youre right guys, it turns out that i didnt have any problem with the fans, the modules or the circuit, it's just a low refrig level.
The car runs normal again now, big thanks to you guys.
plus the hesitation problem is also been taken care of, it turns out that what's been causing my car to hesitate on start up and having a poor fuel economy is these two culprits:
1. a leaking vacuum hose to the fuel pressure regulator
2. a leaking ignition wire

i'm gonna document my findings and post it on another thread to help other with a 202

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w202 c200 malachite green
w115 200 green