A/C blowing hot air

[GS608]

My fairmont seems to have a mind of its own on auto, it will blow cold air for a while then randomly start blowing really hot air to the point where its cooler outside then when its idling it will start blowing cold air again.

what could be the cause of this? i thought that it might need topping up but wouldn't it blow any cold air at all if that was the case?

edit:

crap sorry i posted it in the wrong section, could someone please move it?

[galaxy xr8]

Sounds like it might be low on gas, get it checked and go from there, mine did this at one stage and that's all it was.

[TE029]

Strange question but does it only blow hot air on heavy load/throttle ?
It is prob. the inlet manifold gasket leaking if so, mine did some really strange things due to lack of vacuum when the gasket was leaking hey presto all fixed after replaced the gasket.

[Umineko]

Try putting the climate control into diagnostic mode and see what error code it spits out, I had a similar problem a few years ago turned out to be the motor that drove the mixer door that blended the hot and cold air was shot and kept sticking, one minute you'd get cold air next you'd get hot. Also try cleaning out the internal temp sensor in the side of the climate control module (pipe adjacent to the clock) sometimes this gets a build up of dust and crap which causes false readings

[brad`]

i know if i have the heater on in mine it blows cold out top and hot out the bottom.. might be same problem just yet to get it checked

[5.0 ED]

Had an issue with mine where it would be either full on hot or full on cold. Did the reset on it, all good now.

[qldwagons]

probablly a faulty orifice tube they fill up with crap
(quote from trade magazine )

AU Ford Falcon
intermittent aircon
fault
AU Falcon, 1998-2002, 6 cylinder
Complaint
Air conditioning intermittently not
working. Owner reported that he
could re-activate system
by turning vehicle off and then restarting.
Problem Summary
Checking and extracting
fault codes found code
P1463 – A/C pressure
insufficient charge/
transducer.
Diagnostic Sequence
Check A/C system
refrigerant gas pressures,
found to be OK. Degassed
system, had correct gas
amount.Removed the
accumulator and measured
oil amount. Remove and inspected orifice
tube. Orifice tube 50% blocked with debris.
Fault Description
As vehicles are getting older, faults
highlighted through fault codes can often
be the end result of underlying problems.
In this case a block orifice tube and slightly
contaminated system shut the system down.
Fault Solution
Replacement of A/C Orifice tube, TX2621
(orange), Accumulator RD2809 and the
Ford transducer switch PS4652, added oil
and system serviced. Performance tested OK.
Tip
When a fault code is logged in a system,
always think of possible problems or
causes that might affect an electronic
components operation.

if this is the case you will by law need it repaired by an approved aircon workshop
as its now illegal to do just regas the system without fixing the fault

[RHR]

Apologies for bring up an old thread but does the engine temperature have anything to do with the AC operation. Reason I ask is because when I'm on the freeway with my AU2 the AC works well. As soon as I head up a bit of a hill whilst still maintain the same speed whilst not kicking down a gear it cuts out and it wont come back on for a few mins. Its not just its normal cycling either as the cabin temp heats up pretty quickly.

It will also play up when doing stop start driving in traffic. Was thinking of changing the thermostat to a cooler one. Currently theres a 92 degree one in it.

[Spurious]

Originally Posted by RHR

Apologies for bring up an old thread but does the engine temperature have anything to do with the AC operation. Reason I ask is because when I'm on the freeway with my AU2 the AC works well. As soon as I head up a bit of a hill whilst still maintain the same speed whilst not kicking down a gear it cuts out and it wont come back on for a few mins. Its not just its normal cycling either as the cabin temp heats up pretty quickly.

It will also play up when doing stop start driving in traffic. Was thinking of changing the thermostat to a cooler one. Currently theres a 92 degree one in it.

Don't troll old threads. Start a new one if you have issues.
You really don't need look anywhere past the first page when viewing thread lists, unless you're looking for a specific bit of info that you know was previously posted.
If you post a thread & pose a question that has previously been discussed, someone will paste a link on your post so you can view an old post...if there is one.

[superroo]

My understanding/memory, on low series no.
On high it's only the heater that uses eng temp to delay turning on.
Even then the switch on point is really low, so I doubt it could get cold enough to turn off.

Your problem sounds more like A/C gas being low

[RHR]

Superroo thanks for your reply. Off to the Air con bloke I go

[Road Games]

Originally Posted by Spurious

Don't troll old threads. Start a new one if you have issues.
You really don't need look anywhere past the first page when viewing thread lists, unless you're looking for a specific bit of info that you know was previously posted.
If you post a thread & pose a question that has previously been discussed, someone will paste a link on your post so you can view an old post...if there is one.

Yeh naaaaah ... my AU has similar problems where is this ingestation of leaves coming from ?

Anyone got a pic ??

The fan is now chewing something and i don't know how to pull whatever apart to fix it ???

[superroo]

Shows what to remove to clean the leaves out

http://fordforums.com.au/showthread....93#post5311193

[Road Games]

Superroo i owe you a beer mate .. bloody beauty thanks a lot !