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Es300 Starting Problems


prl
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Yesterday, a hot day in Texas, my 2002 ES300 would not start. This morning, it started with no problem. I drove it for 15 or 20 minutes and it would not start again. After about 15 minutes it started with no problem. Could not jump start the car yesterday. Later found out that the battery was OK. Any ideas greatly appreciated. Thank you.

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It could be vapor lock. I would think higher pressure fuel pumps would over come this, but you never know. Here's the definition from Wiki:

"Vapor lock (also known as vapour lock) is a problem that mostly affects gasoline-fueled internal combustion engines. It occurs when the liquid fuel changes state from liquid to gas while still in the fuel delivery system. This disrupts the operation of the fuel pump, causing loss of feed pressure to the carburetor or fuel injection system, resulting in transient loss of power or complete stalling. Restarting the engine from this state may be difficult. The fuel can vaporise due to being heated by the engine, by the local climate or due to a lower boiling point at high altitude. In regions where higher volatility fuels are used during the winter to improve the starting of the engine, the use of "winter" fuels during the summer can cause vapor lock to occur more readily."

It could also be your IACV (Idle Air Control Valve). If so, there are several guides on here of how to clean it.

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  • 2 months later...

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