fuel<\/a> to try and compensate for the extra air it is taking in. Most common place for a vacuum leak is on the PCV hose. You may need to remove the left front inner fenderwell splash shield to gain access.<\/p>\n![\"PCV](\"\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/pcv-2000-ford-ranger.gif\")
<\/p>\n
Engine Emission Control<\/h3>\n
CAUTION: Do not remove any part of the engine emission control system. Operating the engine without the engine emission control system intact will reduce fuel economy and engine ventilation. This will weaken engine performance and shorten engine life.<\/p>\n
The engine emission control system consists of the:
\n\u2022positive crankcase ventilation (PCV) system.
\n\u2022exhaust gas recirculation (EGR) system (2.3L and 4.0L engines only).<\/p>\n
Exhaust Gas Recirculation<\/h3>\n
The EGR system returns a small amount of exhaust gas into the intake manifold. This reduces the overall combustion temperature. Cooler combustion temperatures provide a significant reduction of the oxides of nitrogen (NOx) in the exhaust emissions.<\/p>\n
2.3L Engine<\/strong><\/p>\nThe 2.3L engine incorporates a stepper motor-controlled EGR valve which receives its signal from the PCM. Engine coolant is used to cool the EGR valve. The EGR valve and stepper motor are serviced as an assembly.<\/p>\n
4.0L Engine<\/strong><\/p>\nThe powertrain control module (PCM) controls the EGR vacuum regulator solenoid. The EGR vacuum regulator solenoid controls the vacuum to the EGR valve. When the EGR valve opens, exhaust gas flows to the intake manifold to be returned to the combustion cycle. The differential pressure feedback EGR system monitors the flow and returns a signal to the powertrain control module (PCM).<\/p>\n
The amount of recirculated exhaust gas depends upon:
\n\u2022engine rpm.
\n\u2022intake manifold vacuum.
\n\u2022exhaust backpressure.
\n\u2022engine coolant temperature.
\n\u2022throttle position.<\/p>\n
Exhaust Emission Control System<\/h4>\n
The vehicle emission control information (VECI) decal is located on the upper radiator support and shows:
\n\u2022components of the emission control system.
\n\u2022the correct vacuum hose routing.
\n\u2022the color stripe of the vacuum hoses.<\/p>\n
Positive Crankcase Ventilation (PCV) System<\/h4>\n
The PCV system uses intake manifold vacuum to ventilate blow-by fumes from the crankcase and return the fumes to the intake manifold for combustion. The 2.3L engine does this through a water-heated fitting. The PCV valve varies the amount of blow-by gasses returned to the intake manifold based on available engine vacuum. The PCV valve also prevents the entry of combustion backfiring into the crankcase.<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
When I accelerate to driving speed and take my foot off the accelerator the engine will not idle down. And when the engine does idle down it smells like gas. RESPONSE In most cases when an engine idles high it is caused by a vacuum leak. This would also cause the engine to add\u00a0 more… Read More »PCV 2000 Ford Ranger 2.3 liter<\/span><\/a><\/p>\n","protected":false},"author":13842,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1,5],"tags":[322,10827,434,58],"class_list":["post-35756","post","type-post","status-publish","format-standard","hentry","category-auto-repair-questions","category-ford","tag-high-idle","tag-pcv-hose","tag-ranger","tag-vacuum-leak"],"yoast_head":"\nPCV 2000 Ford Ranger 2.3 liter - FreeAutoMechanic Advice<\/title>\n<meta name=\"description\" content=\"When I accelerate and take my foot off the accelerator the engine will not idle down. 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![\"2000](\"\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/2000-ford-ranger.jpg\")
When I accelerate to driving speed and take my foot off the accelerator the engine will not idle down. And when the engine does idle down it smells like gas.<\/p>\n