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Eka1921
New User
Mar 26, 2016, 7:04 AM
Post #1 of 6
(1721 views)
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Problem with Audi A8
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Year of vehicle 2000
Make of vehicle (Ford/ Chevrolet) Audi A8
Model of vehicle ( Taurus/ Cavalier)
Engine size (2.0/ 5.7) 3.3
Mileage/Kilometers 240 000
When i'm driwing and give him more power he just turn of,i am Mechanic and i don't know what is the problem please help
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 26, 2016, 7:17 AM
Post #2 of 6
(1709 views)
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Re: Problem with Audi A8
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OK - Is that miles or KMs? Really doesn't matter and I personally don't have any specifics on these cars.
It's known to me as a performance vehicle which also means it likely has a WOT (= Wide Open Throttle) cut out for the compressor for maximum available power for the most power when requested.
About all I know of are using info or the intake manifold vacuum directly or converted to electrical to tell the compressor to shut down.
When asking for WOT manifold vacuum is close to zero so a vacuum leak in the wrong place would send along wrong info and is what I'd look for first,
T
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Eka1921
New User
Mar 26, 2016, 7:22 AM
Post #3 of 6
(1706 views)
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Re: Problem with Audi A8
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Kilometers
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Mar 26, 2016, 7:28 AM
Post #4 of 6
(1702 views)
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Re: Problem with Audi A8
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That helps. Same suggestion. Look for hoses and items on intake manifold that either directly or with a rubber hose(?) are in fact in good shape. Items may just plug in so connection(s) must be good.
It's just the first thing to at least rule out. If you find vacuum items in tough shape, brittle, cracks, or bloated from oil or anything wrong replace them pro-actively anyway as those things don't last forever,
T
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Eka1921
New User
Mar 26, 2016, 7:48 AM
Post #5 of 6
(1697 views)
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Re: Problem with Audi A8
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(This post was edited by Eka1921 on Mar 26, 2016, 8:11 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Mar 26, 2016, 8:13 AM
Post #6 of 6
(1691 views)
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Re: Problem with Audi A8
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This AC can be shutting down for any assortment of reasons.
The first thing that needs to be done is a complete evacuate and recharge to get the proper amount of refrigerant into the system as certain pressures can be shutting the system down from either high or low extremes at higher RPM.
From there you can find out if there are any other issues while monitoring the pressures. You would also need a scan tool to examine the return signals from pressure sensors for accuracy.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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