Question about 2003 Jeep Grand Cherokee
I think you are completely right. When you accelerate, you are opening the throttle up a little, or adding more fuel, either way, this causes a drop in pressure, which will cause the spring to pull the vent back into defroster mode. My friend has been dealing with this for years, and we still are not really sure what to do about it. What may be the cause, though, is if one of the vacuum hoses leak, it causes the lower pressure to lower still further, so check to make sure none leak.
Posted on May 23, 2011
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Posted on Jan 02, 2017
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