1993 4.0 4x4 Manual high idle problem
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Joined: Nov 2024
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From: Windsor co
1993 4.0 4x4 Manual high idle problem
Okay first my ranger is 1 month old to me and live it. I purchased with a high idle problem and can’t seem to remedy with all the forum searches. I have changed IAC, TPS sensor, fuel filter air filter, plugs , wires, PCV valve and have done carb spray on vacuum hoses. When I disconnect IAC idle drops done to 8-900 and idles nice. What else can I do and check? I’m about to just replace all vacuum lines. 107,000 miles on truck idles about 2500 RPM
Last edited by Zipalo1224; Nov 26, 2024 at 05:24 PM.
Member
Joined: Jul 2020
Posts: 119
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From: columbia, mo
Okay first my ranger is 1 month old to me and live it. I purchased with a high idle problem and can’t seem to remedy with all the forum searches. I have changed IAC, TPS sensor, fuel filter air filter, plugs , wires, PCV valve and have done carb spray on vacuum hoses. When I disconnect IAC idle drops done to 8-900 and idles nice. What else can I do and check? I’m about to just replace all vacuum lines. 107,000 miles on truck idles about 2500 RPM
Look at the vacuum line that is located underneath the throttle body that goes to purge valve solenoid, that is routed to charcoal canister... on driver side.
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