Arctic cat engine trouble - Snowmobile Forum: Your #1 Snowmobile Forum

ken c · 03-16-2003, 10:20 PM

HELP

I have a 1998 arctic cat zr 600 efi – it starts fine and runs great until it gets warm – then it will back fire and blow it self out. I have checked all the resistances with a Fluke meter and all are pretty much right on with the exception of the timing sensor – it reads 95 OHMS – the book says it should be 150.

Any ideas on what the problem is?

Thanks in advance.

Steve-o- · 03-17-2003, 02:25 PM

Deffinitly the EFI chip. What it is doing, in a nut shell, is running rich. When a sled is cold, the EFI feeds it mroe fuel, when the sled is warm, the EFI feeds it less fuel. I am geussing that the EFI chip is somehow distorted and feeding it richly. I would either A, go and ask the local sled head, or B, purchase a HP chip and replace the old one. I am 70% sure its the EFI chip.

My .02$

Steve-o- · 03-19-2003, 10:24 PM

EFI chip = ECU