2004 FX140 Overheating HELP

[Athrift]

I have a 2004 FX140 Yamaha Waverunner. After driving for 2 hours, the temperature Guage lights up red. You can let it cool down and drive it again but it's like it's overheating. I've taken it and had it "unclogged" and the temperature sensor changed but it's still doing it. It runs perfect other than that. If it sits for a couple weeks, it will go about 2 hours before it does it again, otherwise it won't run long before the temperature Guage comes on and slows the engine down. Anyone have this problem???

[JIM'S PERFORMANCE]

I have a 2004 FX140 Yamaha Waverunner. After driving for 2 hours, the temperature Guage lights up red. You can let it cool down and drive it again but it's like it's overheating. I've taken it and had it "unclogged" and the temperature sensor changed but it's still doing it. It runs perfect other than that. If it sits for a couple weeks, it will go about 2 hours before it does it again, otherwise it won't run long before the temperature Guage comes on and slows the engine down. Anyone have this problem???

Might have a thermostat going bad. Or you have build up in the water passages.

[Athrift]

That's what I thought as well but that didn't fix the prob! Is there more than one thermostat?

[kwtony]

You have an intake temp sensor that might be causing this as well..

Press the select switch

for 8 seconds and check the error code indicated on the multifunction meter.

Here is a summary of the codes...


Code Symptom
01 Normal
13 Pickup coil malfunction
15 Engine temperature sensor malfunction
18 Throttle position sensor malfunction
19 Incorrect battery voltage
23 Intake air temperature sensor malfunction
24 Cam position sensor malfunction
29 Intake air pressure sensor malfunction
47 Slant detection switch malfunction
48 Incorrect data transmission
54 Bypass valve motor malfunction
55 Steering switch malfunction
63 Intake air system malfunction

[Athrift]

Thank you! Does the ski have to be running and running hot to throw this code? It won't give me anything with the power on under the garage! I am really struggling with this ski! I don't know anything about them and there is no where close that will fix skis around

[kwtony]

unplug your intake temp sensor and see if it throws a code.

Your exhaust hs a temp sensor
Intake has a temp sensor
engine has a sensor

any one of these could be bad. Located them on your ski and visually inspect the wires and plugs

[kwtony]

Yes it does need to be beeping to throw a code. I have seen a broken harness cause a ski to act stupid, but not throw a code. Simple enough right??

[fx140md]

I have the same problem on my FX140. Have you fix your overheat problem? can you share. thanks

[kwtony]

There are 3-4 different sensors that will make the temp alarm go off. Understand it could be any one of them,. I can send the owners manual for this engine if anyone needs it. Just pm me

[barondurden]

I have the same problem on my FX140. Have you fix your overheat problem? can you share. thanks

Check you tube on the left front. My 05 fxho would do this to find out the tube was clogged. Clothes hanger fixed the clogged ran fine ever since