Overheating in traffic
#21
04-15-2021, 11:02 PM
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Ray Capper (04-16-2021)
#22
04-18-2021, 01:55 PM
I find that most bikes have a problem holding the temperature within reason, however I flushed my radiator and changed the coolant which keeps the temperatue with normal riding in cold weather 4 degrees C down. I started to worry because with cold weather (5 degrees C) the bike temperature at 130km/h was still 83deg C which is too high for the circumstances. Should be 79 deg C. After flushing and changing coolant it did again. Therefore change coolant once in a while, I did not believe in it before.
#23
05-06-2021, 10:59 PM
Super Moderator
Hey gang,
Exactly the same problem, bike runs great on open road then overheats in stop start traffic, even in the garage the fan doesn't kick in until 3/4 up the temp gauge when it should kick in around the half way point.
I have replaced my old rad, new temp switch in post and I was planning on changing my old stat however as I was messing about installing the new rad I noticed that the fan (looking from the back) turned clockwise. I held a piece of paper in front of the rad and instead of the airflow being front to back I found that the fan was in fact blowing hot engine side air forward. Obviously in traffic on a hot day blowing hot air towards the rad isn't good so before you spend any more money / time on replacing parts maybe check the fan air flow direction.
I ride a 99 CBR600F4 and at some point over the years one of her owners has wired the fan incorrectly which probably led to her sale.
I have reversed the pos / neg wires on the fan and now the fan turns anti clockwise and now if I hold a piece of paper in front of the rad its pulled back towards the fan and for reasons that I don't understand the fan starts (in garage) just past the half way point on the gauge which is as it should be, hopefully I've cracked it and if not its certainly worth checking all the same.
Take it easy
Ray
Exactly the same problem, bike runs great on open road then overheats in stop start traffic, even in the garage the fan doesn't kick in until 3/4 up the temp gauge when it should kick in around the half way point.
I have replaced my old rad, new temp switch in post and I was planning on changing my old stat however as I was messing about installing the new rad I noticed that the fan (looking from the back) turned clockwise. I held a piece of paper in front of the rad and instead of the airflow being front to back I found that the fan was in fact blowing hot engine side air forward. Obviously in traffic on a hot day blowing hot air towards the rad isn't good so before you spend any more money / time on replacing parts maybe check the fan air flow direction.
I ride a 99 CBR600F4 and at some point over the years one of her owners has wired the fan incorrectly which probably led to her sale.
I have reversed the pos / neg wires on the fan and now the fan turns anti clockwise and now if I hold a piece of paper in front of the rad its pulled back towards the fan and for reasons that I don't understand the fan starts (in garage) just past the half way point on the gauge which is as it should be, hopefully I've cracked it and if not its certainly worth checking all the same.
Take it easy
Ray
I'm just as surprised as you are.
#24
05-07-2021, 12:25 AM
Wow thanks for the update Ill look into it, obviously that sounds counter intuitive to both of us as the fans sole job is to cool the rad so pulling cold air back seems logical. I have a 99 cbr600f4 which has a thermo switch in the rad. I must add that since my initial post my bikes overheating problem has gone although Ive noticed that my fan comes on at the 1/4 gauge mark and runs nearly continuously, Im convinced that its working better but I will look into it in case Ive created another problem.
Thanks mate.
Thanks mate.
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