Seeing that its a 99 and had a coolant light before a flashing CEL, I'd have to say its a cylinder failure. I'd be willing to bet.
Any noises when all of this was occurring?
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Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
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