 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Ford / Ford Explorer / August 2006My 91 is smoking out the vents
Hopefully someone can help me with this... I was on the highway for about an hour with the A/C running normally, all of a sudden smoke starts pouring out of my vents, I turn off the A/C and check under the hood. The fan motor? in the passenger/windshield corner is smoking a bit but not as much as what was coming out of the vents. I left the fan and A/C off and kept driving (everything else was normal) . This was 2 days ago and it runs fine, I haven't turned the fan or A/C back on. The mechanic told me today that he can't find ANY souce of smoke or burning and that the A/C is running just fine. What the!?!?!?!? What did the smoke smell like? > Hopefully someone can help me with this... I was on the highway for about an > hour with the A/C running normally, all of a sudden smoke starts pouring out [quoted text clipped - 5 lines] > can't find ANY souce of smoke or burning and that the A/C is running just > fine. What the!?!?!?!? Unfortunately my allergies are really bad so my sense of smell isn't so good but at first I thought It was like burning brush. >What did the smoke smell like? > [quoted text clipped - 3 lines] >> can't find ANY souce of smoke or burning and that the A/C is running just >> fine. What the!?!?!?!? Not having been there, it's hard to tell - BUT, is it possible that it was actually water vapor? Under certain conditions (warm, humid outside air being drawn in and cooled to just the right temperature) the moisture in the air condenses into tiny droplets and forms a mist, exactly like how clouds form. I've seen it happen in my '93 Villager, although never in my Mountaineer. It used to happen when the cabin air had been chilled down pretty cold using MAX A/C, and then I switched the A/C to draw in outside air. I'm fairly certain that's not it, I'm familiar with what you're describing (my Lancer does that sometimes) but the A/C doesn't get cold enough for that and it was definitely smoke, I can't smell very well but I sure as H-e-double hockeysticks smelled that! I literally thought I had an engine fire. I just heard from the mechanic again and he still found no problems? Oh well I guess If a pro says it's ok (I'll have someone to sue when I burst into flames! haha) Thanks for your help. >Not having been there, it's hard to tell - BUT, is it possible that it was actually >water vapor? Under certain conditions (warm, humid outside air being drawn [quoted text clipped - 4 lines] >to happen when the cabin air had been chilled down pretty cold using MAX A/C, >and then I switched the A/C to draw in outside air. Most likely it's a blown heater core. It may look and smell like smoke but it's probably just hot coolant in the form of steam. > I'm fairly certain that's not it, I'm familiar with what you're describing > (my Lancer does that sometimes) but the A/C doesn't get cold enough for that [quoted text clipped - 12 lines] > >to happen when the cabin air had been chilled down pretty cold using MAX A/C, > >and then I switched the A/C to draw in outside air. Now the fan wont work on any speeds except for "HIgh" and regardless of wether the A/C is on or off, it engages when the fan is at high. Does this sound like something associated with a bad heater core? >Most likely it's a blown heater core. It may look and smell like smoke but >it's probably just hot coolant in the form of steam. > Now the fan wont work on any speeds except for "HIgh" and regardless of > wether the A/C is on or off, it engages when the fan is at high. Does this > sound like something associated with a bad heater core? The whole thing now makes sense since the resistor that most likely burned out is in the blower housing. From under the hood the resistor is located inside the housing below the blower motor. Steve Absolutely right. The blower motor resistor pack, inside the air manifold under the hood. There will be a 3 or 4 pin connector going to the pack and it pulls out of the manifold. >> Now the fan wont work on any speeds except for "HIgh" and regardless of >> wether the A/C is on or off, it engages when the fan is at high. Does [quoted text clipped - 6 lines] > > Steve I brought my truck into the mehanic again today and he's going to pull the a/c unit out of the dash and check the switches, said that when he first looked at it (the blower motor) he didn't see any signs of electrical damage. >Absolutely right. The blower motor resistor pack, inside the air manifold >under the hood. There will be a 3 or 4 pin connector going to the pack and [quoted text clipped - 5 lines] >> >> Steve > I brought my truck into the mehanic again today and he's going to pull the > a/c unit out of the dash and check the switches, said that when he first > looked at it (the blower motor) he didn't see any signs of electrical damage. Don't let him take the a/c unit out of the dash! There's no need. Just get him to check the fan speed resistor pack as stated by the two other posters in this thread. You probably blew two of the resistors and just need to replace the board. I hope you don't get soaked. I'm not sure what method he used but, he replaced the resistors associated with the fan motor. I have all fan speeds back and everything is normal. The burning smell was leaves that had burned when the resistors fried, which he cleaned out. The whole thing cost $136, I don't know if that was too much or not but the problem is fixed and I'm happy. Thanks to everyone here who helped me out! I was able to speak to the mechanic more informed and come to a resolution quickly. Thanks again! >> I brought my truck into the mehanic again today and he's going to pull the >> a/c unit out of the dash and check the switches, said that when he first [quoted text clipped - 4 lines] >other posters in this thread. You probably blew two of the resistors >and just need to replace the board. I hope you don't get soaked. |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.