2003 EB A/C Hissing
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Freshman User
Joined: Aug 2001
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2003 EB A/C Hissing
While driving at a set speed, I notice a low level hissing from my A/C. It is not loud, but it is quite noticeable and pretty annoying. It isn't noticeable at a stop or when accelerating, I assume it has something to do with the vacuum lines. Of course, the dealership service dept. was unable to detect this problem, despite their 43 mile test drive. Anyone else notice this or have any ideas? Thanks.
Junior User
Joined: May 2002
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2003 EB A/C Hissing
Yes, mine does that. Another weird thing: sometimes when I hit the brakes I hear a ventilation line "door" closing, i.e., that seems to have something to do with shifting from cool to heated air. Go figure.
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Joined: Oct 2002
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2003 EB A/C Hissing
I just bought mine Saturday and it's already in the shop. I will listen for the hissing sound. Has anyone noticed that the ride sucks? Mine is so much rougher than my 2000 model and all of them seem to be that way.
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Joined: Jun 2002
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2003 EB A/C Hissing
I have the same hissing sound (only when the fan is greater than 1 bar). And yes I occasional hear the "closing" sound (it's like we're docking our space ship on the landing pad :P depressurizing).
Does this have anything to do with the rear ventilation system and the ventilation used for the cool / heat seats?
It doesn't bother me but please keep us updated if they find the exact cause (is it suppose to be there?)...thanks.
Does this have anything to do with the rear ventilation system and the ventilation used for the cool / heat seats?
It doesn't bother me but please keep us updated if they find the exact cause (is it suppose to be there?)...thanks.
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Joined: Jun 2002
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2003 EB A/C Hissing
Robert,
Go test drive another Expy. I find my ride very plush (smooth and controlled) especially for a full size SUV.
I did however replace all my OEM Conti to Bridgestone Dueler H/P tires. Considerable upgrade to every attribute of the ride (quieter, better traction/braking, stiffer sidewall for less lean in turns, etc.). The only downside (other than cost) is the reduction of off-road grip as the H/P is suppose to be derived from the SO2 tread (if you believe Bridgestone's ads
).
I find the Expy more stable in turns (low radius) than my SHO! The Conti ride was acceptable too but I wanted better performance from my tires. Good luck.
Go test drive another Expy. I find my ride very plush (smooth and controlled) especially for a full size SUV.
I did however replace all my OEM Conti to Bridgestone Dueler H/P tires. Considerable upgrade to every attribute of the ride (quieter, better traction/braking, stiffer sidewall for less lean in turns, etc.). The only downside (other than cost) is the reduction of off-road grip as the H/P is suppose to be derived from the SO2 tread (if you believe Bridgestone's ads
).I find the Expy more stable in turns (low radius) than my SHO! The Conti ride was acceptable too but I wanted better performance from my tires. Good luck.
2003 EB A/C Hissing
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andyt113
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Jan 8, 2003 12:51 AM
