[US4tuner]

So long story short the car was running really cold and would never heat up.

Replaced the stuck open 160 degree fail safe type thermostat with a regular 180 degree thermostat.

All was good for a while.

Now....with more use of the AC since its been hot outside the car reaches 230 degrees and will not go down!

I noticed only one fan turns on....the other fan doesn't even turn on with it at 230 degrees or slightly higher than 230! When is the second fan suppose to engage?

On my other Srt4 with the Diablo tune both fans turned on......this was pretty ideal to cool down quick!

Is this a water pump issue now? 😳

 

[gargoile]

Do you still have the old thermostat? I would go back to the old one or a new 160 deg stat and see if this resolves your issue. If this does, then the 180 deg stat is the issue.

Just because a item is new, doesn't mean it will work.

 

[AlmightyFork]

Seems like a normal temp for a hot day in stop and go traffic with the air conditioner going. Does is go down at expressway speeds?

 

[JmalB]

Shouldn't the 2nd fan turn on when the A/C is on? I don't normally see more than 210 on a hot day in stop and go.

 

[AlmightyFork]

Another thread says to check the radiator cap and to bleed the system - over heating to 230 degrees!

 

[US4tuner]

I tried bleeding the system via the nipple on the housing near the thermostat. But it was fine....just a smooth stream of coolant. I don't remember if I had the heater on and warmed up.

Months later since its been parked in this hot weather I then ran the heater on and it finally brought the Temps down and all seems normal now. But I haven't driven it since to see if that fixed it. I just left it on parked for a while and it seemed fine. I was so relieved to see normal Temps in the middle or maybe slightly under the middle! But what's the deal with the other fan not coming on?

I may try and bleed it again making sure I note the heater is on and its warmed up. Will update once I drive it again. Is there a fix to reducing the AC clutch engagement? It feels crazy loud when it engages and seems the engine wants to cut off for a moment.

Next on the list is the serpentine belt. Or atleast the one that goes around the AC clutch one. It has a small tear on one side. 😢 Probably from that crazy AC clutch engagement.

 

[smol turbo]

any resolve? my 04 still does this in stop and go traffic. reaching temps around 220. fans work. although its hard to tell when my high fan is kicking on. i think its time for a DSP

 

[AlmightyFork]

any resolve? my 04 still does this in stop and go traffic. reaching temps around 220. fans work. although its hard to tell when my high fan is kicking on. i think its time for a DSP

220 is fine. Everyone would do well to remember that water boils at 212 degrees. You want the condensation in your oil to evaporate.

 

[US4tuner]

So far so good. But seems when I run the AC, the engine Temps rise a bit. Sounds like it should be the opposite?

 

[AlmightyFork]

So far so good. But seems when I run the AC, the engine Temps rise a bit. Sounds like it should be the opposite?

Not in my experience. AC adds load which can lead to overheating.

Edit: Remember, an air conditioner adds heat to any system (which is why they are installed outside or in a wall). If you left your freezer open all day, you would not cool down your house. You would heat it up.

 

[US4tuner]

Makes sense, thanks!