Jeep XJ Heat Soak Fix - Simple and Inexpensive Fix
Автор: Leggetts Garage
Загружено: 2018-10-24
Просмотров: 34500
Описание:
heat from the exhaust and intake manifolds heats the fuel rail and fuel injectors which are located just above the manifolds. This can vaporize fuel in the fuel rail and/or injectors. When the engine is started, the fuel vapor can result in misfiring and stumbling and can set the CEL with codes related to cylinder misfires and/or injector malfunctions.
People try many different solutions to the heat soak issue such as heat shields, insulation, hood vents, etc. Most of these seem to have limited success. The solution that seems to work most reliably for most people is some sort of timer to keep the e-fan running for 3-4 minutes when the engine is turned off. The e-fan is on the same side of the engine compartment as the intake/exhaust manifolds and fuel rail and injectors. When the engine is shut-off, the e-fan time delay will cause the fan to blow air over the manifolds and out the back end of the engine compartment and will prevent the fuel rail and injectors from getting quite so hot. An OFF delay of 3-4 minutes will generally cool things sufficiently to prevent the heat soak issue.
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