A/C blows cold then switchs to heat
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A/C blows cold then switchs to heat
A co-worker has a '99 F-150 that has A/C issues.
When the AC is on (either regular or max) with the fan on low-high (less trouble on higher fan speed as it seem to “lock in place) the “door” will flip to the closed position thus only hot air blowing as a result. This happens primarily upon acceleration after stopping if I don’t take off slowly and maintain a constant, steady speed (“gunning it is a guarantee of losing the AC) or if I hit a bump (pothole, speed bump, RR crossing, etc.). If on the highway with no stopping/starting the AC will blow cold for the duration.
I’ve been told that this is a vacuum issue and in order to attempt to fix it, the whole dash needs to be pulled.
What's your take on this issue, Thanks
When the AC is on (either regular or max) with the fan on low-high (less trouble on higher fan speed as it seem to “lock in place) the “door” will flip to the closed position thus only hot air blowing as a result. This happens primarily upon acceleration after stopping if I don’t take off slowly and maintain a constant, steady speed (“gunning it is a guarantee of losing the AC) or if I hit a bump (pothole, speed bump, RR crossing, etc.). If on the highway with no stopping/starting the AC will blow cold for the duration.
I’ve been told that this is a vacuum issue and in order to attempt to fix it, the whole dash needs to be pulled.
What's your take on this issue, Thanks
