Ok today i was out riding with buddy who has a magnum 330. About 1/2 way through the trip the temp light started blinking. So we turned it off and ck the oil cooler and it was not very hot and the fins were not pluged. We came back to it 1/2 an hour later and started it the light was still blinking. Also it was starting to get a little dark so we turned the lights on and the speedo needle was blinking also. we drove it home about 1/2 hour trip and it did find. The fan is on constantly it is not overheating. Has any one seen anything like this? we checked the wires from the sensor on the cooler to the box they go into. Any help would be great i really dont want to have to take it to the dealership if i dont have to.

 

The CDI is bad and the Temp sensor is more than likely blown.... Happened to me too.. I bet if you check the 4x4 will not work right as well... I burned my CDI and the temp sensor and my shop changed the sensor only, but within the week the sensor was blown again so if I was you I would check the CDI first. Your problem is the same as mine and this is what my dealer told me.... THere is a problem with the CDI boxes!!!!

 

Thanks for the info. Is there any known way to check the cdi box see if it is the problme?

 

I know with mine you could see the burn marks on the plug and also on the sensor... THIS is directly from the Service manual for a 2004 Mag... Ready keep an eye out for typos!!!

CDI CRANKING OUTPUT TEST

The following peak voltage tests will measure the amount of output directly from each component. A peak reading voltmeter can be used to perform this test. Disconnect the stator connectors from the CDI module. Test output from the detection and pulse and compare to chart. The following measurements were obtained when cranking the engine with the electric start, spark plug installed. The starter system must be in good condition and the battery fully charged.

200 watt 4 stroke DC / CDI ignition

TEST CONNECT METER TO: Reading (w/ VOM) Reading (w/ Peak reading Adapter)
Pulse Coil white / red and white .15 volts AC 4.5 volts DC


With ATV off using Multimeter

TEST CONNECT METER WIRE TO: READING IN OHMS
PULSE COIL white / red to white 522 ohm +/- 20%
PULSE COIL white / red to ground open
CHARGE COIL yellow to yellow .5 ohm +/- 20%
CHARGE COIL yellow to ground open

As I said above this info is straight out of the Service Manual... Hope it helps

Rob

 

Thanks again for all your help. Ill try this tommrow.
Chuck

 

I you need to try anything else let me know I'll look it up for you