Hyundai Forums banner
1 - 10 of 10 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter · #1 ·
All the sudden AC will stop blowing cold and engine temp will start rising but radiator doesn't seem to heat up. Will correct itself after about 10 minutes. 3.3L 130,000 miles
 

·
Registered
Joined
·
3 Posts
Discussion Starter · #2 ·
UPDATE: keep car home with me today tried to recreate problem. Left idling AC on after about 15 minutes started to run hot temp needle at edge of red. Took car on drive needle went into red then immediately dropped back to halfway. AC never stopped blowing cold. Coolant fans seem to be working can hear them cycle between high and low speed.
 

·
Registered
Joined
·
17,552 Posts
Repair the reason for the low coolant in the main cooling system to stop the overheat,, which in turn shuts down the A/C... coolant temp seen by PCM causes PCM to cancel the firing of the A/C relay to run the compressor..

Look at your upper and lower radiator hoses where they both meet joints at rear of engine, both will show signs of leakage/green crud growing out.. remove hoses, clean the joints, and typically best to up and replace the hoses and use (4) #20 hose clamp when re-assemble, then refill coolant.
 

·
Registered
Joined
·
7,163 Posts
If your coolant level appears to be correct, and ignoring the A/C for a moment (it shuts down if the engine is 'hot') ... any chance you're dealing with something simple like a sticky thermostat? At 130K miles, it wouldn't be surprising.
 

·
Registered
Joined
·
3 Posts
Discussion Starter · #5 ·
Figured I would flush coolant and replace thermostat. Trying to figure out where it's at. Where top hose attaches to housing? Where housing attaches to engine? Do you know where I can look up diagram, directions?
 

·
Registered
Joined
·
7,163 Posts
Thermostat sits under upper hose inlet to engine as one would expect, yes. Remove the housing (aka "Water inlet fitting) (3 screws), and you will find the thermostat underneath.

As for pictorial info, we always recommend setting up an account at www.hmaservice.com.
 

·
Registered
Joined
·
17,552 Posts
Thermostat sits under upper hose inlet to engine as one would expect, yes. Remove the housing (aka "Water inlet fitting) (3 screws), and you will find the thermostat underneath.

Wrong info... Thermostat is located where lower hose meets joint (3) 8mm bolt hold cover in place..

The small housing at cross over pipe with upper radiator hose attached is free flowing return to engine.
 

·
Registered
Joined
·
17,552 Posts
??? We talking the 3.3? "Water inlet fitting" (see item 5 in pic) is even Hyundai's lingo for it.
Forgive me for it appears I mis-interpreted your previous post.. been long boring day today.. I read it a bit fast, and as they say,,, Reading Is Fundamental... I owe you one somewhere




Your pic is correct for the 3.3, the 2.7 is similar in operation..
 

Attachments

·
Registered
Joined
·
7,163 Posts
You owe me nuthin', sbr. You catch me screwing up now and again for real, and we need someone here who does this more than I do to keep me honest!

Wish I knew what part of the universe your shop was in. It'd be me buying you a beer!
 
1 - 10 of 10 Posts
Top