Well, I keep getting the 1281 code... engine too cold. I have recently replaced the radiator, flushed all lines, flushed trans cooler, new hoses, new water pump, new coolant temp sensor, and 180 t-stat when I installed my air gap manifold. I added Purple Ice and now I think my computer is dumping more fuel to get the motor hotter. Or am I just on crack?

Has anyone run into anything like this? I thought I was doing good getting this 360 to run cooler.

 

I run it in my dirt bikes and my truck. Used to be sponsored by Royal Purple and still have a lot of the stuff around.

 

what kind of bikes? I have a '01 yz250 and a '03 polaris predator 500 that wil smoke any raptor or banshee. The yz is about to be sold for a snowmobile.

 

Sold my '04 WR450 end of last year. Still got my '03 YZ250F, an '05 YFZ450 quad and an '85 ATC350X. The quad and 3-wheeler are for sale. No time for sand toys anymore, I spend most of my riding time at the track on the YZ. Going to get a new YZ450F with the money.

 

nice, all the guys around here are riding crf450's, I still remember the 426 days....

 

I had the same issue and it was a T stat that opened a little too early.

You can try buying another T stat, I've had good luck with Stant Superstats.

You could also try an underdrive pulley to gain some power back and it'll run the WP less. If you don't have a lot of electrical accesories, you can run one without issues.

 

I have a yz426 I love that bike but it needs a flywheel weight because it wants to stall in the coroners.

Also I run engine ice in my bikes

 

way to go, hijack your own thread, j/k

 

Cooling Agent Show Down

http://www.turbomagazine.com/feature...ves/index.html

 

We use Purple Ice in the race cars from time to time. Depends on the track and weather conditions. Most track we run at have a rule against running antifreeze in the radiators. The Ice does help keep it cooler and still be " legal".