RRC Heater problems...HELP!

A

Alun P

Guest

• Nov 11, 2004

• #1

RRC 3.9

Noticed a heater problem now that the weather has started to turn
cold.

Engine runs up to working temperature with no problems with temp guage
sitting just under half way, but the heater blows cold air unless I bring
the engine revs up.

Leave the engine at idle and I lose all heating and the heater blows cold,
rev the engine and the heat returns.

Water levels checked and ok with no leaks anywhere.

Seems there is not enough flow of hot water, could it be water pump,
sticking thermostat or air lock ????

Any ideas or thoughts would be appreciated, thanks

AlunP

 

L

Larry

Guest

• Nov 11, 2004

• #2

I have a permanent heater problem, comes with the territory of a series
motor. Driving off this morning was like getting into a cold bath. I don't
see how my heater is ever going to do anything much as the engine never gets
warm enough.


--
Larry
Series 3 rust and holes


"Alun P" <alun.priddle@NOSPAMblueyonderDOTcoDOTuk> wrote in message
news:[email protected]...
> RRC 3.9
>
> Noticed a heater problem now that the weather has started to turn
> cold.
>
> Engine runs up to working temperature with no problems with temp guage
> sitting just under half way, but the heater blows cold air unless I bring
> the engine revs up.
>
> Leave the engine at idle and I lose all heating and the heater blows cold,
> rev the engine and the heat returns.
>
> Water levels checked and ok with no leaks anywhere.
>
> Seems there is not enough flow of hot water, could it be water pump,
> sticking thermostat or air lock ????
>
> Any ideas or thoughts would be appreciated, thanks
>
> AlunP
>

 

A

Alan Mudd

Guest

• Nov 11, 2004

• #3

I had a similar problem in my old 3.5Efi, turned out the matrix was blocked,
in my case by a previous oner having used a rad weld type material.

Although mine eventually produced almost no heat whatsoever no matter what
type of driving.

Pig of a job to replace, most of the dash has to come out but it has to be
done.


Muddy


"Alun P" <alun.priddle@NOSPAMblueyonderDOTcoDOTuk> wrote in message
news:[email protected]...
> RRC 3.9
>
> Noticed a heater problem now that the weather has started to turn
> cold.
>
> Engine runs up to working temperature with no problems with temp guage
> sitting just under half way, but the heater blows cold air unless I bring
> the engine revs up.
>
> Leave the engine at idle and I lose all heating and the heater blows cold,
> rev the engine and the heat returns.
>
> Water levels checked and ok with no leaks anywhere.
>
> Seems there is not enough flow of hot water, could it be water pump,
> sticking thermostat or air lock ????
>
> Any ideas or thoughts would be appreciated, thanks
>
> AlunP
>

 

A

Austin Shackles

Guest

• Nov 11, 2004

• #4

On or around Thu, 11 Nov 2004 06:42:45 GMT, "Alun P"
<alun.priddle@NOSPAMblueyonderDOTcoDOTuk> enlightened us thusly:

>RRC 3.9
>
>Noticed a heater problem now that the weather has started to turn
>cold.
>
>Engine runs up to working temperature with no problems with temp guage
>sitting just under half way, but the heater blows cold air unless I bring
>the engine revs up.
>
>Leave the engine at idle and I lose all heating and the heater blows cold,
>rev the engine and the heat returns.
>
>Water levels checked and ok with no leaks anywhere.
>
>Seems there is not enough flow of hot water, could it be water pump,
>sticking thermostat or air lock ????
>
>Any ideas or thoughts would be appreciated, thanks

try the trick I've used a few times, reverse the flow through the matrix.
buggered if I know why it works, but it does.

 

J

Jack Kerouac

Guest

• Nov 12, 2004

• #5

"Austin Shackles" <[email protected]> wrote in message
news:[email protected]...
>
> try the trick I've used a few times, reverse the flow through the matrix.
> buggered if I know why it works, but it does.

It seems that it would un-stuck everything in the heater matrix and send it
back to the main radiator. If its constantly getting gunked up one way...why
not reverse flow it like a back flush. I see the logic.

 

7

737 FLF

Guest

• Nov 12, 2004

• #6

On the other hand you may just have an air-lock.
"Alun P" <alun.priddle@NOSPAMblueyonderDOTcoDOTuk> wrote in message
news:[email protected]...
> RRC 3.9
>
> Noticed a heater problem now that the weather has started to turn
> cold.
>
> Engine runs up to working temperature with no problems with temp guage
> sitting just under half way, but the heater blows cold air unless I bring
> the engine revs up.
>
> Leave the engine at idle and I lose all heating and the heater blows cold,
> rev the engine and the heat returns.
>
> Water levels checked and ok with no leaks anywhere.
>
> Seems there is not enough flow of hot water, could it be water pump,
> sticking thermostat or air lock ????
>
> Any ideas or thoughts would be appreciated, thanks
>
> AlunP
>

 

A

Alun P

Guest

• Nov 12, 2004

• #7

As there is some water getting to the matrix I think I will take off a hose
and 'flush' the system from the water fill 'stand pipe'and see what comes
out!!!!

Failing that, try and suss out which way the water flows and try a back
flush, works on a home central hearting system!!!!

Thanks

AlunP