Radiator cooling

ASAD ABDULLAH KAMBOH

MEMBER
2008 NISSAN ALTIMA
2.5L
4 CYL
2WD
AUTOMATIC
80,000 MILES

Hello Alex,

I hope you are doing great. I had solved the problem of oil leaking thank God! But now I am experiencing another issue. My car temperature gauge deflects a lot. When I turn A/C it gets low when I turn it off it goes up. One day it also burst my radiator. I changed it with a new one but the fluctuations are not solved. One day when the gauge was trying to rise I opened the hood and saw the both of the fans not working. But once I turned the A/C on the both fans got activated pulling the gauge down. I don't know if this is by company or what? I also don't know what to do. Please help?

3 Replies

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello again,

Well this is definitely by design, but that's not saying that there is not a problem here. By design, when the A/C comes on, both fans are designed to come on because of the extra load that is placed on the engine by having the A/C compressor's clutch engaged and having to spin the compressor. But when the Engine Coolant Temperature [ECT] gets to a certain temperature one of the fans should kick on until the temperature of the engine comes down to a predetermined temperature and then kick off. It's this function that we are worried about. In the diagrams down below I have included the diagnostic troubleshooting guide for your vehicle's engine cooling fans. Please do the steps that say "without consult III". Please go through this guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros

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Friday, November 29th, 2019 AT 4:14 PM

ASAD ABDULLAH KAMBOH

MEMBER
8 POSTS

Can you please send me the link from where you got this? This way I can see the pattern of your post more organized.

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Saturday, November 30th, 2019 AT 3:44 AM

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello,

Unfortunately there is no link to where I got the guide from, but it is posted in order. Like I said in the last post, please just use the bottom directions on every number, it will say "without consult-III". So for each number on the guide there will be instructions for "with consult-III" and then under that "without consult-III". Forget about "with consult-III" and only do the without consult-iii for each number. I hope this helps.
Thanks,
Alex
2CarPros

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Saturday, November 30th, 2019 AT 5:42 AM