2003 Ford Explorer NEED HELP Heater's on High but nothing c

Tiny
POCOLACHRISTIAN
  • MEMBER
  • 2003 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 133,500 MILES
I can turn my heater on but nothing is coming out when I turn it on the floor setting but when I turn it on other settings I can feel air. Also when I turn on defrost even on High I can barely feel anything. Please help.
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Thursday, March 4th, 2010 AT 8:01 PM

15 Replies

Tiny
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  • EXPERT
The vent doors that direct air flow are actuated by vacuum. Check for vacuum leaks under the dash. Also, make sure the linkage to the vent door on the passanger side is connected.

Let me know what you find.
Joe
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Saturday, March 6th, 2010 AT 12:07 AM
Tiny
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Also I noticed when I drive my explorer for a long period of time then park it for awhile then get back in it smells like oil inside the vehicle. Plus I noticed my oil pressure level running alittle high any ideas?

P.S. Where do I find the linkage to the vent door.
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Saturday, March 6th, 2010 AT 4:36 AM
Tiny
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It is under the dash on the passanger side. As far as the oil, check if there is a leak from the valve covers. It can leak down onto the exhaust manifold and burn. Also, how high is the oil pressure?
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Monday, March 8th, 2010 AT 5:08 PM
Tiny
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It's a little over the middle hash mark
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Monday, March 8th, 2010 AT 7:31 PM
Tiny
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First, thanks for the positive feed back. It's appreciated. As far as the oil pressure, it sounds good. I would check the valve covers to make sure that isn't where it is leaking. If you smell it, chances are it is running down to the exhaust manifold and burning off there.

Let me know if you have other questions.

Joe
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Monday, March 8th, 2010 AT 11:13 PM
Tiny
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I just bought this vehicle and got the oil changed they informed me that there was oil sludge on oil cap. Is that anything to worry about or will the new oil and filter take care of that. What does the pcv valve actually do and how do you know if it's bad. Thank You very much (03' Ford explorer 133,500 miles)
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Tuesday, March 9th, 2010 AT 7:44 AM
Tiny
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First, the sludge isn't a great thing, but is common on many cars. Since you just got the vehicle, I recommend (since there is sludge) drive the car about 1000 miles and check the oil to see if it is really dirty. If it is, have it changed again. If you do that a couple times, it should clean up. Don't be overly concerned about it.

As far as the PCV, that stands for positive crankcase ventilation. Inside the engine (crankcase) pressure and unburned fumes build up. The PCV valve is attached to the intake manifold which has vacuum when the engine is running. It sucks the unburned fumes from the crankcase and recirculated them through the engine to reburn them. It also helps keep moisture from building up in the engine.

It is easy to check. You will see it located on the top of the valve cover. It is pushed into a rubber grommit. Just pull it out. Inside of it is a ball valve. If you shake it and can hear it move around inside, the valve is good. If it is stuck and you hear nothing moving, replace it. It is a very cheap part, under 10 dollars, and you can replace it yourself in about 5 minutes.

If you have other questions, let me know.

Joe
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Tuesday, March 9th, 2010 AT 10:23 PM
Tiny
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HI, when I turn on my air/heat even on high I can't feel anything coming out of vents only the vent for defrost. It sounds like it's on hight but nothing. The rear air is working just front air. Any ideas. Thank You
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Friday, March 19th, 2010 AT 1:37 PM
Tiny
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The vent doors are actuated by vacuum. Check under the dash for vacuum leaks. If there is one, the system can't work. As a result, the direction of air flow is limited.
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Saturday, March 20th, 2010 AT 12:07 PM
Tiny
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Let me run a new one by so far you been right about everything and I appreciate your help. I just got a new rear end put in. Now I noticed that crusing around 35-50mph and then let off gas and just coast slower I hear like a grinding coming from rear. Any ideas. I thought maybe wrong gear oil but I dont' know. Thank You
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Sunday, March 21st, 2010 AT 12:08 AM
Tiny
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  • EXPERT
With the car in neutral, parking brake on so the vehicle can't move, grab on to the rear of the drive shaft to see if there is any play in the (pinion bearing) which goes into the differential. When you accellerate the torque twist one way, and then the opposite way when you let off. If that bearing is bad, you will hear it.

Let me know.
Joe
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Sunday, March 21st, 2010 AT 12:42 AM
Tiny
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I just got the pinion replaced just a coulple of days ago. Now I hear rear end noise when I deaccelerate. They said something about tire noise. I was also told it would make that noise if they used wrong gear oil is that true and since rear end just got replaced could it be wheel bearing or what. Thank You
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Sunday, March 21st, 2010 AT 8:03 AM
Tiny
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It could be either of them. If the tires are cupped or an agressive tread, they can make noise. However, the wrong gear oil can cause it to make noise too. As far as a wheel bearing, it could be that. However, the noise would change when making turns. Does that happen?
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Sunday, March 21st, 2010 AT 9:51 PM
Tiny
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Ok well I took it back and they said that that noise is natural for explorers. They just put new pinion in and now I only hear the noise when I let off gas and coast. Kinda like a grinding noise. I didn't know that was normal. Any ideas.
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Tuesday, March 23rd, 2010 AT 4:19 PM
Tiny
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Honestly, I have driven, worked on, and owned Explorers and a grinding noise when letting off the gas is not normal. I'm not there to hear it so I have to imagine what you hear. To me it sounds like the back lash in the differential wasn't properly adjusted.

In this case, I would recommend having another mechanic test drive the vehicle with you and listen to it to see if he feels it is normal.

That is only my opinion, but I am sure a grinding is not normal

Let me know what you decide.

Joe
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Tuesday, March 23rd, 2010 AT 9:34 PM

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