fans not doing much?

[funbobby]

my fans come on at about right temp but they dont seem to actually cool down the engine, im wondering if the fans just prevent it getting really hot or should i see the gauge dropping and how quickly?

[Chimjunkie]

Gauge should read 80-90. fans should cut in and out not stay on unless very hot day. If not then your rad and cooling system needs checking out.

[That Daddy]

Make sure they are sucking not blowing,one of mine was wired back to front and the connectors were factoryonly noticed it while i was doing something else,strangely enough the car was fine in trafficwho knows how long it had been like thiswhen your fans cut/in the gauge tends to just stay stable rather than a leap to the cooler part of the gauge,as long as the gauge dont keep creeping up then its OK,i have a guy who comes to me with only one fan working on his Chim,i told him about it but it appears its been like it for a while with no problems(yet)

[funbobby]

its had a new rad on it recently but left it to idle and it sat at about 90 without getting any cooler, i guess im slighlty concerned that in the heat of summer it might struggle a bit. how can i safely tell if they are sucking or blowing so 2 speak??

[spend]

Stick a feather duster (important garage tool) behind and see which way the feathers deflect...

Some otter switches have temp range settings that come on late and stay on for a long time, others come on early just for a short time. You should also rev your engine when testing at a standstill as at idle the coolant is not being pumped around so much..

Dave

[funbobby]

a feather duster thats a new one on me for tools of the trade! if they do happen to be blowing what can i do? is it something that might have been done wrong on the recent rad change?

[Chimjunkie]

funbobby said:

a feather duster thats a new one on me for tools of the trade! if they do happen to be blowing what can i do? is it something that might have been done wrong on the recent rad change?

Read the part number off the offending fan and check with manufacturer that it is a pulling model. If it is then just reverse the polarity on the connection.