EMS Warning Light (1999 Yaris) - Toyota Yaris Forums

bigbodie · 04-26-2011, 06:55 PM

I've been having a problem with my Yaris and I can't quite make out what is the problem.

The EMS warning light keeps illuminating from time to time, sometimes it goes off on its own accord but then comes back on, to add to that the engine idles in a strange way, to the point where you can hear the engine noise from the cockpit. At speeds she is fine, but I am finding the gear changing a bit lumpy when I put the gas back down...

It's merely a hunch, but I'm guessing the culprit could be a faulty/weak spark plug. But until I get the invoice from my last service I cannot be too sure

Could anyone give me a rough suggestion please?

04-26-2011, 06:55 PM	#1
bigbodie Drives: Toyota Yaris CDX Join Date: Apr 2011 Location: IOW Posts: 2	EMS Warning Light (1999 Yaris) I've been having a problem with my Yaris and I can't quite make out what is the problem. The EMS warning light keeps illuminating from time to time, sometimes it goes off on its own accord but then comes back on, to add to that the engine idles in a strange way, to the point where you can hear the engine noise from the cockpit. At speeds she is fine, but I am finding the gear changing a bit lumpy when I put the gas back down... It's merely a hunch, but I'm guessing the culprit could be a faulty/weak spark plug. But until I get the invoice from my last service I cannot be too sure Could anyone give me a rough suggestion please?

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