I have a 2008 mercury marquis. The EATC system fan stays on high all the time, even when the unit is turn off. Sometimes air will blow out the dash vents. What is my problem, and how can I fix this.
chet
I have a 2008 mercury marquis. The EATC system fan stays on high all the time, even when the unit is turn off. Sometimes air will blow out the dash vents. What is my problem, and how can I fix this.
chet
prolly o rings need changed
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2004 SB Ported Trilogy 48
Has supporting mods and stuff
Thanks to Marty O for his help in updating this car.
R.I.P.
Rex "SC Cheesehead"
Will o rings fix the problem, I don't understand.
it's a vacuum system and when the o rings dry rot they leak causing issues as these. common problem. read this thread as well. You need silicon o rings metric 007
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2004 SB Ported Trilogy 48
Has supporting mods and stuff
Thanks to Marty O for his help in updating this car.
R.I.P.
Rex "SC Cheesehead"
The staying on high could be the blower motor resistor, BCM, the coming out the dash vents is likely the o rings, so you prolly have two issues.
2004 SB Ported Trilogy 48
Has supporting mods and stuff
Thanks to Marty O for his help in updating this car.
R.I.P.
Rex "SC Cheesehead"
here is more on the BCM and staying on high speed.
http://www.crownvic.net/ubbthreads/u...Number=2841446
2004 SB Ported Trilogy 48
Has supporting mods and stuff
Thanks to Marty O for his help in updating this car.
R.I.P.
Rex "SC Cheesehead"
OP you have two problems.
1 - air coming out of the wrong vents is most likely bad o-rings in the EATC.
2 - fan stays on high could be either the BCM or the EATC control board.
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Fix the O-rings first and see if the blower speed goes back to normal before digging into the BCM
O-rings have nothing to do with fan speed.
The Blackbird
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On our way to MV14 the O-rings in Ms.D's car finally crapped out and the car couldn't figure out where to send air. Vents, dash, floor, combos. In the Auto setting it would blast the fan and constantly redirect the air. I had Russ swap the O-rings out and now it works fine. Never touched the BCM. Just advising the OP to tackle the O-rings first and see what happens.
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The Blackbird
Trilogy #61
Driveway Queen
The Spruce Goose
2004 Grand Marquis LS Limited Edition
Daily Driver
“When you can’t make them see the light, make them feel the heat.”
Ronald Regan
"The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."
Lt. Colonel Ralph Peters
“Be polite, be professional, but have a plan to kill everybody you meet.”
"I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
General James Mattis
I thought fail-safe mode only meant it would direct all the air to the defroster, not that it would turn on the fan. I learned something here today...
The Blackbird
Trilogy #61
Driveway Queen
The Spruce Goose
2004 Grand Marquis LS Limited Edition
Daily Driver
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