Pajero Heater

I have a 1991 Pajero on which the heater has stopped working. I didn't
need it through the summer (used just air conditioning which is still
fine), and now its colder I find the heater is not doing anything. The
thermostat would seem to be OK as the temperature guage is where it
should be and the matrix does not have an air lock. Have also checked
visible fuses behind the dahsboard.

Any suggestions?

"Leigh Hunt" <[email protected]> wrote in message
news:[email protected]...
> I have a 1991 Pajero on which the heater has stopped working. I didn't
> need it through the summer (used just air conditioning which is still
> fine),

So we can assume that the fan is working. The heater does not have any
fuses, it uses coolant from the radiator for heat.

Could be several things:
a) the heater core is blocked: drain you coolant and put a water hose on to
the core inlet, and then outlet to dislodge the build up of sludge.
b) one of the heater hoses has collapsed. Give them a squeeze, and if they
are soft and pliable, replace them. See a) above while you are at it.
c) the temp setting on the dash connects to a simple valve that restricts
coolant flow through the core. Check if this control is actually turning the
valve.

Stewart DIBBS
www.vysor.com/lancerproject

"Leigh Hunt" <[email protected]> wrote in message
news:[email protected]...
> I have a 1991 Pajero on which the heater has stopped working. I didn't
> need it through the summer (used just air conditioning which is still
> fine), and now its colder I find the heater is not doing anything. The
> thermostat would seem to be OK as the temperature guage is where it
> should be and the matrix does not have an air lock. Have also checked
> visible fuses behind the dahsboard.
>
> Any suggestions?

this problam can be caused by the blower motor giving up the ghost.

rhys

Hi,
try this links http://www.pocuk.com/ U.K. Pajero Owners Web
site(10.000 members) all info is free with no need to even register.

Regards
Reid (Plunkster)
1991 Mk2 2.5Tdi Auto Blue over Silver


"Leigh Hunt" <[email protected]> wrote in message
news:[email protected]...
> I have a 1991 Pajero on which the heater has stopped working. I didn't
> need it through the summer (used just air conditioning which is still
> fine), and now its colder I find the heater is not doing anything. The
> thermostat would seem to be OK as the temperature guage is where it
> should be and the matrix does not have an air lock. Have also checked
> visible fuses behind the dahsboard.
>
> Any suggestions?

Thanks for the suggestions - The fan seems to be working well, it just
blows cold air and there doesn't seem to be anything on POC. any more
ideas gratefully received as I'm freezing

Leigh

[email protected] (Leigh Hunt) wrote in
news:[email protected]:

> Thanks for the suggestions - The fan seems to be working well, it just
> blows cold air and there doesn't seem to be anything on POC. any more
> ideas gratefully received as I'm freezing
>
> Leigh


Disclaimer: Not a gear head. Not even close.

Chance the fan clutch is defective? - constantly engaged. With the engine
cold and OFF, shouldn't you be able to spin the fan faily easily? And
when you start in the morning, fan should not be spinning full force I
would think.


And of course, the posibility the in-vehicle hot/cold air mix adjuster is
not working.

On Tue, 11 Nov 2003 15:56:59 GMT, Al Bundy <[email protected]>
scribbled:

>[email protected] (Leigh Hunt) wrote in
>news:[email protected]:
>
>> Thanks for the suggestions - The fan seems to be working well, it just
>> blows cold air and there doesn't seem to be anything on POC. any more
>> ideas gratefully received as I'm freezing
>>
>> Leigh
>
>
>Disclaimer: Not a gear head. Not even close.
>
>Chance the fan clutch is defective? - constantly engaged. With the engine
>cold and OFF, shouldn't you be able to spin the fan faily easily? And
>when you start in the morning, fan should not be spinning full force I
>would think.

I think everyone is referring to the in-cab heater/blower fan assembly
which is behind the dash board. The actual engine fan has nothing to
do with the heating fan.

--
Phillip Weston
Taumarunui, New Zealand

Remove the obvious spamblock to reply via e-mail.

Phillip Weston <[email protected]> wrote in
news:[email protected]:

> On Tue, 11 Nov 2003 15:56:59 GMT, Al Bundy <[email protected]>
> scribbled:
>
>>[email protected] (Leigh Hunt) wrote in
>>news:[email protected]:
>>
>>> Thanks for the suggestions - The fan seems to be working well, it
>>> just blows cold air and there doesn't seem to be anything on POC.
>>> any more ideas gratefully received as I'm freezing
>>>
>>> Leigh
>>
>>
>>Disclaimer: Not a gear head. Not even close.
>>
>>Chance the fan clutch is defective? - constantly engaged. With the
>>engine cold and OFF, shouldn't you be able to spin the fan faily
>>easily? And when you start in the morning, fan should not be spinning
>>full force I would think.
>
> I think everyone is referring to the in-cab heater/blower fan assembly
> which is behind the dash board. The actual engine fan has nothing to
> do with the heating fan.
>
> --
> Phillip Weston
> Taumarunui, New Zealand
>
> Remove the obvious spamblock to reply via e-mail.


> The actual engine fan has nothing to do with the heating fan.

No but it has to do with the collant going past the fan.

>>> The fan seems to be working well, it just blows cold air

He mentioned the in-cab is working. What I was referring to is a
possibility where the thermostat is good and the coolant is properly
circulating. The engine fan cools the radiator fluid and operates based
on temperature. If the engine fan clutch goes bad while the fan is
engaged, it constantly over-cools the fluid.

....unless it's electric, then no fan clutch.

....then there's the added "StopLeak" syndrome that plugs up the heater
core