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Old 01-20-2013, 06:52 PM
sypher9 sypher9 is offline
Learning to use the forums
 
Join Date: Jan 2013
Posts: 3
Default Re: 94 Ranger 4.0 Idling/Starting Problem(s)

I had some big idle issues on my 97 4.0 ranger 4x4. I ended up replacing the gaskets on the plenum as well as the gasket that goes between the fuel rail and top of the intake manifold. Now the truck idles perfect. One thing you can try to see if you are suffering from a vacuum leak as I was; take some carb cleaner and spray it around your engine. If the idle changes you may have a vacuum leak. Before I did this my truck would hunt for idle when cold, when it was warm it would run great going down the road, but the idle surged , and a lot of times the truck would stall when I didn't have my foot on the gas.
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