Honda Car Forum

Hi,
I have a 95 honda civic.
I had my temp spike up suddenly once in a while... 2 months later my
radiator broke down. I had the radiator changed. car drove ok for a week or
so then started spiking up on heat.... going to max. The only way i could
control it is by turning on the interior heater to max. as i turn heater to
max the temp begins to climb back. Then i changed the thermostat (drained
fluid). It ran a little better..... less spikes. But now it's almost
predictable.

if i drive on highway wihtout turning on my interior heater the heat will
climb to max. again i have to turn on heater to max to cool it down to
normal (half way).

I really need help to suggest me what could this be?? The fan is working
when i short the wire going to temperature switch. Also if the temp goes up
3/4th i do see the fan running.

anyone with ideas?? I am dreaded that i may need to run heater during
summer.

help me pls.

shamNOSPAMsdewan AT hotmail DOT com

You probably have an air bubble in your system. It could be in your
heater core, and those bubbles take a while to dissipate, if ever.

Try running the engine stationary at a couple of K RRM with the
radiator cap off. Watch the temperture, because you don't want
overheating. When you see the coolant level drop, add more coolant.
Eventually you will hear a distinct burb, signalling that th air bubble
came out.

Hope that's it
Remco

Latitude Wizard wrote:
> Hi,
> I have a 95 honda civic.
> I had my temp spike up suddenly once in a while... 2 months later my
> radiator broke down. I had the radiator changed. car drove ok for a week or
> so then started spiking up on heat.... going to max. The only way i could
> control it is by turning on the interior heater to max. as i turn heater to
> max the temp begins to climb back. Then i changed the thermostat (drained
> fluid). It ran a little better..... less spikes. But now it's almost
> predictable.
>
> if i drive on highway wihtout turning on my interior heater the heat will
> climb to max. again i have to turn on heater to max to cool it down to
> normal (half way).
>
> I really need help to suggest me what could this be?? The fan is working
> when i short the wire going to temperature switch. Also if the temp goes up
> 3/4th i do see the fan running.
>
> anyone with ideas?? I am dreaded that i may need to run heater during
> summer.
>
> help me pls.
>
> shamNOSPAMsdewan AT hotmail DOT com
>
sounds like you have a coolant leak. check all your hoses and if
necessary, the water pump "weep" hole. my crx was losing coolant
because the water pump seals had gone.

"jim beam" <nospam@example.net> wrote in message
news:1111760916.57aa6fbaa2b9a80cf65832a9e9943236@t eranews...
> Latitude Wizard wrote:
> > Hi,
> > I have a 95 honda civic.
> > I had my temp spike up suddenly once in a while... 2 months later my
> > radiator broke down. I had the radiator changed. car drove ok for a
week or
> > so then started spiking up on heat.... going to max. The only way i
could
> > control it is by turning on the interior heater to max. as i turn
heater to
> > max the temp begins to climb back. Then i changed the thermostat
(drained
> > fluid). It ran a little better..... less spikes. But now it's almost
> > predictable.
> >
> > if i drive on highway wihtout turning on my interior heater the heat
will
> > climb to max. again i have to turn on heater to max to cool it down to
> > normal (half way).
> >
> > I really need help to suggest me what could this be?? The fan is
working
> > when i short the wire going to temperature switch. Also if the temp
goes up
> > 3/4th i do see the fan running.
> >
> > anyone with ideas?? I am dreaded that i may need to run heater during
> > summer.
> >
> > help me pls.
> >
> > shamNOSPAMsdewan AT hotmail DOT com
> >
> sounds like you have a coolant leak. check all your hoses and if
> necessary, the water pump "weep" hole. my crx was losing coolant
> because the water pump seals had gone.
>

I have to agree, you never mentioned replacing the water pump. If you have
at least 100k miles it's time to replace the water pump.