Cooling fan problem
#1
Cooling fan problem
A few weeks back my daughters 02 died on her. When I got there it would start and run with foot on gas but bogged down really bad. Wouldn't go over 2000 rpm. Temp gauge was hot. Towed it home and car sat couple days before I had a chance to work on it. Cranked it up and it seamed fine. Only had knock senor code. Drove it a little with no problem. Got home and let it idle in drive a bit and noticed it was getting a little warm. Noticed only one fan was running, the one on the right looking down into engine bay. Even with ac on the right fan only works. As I was trying to figure out the fan issue the engine started to make knocking noise and it set misfire codes on 1 and 6 cylinders. Now I will be replacing engine but need to solve fan issue. Fan spins freely by hand.
#2
Fan motor should be a simple check.
Turn by hand, see if it turns freely.
Find if it's getting 12V, and that ground is good.
Pull the plug and check conductivity of the motor.
One of the above must be missing.
Turn by hand, see if it turns freely.
Find if it's getting 12V, and that ground is good.
Pull the plug and check conductivity of the motor.
One of the above must be missing.
#3
Just replace the fan motor. They're about $40 or so.
It's the same part for the left or right.
These fan motors do fail.
I've swapped them in both my Maximas and there are several threads on the subject going on right now.
It's the same part for the left or right.
These fan motors do fail.
I've swapped them in both my Maximas and there are several threads on the subject going on right now.
#5
A quick test it to unplug the motor and hotwire it with power and ground. If it runs it's good. If not it's bad.