Thread: Need Help, car running hot!!

On my Altima SER. The temp stays fine while the ac is not on but once I turn the ac on, it starts running hot, sometimes faster then others.

One of my stock fans was not working, so i changed some slims in and its still doing the same thing. Anyone with more expereince in this subject have any ideas?
Thanks

if you are sure your fans are working, try a new radiator cap. OEM Nissan (witch i recommend)

thermostats? there are 2 of them iirc

Originally Posted by theotherspecv

thermostats? there are 2 of them iirc

If it was the T stats would make it run hot always, (QRs have 2 t stats VQ not sure)

Yes im sure the fans are working, I just don't understand why its only when the ac is on.

How does the coolant look? Cap would be a good start as it may be opening at a lower temp than it should.

thats why i said t-stats. the car moving might be enough to cool it down but when the load is put on it cant keep up. sounds like something simple/stupid, always is.

ill check it out, i think the vq only has one though
thanks

Check ur rad cap , check ur t stats, also make sure u are putting recommended coolant ( 50/50 OR DEXCOOL), now u may also need to check ur heater core bypass hose and also clean out your heater core ...... Important question , was the car ever in a front accident ? If so the collision center u took the car to might have used a cheap radiator (cardboard guts) nooooo gd clogs the radiator hoses .....

better description, is your temp guage bouncing around and saying its overheating? or if coolant is low, then air is in your system. otherwise, if your turning on ac, and it starts overheating while your fans work, have you serviced the ac recently? or at all? maybe you have a clog or leak in ac system. start looking for green crap on the lines, green crap could be coolant or ac fluid. this is assuming you have good oil and coolant levels.