80 Series A/C Shut Down
Submitted: Wednesday, Jan 24, 2007 at 15:00
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Matt(WA)
Hi All,
I have a bit of a drama with my 80. Its a 4.2 Diesel N/A,, 5speed. Just returned to
perth from
melbourne and
sydney. We were pretty loaded up and when it was hot the car temp gauge would move up a little to be inline with the top of the petrol warning light for the sub tank. So bugger all. But when the car warmed up the ac stopped working. As soon as I changed back to third or even fourth and bought the rev's up the temp started to come back down again. Thought the A/c would take a while to restart if you didnt turn it off and back on again. Any idea's? I think there must be some kind of thermal cutout in the ac system. Also maybe I am up for a new viscous clutch for the fan? Any help would be appreciated.
Cheers
Matt
Reply By: Member - John L G - Wednesday, Jan 24, 2007 at 15:05
Wednesday, Jan 24, 2007 at 15:05
Hi Matt
The 75 series with the same engine, 1HZ, displays the same characteristics.
If the temp gauge starts to climb the A/C shuts down or ceases to work properly.
Have no idea why, but doesn't seem to be any real problem as when the engine temp comes back to normal, the cold air starts to flow again.
AnswerID:
217485
Reply By: Max - Sydney - Wednesday, Jan 24, 2007 at 18:07
Wednesday, Jan 24, 2007 at 18:07
Matt
I have had the same model for 10 years now, and under no circumstances can I get the temperature needle to move upward. That includes 45 degrees plus heat pulling a van at the speed limit.
With your symptoms, I'd be getting someone to at least pressure flush the cooling system, replace the thermostat and
test the viscous clutch (which despite what the
Gregory's service manual says can be refilled with silicone) and see if that helps. I'd be prepared to be told that the radiator core is stuffed though - these beasts are getting pretty long in the tooth now and with all the radiator additives in the world eventually the radiator has to go.
But the back flush etc is a good start.
Keep us informed what happens
Max
AnswerID:
217533
Reply By: Big Woody - Wednesday, Jan 24, 2007 at 21:05
Wednesday, Jan 24, 2007 at 21:05
Hi Matt,
I had exactly this problem a short time ago in my 80 series 1HZ Diesel with aftermarket turbo.
My temp always sits about a needle thickness below half on the guage and never moves.
On a trip to
Rockhampton and back with a tandem car trailer and a car on it my a/c cut out and 5 minutes later it started again. It took some time to realise that it was related to my temp guage fluctuating. Whenever it hit halfway on the guage which is only about 2mm higher than where it normally sits, the a/c would cut out.
As mentioned above
mine turned out to be the viscous fan hub. It started like this and only played up intermittently but using a process of elimination I isolated it to the viscous hub.
I fitted an aftermarket hub from Rawlinson's Toyota Specialist for $110.00 and have done some very heavy towing in hot weather since and have had no more problems. And that includes long highway runs in hilly country where the turbo has really been working hard. All of these
miles I have had the A/C turned on and it has never cut out since. I was not keen on drilling holes in the original hub and filling it with more silicone and a genuine toyota hub was $185.00.
I hope this helps mate.
Cheers,
Brett
AnswerID:
217583
Follow Up By: Matt(WA) - Thursday, Jan 25, 2007 at 11:44
Thursday, Jan 25, 2007 at 11:44
Hi Brett
Do you have any contact details for Rawlinson's?
Cheers Matt
FollowupID:
478124
Follow Up By: Member - Davoe (Nullagine) - Thursday, Jan 25, 2007 at 11:52
Thursday, Jan 25, 2007 at 11:52
you dont have to drill holes in it lust take it apart (about 7 screws with an impact driver) My investigation had Gen toyota hubs at alot more than $185
FollowupID:
478128
Follow Up By: Big Woody - Thursday, Jan 25, 2007 at 19:40
Thursday, Jan 25, 2007 at 19:40
Hi Matt,
Sorry I had a moment with my brain and misquoted the name of the supplier. They are called Rawnsley Auto's and they are a local spare parts supplier specialising in Toyota's here in
Bundaberg.
They are a long way from you in W.A. though but if you are interested their phone number is (07) 4151 6011
Generally I have found their prices to be equal to or better than any other source for spare parts including ebay by the time you add postage to your purchase.
Cheers mate,
Brett
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