Hello R Huggins. I can say from personal experience on my Chevy's a small block & a big block which both had the same symptom as you describe. The solution on both was a new O2 sensor. Cleaning them was not the answer. If everything else is the way it should be then chances are really good that this would solve the problem. If the dealer(s) have already changed it for a new unit & the problem persists then maybe you should look for another GTS to buy as the fix will probably be a costly one. It's a terrible thing to buy a new bike & have a costly surprise after you spend your hard earned dough. Unless the purchase price of the bike is real cheap. Then you may want to start by checking the compression, all the electricals etc..... I hope this helps. Good luck. Be good. Peter Piazza. ----- Original Message ----- From: "R Huggins" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, February 02, 2002 5:37 PM Subject: EFI test coupler
> Hello - > > I'm trying to troubleshoot an EFI engine light on a Yamaha GTS 1000 > (1993). > > Can anyone tell me where to purchase an "EFI test coupler" Yamaha part > number: YM-3149 or 90890-03149 > > The part number came out of the GTS service manual, but the local dealer > here in Denver cannot find a listing for the part > > Thanks, R Huggins > >
