|
Post by h2e Al In Aus on Feb 5, 2015 2:45:30 GMT -5
I have had problems with my M model since I rode it in the rain ? , I have cleaned Radiator checked thermostat , water pump , then put a temp gun on it , top of Radiator 82C bottom 56C , NOT HOT , but gauge just goes up and up 3/4 + , Voltage reg Ha !!
|
|
|
Post by wayne on Feb 5, 2015 4:36:23 GMT -5
Al, I have a mate's bike that had a faulty radiator temp gauge. The engine itself didn't seem as hot as the gauge was showing. As the fan is controlled by an independent switch of very simple construction, we rode it around on the understanding that if the fan wasn't cutting in, we could ignore the gauge and continue riding. From memory there is a component in the instrument cluster which I replaced with a used one sourced from a damaged cluster that fixed the problem. Given that the problem surfaced after riding in the rain, it could be just a gauge regulator issue.
See this quote from a very old post, I can't recall the author:
The temp gauge has a small heater that warms a bi-metalic strip (much like a thermostat) that makes the needle move. If the needle shoots right to "hot" you have something that is making that heater hot very fast. If I remember correctly there is a small unit that drops the volts down to 7 volts from 12 that supplies the heater. If somehow you crossed wires and were supplying 12 volts to the heater that would be a problem. Also, the other side of that circuit is a ground that controlled by the temp sending unit down by the thermostat. That almost sounds like that wire is shorted to ground. I'll bet you have some wires plugged into the wrong sockets. I would check it out fast before you burn up the heater in the temp gauge. The service manual has some info on all of this and a wiring diagram.
Al, I doubt that you have crossed wires as it worked before the rain. But this may isolate the problem for you to that regulator.
(So it looks like your radiator may not be at fault ?) That'd be good news.
|
|
|
Post by h2e Al In Aus on Feb 6, 2015 4:25:30 GMT -5
Hi Wayne when I worked for Toyota in the 70s we had a lot of trouble with the voltage regs in Dash not keeping it at 7 volts , and I think that thats the problem , but I'm very weary of overheating ,and no wiring has been changed it just happened !
|
|
|
Post by timpa136 on Feb 6, 2015 10:48:39 GMT -5
Hi all,
A friend of mine needed my voltage regulator from a M model gauge years back and that fixed his gauge. Glenn said .....I've fitted a 7.4 volt regulator from a model car and works well, Most of the time the gauge is in the middle, The thread is open to anyone to view lets hope some where down the line the advice is a help to someone, Thanks for your views on the topic, Good point Glenn and Al... Al in AUS said I have had problems with my M model since I rode it in the rain ? I was going to add that Dodges in the LATE 60'S Era had voltage regulator problems that could fry all the gauges and the good news is an after market regulator is available. I can ask my friend as he recently did this fix to his 1968 Super Bee.
Another advantage that we have now is the point and shoot infra red temperature sensors we can use.
One last thought of true overheating is the by pass port getting plugged in the upper radiator hose outlet, the one with 3 screws.
Otherwise, get the wifes hair dryer out to dry things up and take your chances with your wife!
Tim P.S. I re read your temperatures Al and I would not expect that large of differences between top and bottom radiator? I have not used a temp gun to confirm this. What's the latest?
|
|
|
Post by cp9800 on Oct 16, 2017 23:25:19 GMT -5
This is my first post and I apologize if I've mucked it up somehow but I wanted to share my experience with an overheating RE5M. The cooling fan wasn't functioning, it was purging coolant past the radiator cap when hot, and it blew one of the small hoses leading from the filler neck to the overflow reservoir. I replaced both of the small hoses since they are still available from good old Suzuki of America. I replaced the thermo switch with the Honda CRX switch. ($20 is a steal) I also noticed deposits on the sealing surface of the radiator filler neck and removed them with sandpaper. Result: it cools very well. The CRX thermo switch turns on the fan slightly before the needle reaches the halfway mark, stopping the upward climb of the needle. The purging of coolant is non existent. I now feel confident enough to take the RE on a long ride. What a relief! Edit: February 29 2020. The switch on my other RE5 stopped working a few days ago. I have more information on the Honda thermo switch. It fits more models than the CRX, it even fits some Acura models and the Beck Arnley part number is 201-0817. Since both of my switches stopped working I imagine this is a common occurence. The switch is readily available in all the usual places.
|
|
|
Post by redbug2 on Oct 17, 2017 8:49:20 GMT -5
After reading this thread I just bought one for my blue RE-5. The old one was working but I always felt it got a little too hot before it kicked in. I did have one that failed to come on with for the RE-5 I resurrected for my brother-in-law. Since the blue one is my rider I'm putting a new one in. Amazon had one for less than $20.
|
|
|
Post by timpa136 on Oct 17, 2017 12:08:26 GMT -5
This is my first post and I apologize if I've mucked it up somehow but I wanted to share my experience with an overheating RE5M. The cooling fan wasn't functioning, it was purging coolant past the radiator cap when hot, and it blew one of the small hoses leading from the filler neck to the overflow reservoir. I replaced both of the small hoses since they are still available from good old Suzuki of America. I replaced the thermo switch with the Honda CRX switch. ($20 is a steal) I also noticed deposits on the sealing surface of the radiator filler neck and removed them with sandpaper. Result: it cools very well. The CRX thermo switch turns on the fan slightly before the needle reaches the halfway mark, stopping the upward climb of the needle. The purging of coolant is non existent. I now feel confident enough to take the RE on a long ride. What a relief! Welcome to the forum . Interesting to note the 5.5mm hoses are still available, thanks for that. 14 09343-05123 HOSE | M,A; 5.5x9.5x400 $12.40 Tim
|
|
|
Post by wayne on Oct 17, 2017 19:10:12 GMT -5
But Tim, I'd be very surprised if they had the factory correct textile covering. Now I now they're under the tank and you'd never see them but I'D know they were there.
|
|
|
Post by timpa136 on Oct 19, 2017 21:58:53 GMT -5
Interestingly the part number is the same as my early printing parts book. I would be interested in viewing O.E. hose.
There is 5.0mm braided hose available at an independent auto parts store near me and this hose looks very similar in appearance to the
original equipment but is a bit of a challenge to slip over the plastic or soft radiator end. I have not tried Suzuki replacement hose yet.
Tim
|
|