Last post on Oct 26, 2013 at 4:56 AM
You are in the Ford Explorer
What is this discussion about?
Ford Explorer, Mercury Mountaineer
Go to NHTSA to file a safety complaint.
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#5660 of 6400 Re: More bad gas mileage... [96mk8lsc]
Jan 21, 2007 (3:38 am)
I have a very similar problem with my new 2006 Ford Explorer, 4.0L engine, with only 7500 miles on it. At around 4000 miles I started to hear a whistle/squeal noise coming from the engine when I accelerate above 2000 rpm and the noise continues to 3100 rpm. Below this rpm it is smooth and quiet. When the gear changes (at > 3000 rpm) from 4th to 5th or from 2nd to 3rd, the whistling goes away immediately. When I press on the gas to raise the rpm back to around 3000 rpm, which shifts it down one gear, the noise returns until the rpm increases above 3000 rpm when the gear shifts to the next higher, rpm goes down and noise immediately fades out.
I must add that this whistling noise can be heard clearly when the outside temperature is cold. The squeal disappears when the outside temperature is above 80 degrees. When the outside temperature drops, the squeal returns.
I am suspecting a bad Mass Airflow Sensor. What did you find out in your case?
#5661 of 6400 Re: ABS and Airbag Light On [ryana97]
Jan 21, 2007 (8:41 am)
Could be a pending BCM failure, which you do not want to have to fix. But it also could just be a random power surge. If it does it again, reboot the car (disconnect the battery, and reconnect after a minute) and see if that fixes it.
#5662 of 6400 Re: 99 explorer has howling noise from engine when cold [tfmr]
Jan 21, 2007 (2:28 pm)
I had the mass air flow sensor fail on an older model explorer, and when they go, the vehicle is undriveable. If your mass air flow sensor was bad, you would be blowing black and the engine would fight to stay running.
#5663 of 6400 Re: 99 explorer has howling noise from engine when cold [tfmr]
Jan 21, 2007 (6:28 pm)
it could be your transmission howling. they tend to do this when either the fluid is sludgy or is low. my explorer did this now that i think about it and i had it flushed and the noise went away instantly and hasnt done it since.
#5664 of 6400 Re: 99 explorer has howling noise from engine when cold [70ss454_man]
Jan 22, 2007 (1:34 am)
Thanks Tom, but I changed my transmission fluid (needed 5 bottles of it),and no change. The strange thing is that is only whistles in the winter season when the outside temperature drops. In the summer you can't hear it.
#5665 of 6400 Re: ABS and Airbag Light On [nvbanker]
Jan 22, 2007 (4:38 am)
Actually it happened again this morning. Outside temperature around 19F. This time the ABS light was on first then the ABS light came an and stayed on even when all of the various heater functions pressed. Even in the defroster mode the fan is not coming on until I actually adjusted the fan speed on the heater then the lights went off. Thank you, I will try to reboot the car. The car is under an extended warranty do you know of any TSB to mention to the dealer when I bring it in?
#5666 of 6400 Re: 99 explorer has howling noise from engine when cold [tfmr]
Jan 22, 2007 (9:06 am)
Hmmm...that is strange.
Have you taken it into a mechanic or the dealer?
#5667 of 6400 Re: 99 explorer has howling noise from engine when cold [70ss454_man]
Jan 22, 2007 (9:36 am)
I'm planning on taking it to the dealer this weekend. Just trying to get some background info. You know how dealers are, if it doesn't happen for them while it is in the shop then the problem doesn't exist. Also, no codes have flashed.
#5668 of 6400 Re: 99 explorer has howling noise from engine when cold [ryana97]
Jan 22, 2007 (9:49 am)
I found some TSBs related to air bag and ABS lights, one sounded right on, TSB 16665. Do you know where I can find out more info on the TSB?
#5669 of 6400 Fuel Gage Wires, 2
Jan 22, 2007 (10:30 pm)
I realized that fuse 17 was not related to this problem and replaced it. but I am still confused about the way that wiring works with this 1994 explorer.