Bike wont reach operating temp in cold weather - Suzuki GSX-R Motorcycle Forums Gixxer.com

 
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post #1 of 12 (permalink) Old 01-18-2019, 11:41 PM Thread Starter
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Bike wont reach operating temp in cold weather

Is it bad? I mean I'll let it warm to operating temperature but when I get going for a while it'll drop to as low as 140degrees Fahrenheit. One time 130 degrees. And the only time it gets back up is when I come to a stop light.
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post #2 of 12 (permalink) Old 01-19-2019, 08:09 AM
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Re: Bike wont reach operating temp in cold weather

Have you verified it has a thermostat,previous owner may have removed it.
Unless you're riding in -10f temps
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post #3 of 12 (permalink) Old 01-19-2019, 02:36 PM
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Re: Bike wont reach operating temp in cold weather

Per the service manual:
Engine overcools:
1. Defective ECT sensor - Replace
2. Extremely cold weather - Put on the radiator cover.
3. Defective thermostat - Replace
4. Defective cooling fan relay, or open- or short-circuited - Repair or replace.
5. Defective ECM - Replace.

I'm with OG about checking to see if you have a thermostat and, if so, does it work or is it stuck open. After that and if you're riding in very cold weather, I'd try blocking part of the radiator. Try blocking 50% but keep an eye on the temperature and be ready to remove half of that if the temperature gets high.
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post #4 of 12 (permalink) Old 01-19-2019, 09:45 PM Thread Starter
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Yeah temperature weather here is between 45-55 degrees Fahrenheit. And the temperature for the bike can rise all the way up to 220degrees then the fan will kick in, but what I didnt specify was that while I'm moving down the road cruising, the temperature drops to as low as 140.
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post #5 of 12 (permalink) Old 01-20-2019, 03:09 PM
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Re: Bike wont reach operating temp in cold weather

That sounds more like a thermostat (or no-thermostat) problem. I'd expect blocking to be appropriate at lower temps. The temp should stabilize at at least 160 F and even that is low. The thermostat operating temp is 180 F. If you pay attention during warmup, you should see the temp run up into the 180's, then quickly drop down into the 160's as the thermostat opens, then rise again as things stabilize. It's not easy on a motorcycle because things are so tightly packed, but if you can get your hands on the radiator inlet hose, it should stay cold until the thermostat opens and then warm up fairly abruptly. If it continuously warms up, the thermostat is missing or stuck open.

Extended operation at low temps will promote sludge buildup in the oil due to moisture in the blowby not evaporating.
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post #6 of 12 (permalink) Old 01-20-2019, 03:27 PM
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Re: Bike wont reach operating temp in cold weather

Yes, it's bad. If the reading is correct, then the thermostat may be stuck open.
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post #7 of 12 (permalink) Old 01-20-2019, 09:29 PM Thread Starter
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I dont know if the reading is correct or not. And there was indeed sludge build up in the oil filler cap and I ended up changing the oil and the sludge build up was minor. But it doesn't go down to 160 once it hits 180. Once it hits 220 the fan turns on then brings it down to like 205. I can check the thermostat.
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post #8 of 12 (permalink) Old 01-28-2019, 08:00 PM Thread Starter
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Ok were good now. I solved the mystery.
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post #9 of 12 (permalink) Old 01-29-2019, 09:22 AM
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Re: Bike wont reach operating temp in cold weather

Quote:
Originally Posted by JamesIsMe View Post
Ok were good now. I solved the mystery.
Do we have to ask or you like us to beg?
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post #10 of 12 (permalink) Old 01-29-2019, 11:49 AM Thread Starter
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I just changed my riding habits and altered it for the kind of weather I was riding in. Riding at a slightly higher rpm in cold weather. Was able to maintain at least 170 degrees Fahrenheit while riding.
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post #11 of 12 (permalink) Old 01-29-2019, 12:06 PM
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Re: Bike wont reach operating temp in cold weather

That is not the solution. My bike will go to 170-175 in 40 degree weather as I ride in 5th or 6th gear, and will creep up later.

You have a problem
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post #12 of 12 (permalink) Old 01-29-2019, 06:15 PM Thread Starter
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I guess I can have a mechanic look at it. I usually ride at like 4-6k rpms cruising, so minimum I was doing was 6k now
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