ups.com...
>I have a 91 Accord, auto. It will not stop overheating. I've switched:
> the front temp switch, the coolant temp sensor, adjusted timing,
> flushed it, put in new coolant twice, put in new thermostat (even took
> it out at this point, still overheats). The only things I haven't done
> are: the rear temp switch, water pump, and radiator.
>
> When I start driving it, it will run normally for about 10-25 minutes.
> After its warmed up with the temperature about halfway, it will stay
> that way for another 5-8 min. Then it gets to about 2/3 of the way on
> the gauge and will stay that way for another 5-8 min. After that, it
> will progressively get hotter (which I never let it do). If I turn the
> heater on, it will cool the engine from 3/4 temperature, all the way
> down to 1/2 way at Normal operating temperature, and eventually will
> climb back up to 2/3 of the way. Anyone got any suggestions?
>
Although I would not rule out a bad head gasket out of hand, I am in the
camp that feels the radiator isn't getting rid of the heat. From what you
describe coolant flow is okay.

I am with Joe - make sure the radiator fan is running. If that's okay, take
a hose with a squirt nozzle and spray from the backside of the radiator to
the front, then from the front to the back. Sometimes dirt and bugs will
plug the airflow that much. Still no go? I'd recommend looking hard at
replacing the radiator. If it is the original, it is overdue for developing
cracks in the header anyway.

Mike