2008 lincoln cont. signature series A/C drops temp at h


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2008 lincoln cont. signature series A/C drops temp at high speeds

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jnlcars
User

Sep 2, 2012, 8:06 AM

Post #1 of 5 (2270 views)

2008 lincoln cont. signature series A/C drops temp at high speeds	Sign In

I have this car it has a 4.6L motor and again this is a 2008 Lincoln cont. signature series. Not too long ago this problem began. At an idle the AC works great at 30 mph it works fine even at 50 mph (not as good though) but go to 70 mph and its like luke warm. I havn't done anything to the car or replaced any thing. but would like to have it working again the way its suppose to. thanks for any and all replies

(This post was edited by jnlcars on Sep 2, 2012, 8:25 AM)

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Sep 2, 2012, 8:55 AM

Post #2 of 5 (2239 views)

Re: 2008 lincoln cont. signature series A/C drops temp at high speeds	Sign In

Would be interesting to see what the system pressures are. If you can take it to a shop, they can put a set of gauges on it and drive it to see what the pressures are up to when it doesn't blow cold.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Sep 2, 2012, 8:56 AM)

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 2, 2012, 9:56 AM

Post #3 of 5 (2225 views)

Re: 2008 lincoln cont. signature series A/C drops temp at high speeds	Sign In

How long do you have to drive at that speed for this to happen, assuming you went directly to that speed?

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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.

Tom Greenleaf
Ultimate Carjunky / Moderator
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Sep 2, 2012, 11:37 AM

Post #4 of 5 (2219 views)

Re: 2008 lincoln cont. signature series A/C drops temp at high speeds	Sign In

It can be real but check that the lower air dam is in fact there under bumper. Some easily get knocked off in harmless parking situations/curbs etc.

Those help direct flow of air thru grille making a vacuum underside and if that is pressured up by wind speed the fan would be compromised and hence cooling would drop off at speed when you would think air speed would be helping. Easy check. Those aren't there for good looks,

T

jnlcars
User

Sep 2, 2012, 12:15 PM

Post #5 of 5 (2209 views)

Re: 2008 lincoln cont. signature series A/C drops temp at high speeds	Sign In

thanks every body i will find out what the pressure is and check the air dam as described

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