FavoriteMystaque
Hard-core CEG'er
- Joined
- Oct 16, 2004
- Messages
- 1,192
You should search Zetec running hot/overheating
You should search Zetec running hot/overheating
I lack Zetec experience, but you are only getting Low speed with the temp in the red:crazy: Maybe the waterpump is bad, or coolant is old. The green relay is the low speed relay. When you turn on the A/C and jump the switch (or the switch is closed because the refrigerant is OK) the Low speed comes on. The high speed will only trigger if the engine is hot and the A/C is on (like 90 degrees weather) Try this old topic FANS and you can verify the high circuit wiring is OK. If you jumper 5 and 3 (2 widest terminals in relay's socket) you will get lower speed in R5 green socket and higher speed from R2 black socket. Jumper only with car off. You can test the relay with a 9V battery and ohmmeter, I would have to do it myself to describe accurately (did it 2 years ago).
You should search Zetec running hot/overheating
I lack Zetec experience, but you are only getting Low speed with the temp in the red:crazy: Maybe the waterpump is bad, or coolant is old. The green relay is the low speed relay. When you turn on the A/C and jump the switch (or the switch is closed because the refrigerant is OK) the Low speed comes on. The high speed will only trigger if the engine is hot and the A/C is on (like 90 degrees weather) Try this old topic FANS and you can verify the high circuit wiring is OK. If you jumper 5 and 3 (2 widest terminals in relay's socket) you will get lower speed in R5 green socket and higher speed from R2 black socket. Jumper only with car off. You can test the relay with a 9V battery and ohmmeter, I would have to do it myself to describe accurately (did it 2 years ago).