Cooling fans do not operate, fuses & fuseable links all good
Country: United StatesMake: Nissan/DatsunModel: Sentra GXEYear: 1997
Checked all fuses & links,,all good
Welcome to JA! I am Carguy1 and I will assist you today.Hi there!Do you have a volt meter or test light so we can check the wiring?Also, do you have a check engine light on?
engine lite is on, yes I have a meter. would also like to know if something can be bypassed to alow fans to opperate constantly as local temps are 90* plus and I have to use my car
Well, yes, we may be able to jump the relay, in fact that is where I want to start. If you pull the cooling fan relay and flip it over, you will see some numbers on it.Make a jumper wire and jump the slot for pin #3 to pin #5. This should turn the fans on. Let me know and we will take it from there.If the fans don't come on, then try jumping #1 to #5 and let me know.Thanks.
here are 2 relays,, I tried jumping the fan2 relay both ways & nothing happened. engine was running
Ok, you have a power problem to the fan relays from the looks of it.Take out cooling relay 1 and check for power where pin1 and pin 3 go, also do the same on pin 1 and 3 of cooling relay #2 let me know. These should have constant power to these slots.Thanks
No pwr to either relay
Ok, if you are sure the fuses and fusible links are good, then you have a couple of broken wires in there.Pin 1 wire is brown and pin #3 is green. Without power to the relays, there is nothing we can jump to make the fans work.Pin 1 should have power with the key on. Pin #3 should have constant power. Pin 1 is the power that gets grounded by the ecm and makes the relays kick on. So, pin 3 off the fusible is actually the power source to the fans through the relays.Since both are without power, I would look at the source close to the fuse box and work towards the relays.However, I have also seen the corrosion at the relays cause the problem, so get the relay box open and check there first. Just to see.That being said, if you run a power wire off the fusible link to the #3 green wire, then you could do the jump and have the fans work. As a temp repair to get the car running during the day.
using batt + fan 2 will work but fan1 wont. tried jumping both relays at same time but still could only get 2 to work
Ok, try running direct power to the fan that won't work and see if it turns on. IF not then the fan motor shot.
thanks for yr help. #1 fan seems to be kaput but having 1 fan working is better than none! this car has over 156K mi on it and just need it to limp a little longer. Thanks again for yr help.
You are very welcome! Please be sure to rate my answers!