A/C, idle, cruse control problems...Vacuum?
Thread Starter
Teching In
Joined: Jan 2003
Posts: 26
Likes: 0
From: Tucson, Arizona
A/C, idle, cruse control problems...Vacuum? I have noticed problems ever since my engine was rebuilt. The problems didnt exist before the motor was removed and replace. One problem is that occationally when crusing in 6th gear, A/C on, while flooring the gas pedal...the upper mode A/C door seem to move preventing air from blowing out of the dash vents. (A total loss of engine vacuum?) The air sounds as if it is blowing through the lower vents, but definaltely stops moving air through the upper vents. As soon as I let off of the pedal, the air returns through the upper vents.
This seems to be a vacuum problem, maybe something wasnt re-connected correctly...or possible something to do with the cam that was installed preventing enough vacuum from being generated at full throttle. I know that when I start the engine, I have to wait until it builds a vacuum before it will idle smoothly. At the time this happens, the A/C will only then begin blowing air through the upper vents on the dash.
My cruse control also is not working since the rebuild. Any chance these are all related? A/C, idle, and cruse?
This seems to be a vacuum problem, maybe something wasnt re-connected correctly...or possible something to do with the cam that was installed preventing enough vacuum from being generated at full throttle. I know that when I start the engine, I have to wait until it builds a vacuum before it will idle smoothly. At the time this happens, the A/C will only then begin blowing air through the upper vents on the dash.
My cruse control also is not working since the rebuild. Any chance these are all related? A/C, idle, and cruse?
its hard to say exactly what you should be looking for. I would start looking at all your vacuum lines. See if you can hear anything at idle. pull the throttle cable and see if you can hear anything as your timing advances.
With your cruise not working its gotta be a vacuum leak. Start looking around your cruise control area for leaks.
With your cruise not working its gotta be a vacuum leak. Start looking around your cruise control area for leaks.
Originally Posted by shhwing
I have noticed problems ever since my engine was rebuilt. The problems didnt exist before the motor was removed and replace. One problem is that occationally when crusing in 6th gear, A/C on, while flooring the gas pedal...the upper mode A/C door seem to move preventing air from blowing out of the dash vents. (A total loss of engine vacuum?) The air sounds as if it is blowing through the lower vents, but definaltely stops moving air through the upper vents. As soon as I let off of the pedal, the air returns through the upper vents.
This seems to be a vacuum problem, maybe something wasnt re-connected correctly...or possible something to do with the cam that was installed preventing enough vacuum from being generated at full throttle. I know that when I start the engine, I have to wait until it builds a vacuum before it will idle smoothly. At the time this happens, the A/C will only then begin blowing air through the upper vents on the dash.
My cruse control also is not working since the rebuild. Any chance these are all related? A/C, idle, and cruse?
This seems to be a vacuum problem, maybe something wasnt re-connected correctly...or possible something to do with the cam that was installed preventing enough vacuum from being generated at full throttle. I know that when I start the engine, I have to wait until it builds a vacuum before it will idle smoothly. At the time this happens, the A/C will only then begin blowing air through the upper vents on the dash.
My cruse control also is not working since the rebuild. Any chance these are all related? A/C, idle, and cruse?
