Vacuem Leak? - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 06-05-2011
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Vacuem Leak?

So I have already dealt with the 3.0L high idle issues before and they disappeared. Now it is doing it again but only when I have been driving for about 15-20 minutes with the a/c on. When it idles high my a/c does not work. Warm air will start to blow, but if I get the rpms to 4 grand or so it will go back to normal idle and my a/c will kick on. Ive replaced every part that could cause high idle...I thought. So maybe a vacuem leak? Please help with any suggestions you may have.
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Old 06-06-2011
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The temp sensor is going bad . If the PCM senses the engine is too hot it will disable the AC compressor.
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Old 06-06-2011
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Would that cause the high idle as well?
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Old 06-11-2011
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does the air come out of the correct ducts?

when I had my vacuum leak, mine originated from a 4wd solenoid mounted near the vacuum ballast. I know you wouldn't have that, but there were two soft rubber pieces of hose to connect the hard vacuum line to the ballast. did you check/replace those?
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