AC Cars & Trucks - Recent Questions, Troubleshooting & Support


First make sure you have a thermostat at the upper hose ?next is the temp control numerical or dial or lever controlled if atc that's behind the dash it might have gone bad but also the blend door might be stuck some grease will help and also a broken cable or vacuum dash pot is a possible suspect now back to the thermostat is your temperature gauge showing that your engine is warmed up and while driving does it drop rapidly to cold if yes there's no thermostat if no go to the heater hoses and feel them are they the same temp or is one cooler if cooler heater core is N/G or clogged did anyone ever put stop leak in if so this is the problem after we have eliminated the easy stuff go inside the vehicle and drop the glove box and observe the blend door movement the heater case is operated by cables vacuum and electrical voltage clean all connections check for vacuum leaks and broken cables and fuses you must understand that I'm not there to check myself so you must do the process of eliminating the possible causes of this till you get to the problem cause and all these things have a part in the heating system //// hot antifreeze thats circulating through the whole system ///proper vacuum ///clean electrical connections and greased working cables///vacuum related lines and dash pots they look like flying saucers with a vacuum port on top and the actual temperature controller and like I said before I'm not there so I have to tell you everything good luck stephen

AC Cars & Trucks | Answered on Dec 11, 2017


get the service and repair manual from the given link and fix the problem without the help of a mechanic and save your money http://toolsnyou.com/

AC Cars & Trucks | Answered on Dec 11, 2017


AC is likely to be the alternating current supply from the transformer.

I suspect two pairs of AC terminals are provided to allow one of two different chimes to be selected with one pair and the common being used for the 4 chime pattern and the other pair and common used for the 8 chime pattern.

The front, side and rear terminals are self explanatory connections from each bell-push with the supply (or return) or other wire from each bell push connected to the COM or common.

The manufacturer's website doesn't feature a wiring diagram though might send you an instruction book on demand. The site does include a note specifying only 18 gauge wire is to be used...

AC Cars & Trucks | Answered on Dec 11, 2017


Tell us the year, make, model, engine and we can look up the code. This is a manufacturer specific code. Without that missing info, no help

AC Cars & Trucks | Answered on Dec 02, 2017


Sometimes the system will reset if you pull out the hvac fuse, wait a while, and put it back in. If not, the blend door actuator will have to be checked.

AC Cars & Trucks | Answered on Nov 17, 2017


get the service and repair manual from the given link and fix the problem http://toolsnyou.com/

AC Cars & Trucks | Answered on Nov 17, 2017


and the mystery vehicle is?

AC Cars & Trucks | Answered on Nov 12, 2017


What make , model an year vehicle ? Most of these circuit's are computer controlled . When you press the A/C button it send's a input to the PCM/ECM - engine computer which will energize or turn on a relay that turns on the compressor clutch . Looking at a wiring diagram to see what is involved in the circuit is the way to diagnose .

AC Cars & Trucks | Answered on Nov 12, 2017

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