so hows the X when it comes to the heat 100+? anyonw here in AZ and have an X? reason why i ask is because im going to AZ to visit my sister and i wanna take the X but its like going to make the car feel sluggish, ill take the beater. seeing that the engine gets really really hot as it is, will it be a problem? Recently took a 2.5hr trip up the coast in stop and go traffic and 95+ heat and it looks like the X was going to die. It idles pretty rough but never did stalled. The fan also came on a couple of times and stayed on after the car was off and i wont be taking it easy while driving there too

 

have you had the car flashed? i think there is a factory reflash that fixes some issues with new Xs

 

the idling things fine. i can deal with that. i think its normal. it does it when the fan is about to come on. but im saying when your out in the heat for along period of time. just want to know how it would react to extreme heat. the car doesnt need a reflash, vin is after the 4xxxx.

 

2-3 weeks ago I drove from Los Angeles to Mexico. The weather was maybe 85-95 in Los Angeles, while getting closer to the border it was about 105+.

I noticed nothing different in the car, idled the same, same power, fan didn't come on after shutting off (but it does come on on cooler days..)

But yeah, it was all good!

 

Only thing I notice in the heat is a loss of power and the A/C compressor shuts off only to come on 5 seconds later. Your idling issue is probably sue to the A/C working overtime.

 

Make sure it has the latest reflash since power above 5k RPM is where it really gets sluggish. Consider leaning out the radiator fluid a bit so that it's 50/50 or 60 water/40 coolant and then add Redline Water Wetter for some added cooling capacity and better thermal transfer from the head.

I ended up draining some coolant and adding in filtered water in it's place and used a tester to verify the density and freeze/boilover points. Seems that the factory usually adds in a bit too much coolant which is great if you need freeze protection down to -40 F but it's not going to have the same cooling capacity as a mixture with more water in it. The lower boiling point should never be an issue as long as everything remains pressurized as the more water you use the better heat will transfer.

 

its so hot here in phoenix ur going to wish it had a better a\c. make shure u tint the windows 1st.

 

since ur in az fill half of ur radiator fluid wid anit/water and then rest with just redlines water wetter.. it'll help..

 

I'm moving to Az next year. This is gonna be fun.

 

If you have an open cone filter then the AC kicking on can disrupt the idle a bit as the hot air gets forced into the MAF & Intake Temp sensors. The fix is to get some sort of heat shield in there so that the AC fans can't blow directly on the cone filter.