High Pitched Whistle Coming from Engine in Cold Weather?
#31
#32
I get the whistle noise at around -18 celcius to minus 50 on acceleration and the whistle disappears when I take my foot of the gas peddle. Was first told by Ford dealer was air intake mainfold. But the belt tensoiner can make that sound also. So Ford is trying the tensioner first. Does not matter to me, all under warranty. Truck is 04 F-150 FX4, no mods.
Last edited by Fire-Chicken; 12-11-2006 at 11:36 PM.
#33
whistle when cold
I had the the same whistle when temps dropped below freezing and the truck sat. The dealer finally changed the clutch fan and it helped in that the whistle only lasted a few seconds as opposed to a few minutes(until till the truck got some temp in it). I have since put on e-fans and have not had the problem for the past 2 winters.
#34
Engine Whistle
Guess I'll weigh in on this one also. Have a 05 Screw with the Triton and experience the same high pitched whistle starting a cold engine where the outside temp is below 30 degrees. Sound goes away as the engine starts to heat up. Strangly enough, the sound is of course, intermittent. Some cold days it does not make the sound.......
Please post any solutions, perhaps the Techs out there can sound in.
Thanks
Please post any solutions, perhaps the Techs out there can sound in.
Thanks
#35
#36
#37
#38
#39
Here's another whistle story. I noticed the other day, a sort of whistle or whining sound that lasts for about 2-3 seconds when I lift off the pedal. It is not super loud, in fact the only reason I heard it is because I forgot the faceplate for my stereo that day. It may have been there many times before, just not able to drown out Stevie Ray, lol.
Anyway, I have since determined it to be loosely associated with cold weather, say under about 40* F. I say loosely, because though it doesn't seem to do it every time, even in cold, but it has not done it on warmer days (so far).
I haven't noticed any performance or fuel economy issues. Just curious, and keeping my ears open to it worsening.
Anyway, I have since determined it to be loosely associated with cold weather, say under about 40* F. I say loosely, because though it doesn't seem to do it every time, even in cold, but it has not done it on warmer days (so far).
I haven't noticed any performance or fuel economy issues. Just curious, and keeping my ears open to it worsening.
#40
And I thought I was dreaming - because my '05 developed the same whistle this year. It appears to be RPM related, and 60 MPH is about right on the money for mine. Step off the gas, and it goes away immediately. There appears to be a very limited RPM range that it occurs in and I'm trying to narrow it down. I can attest to the fact that it only happens when the temperature drops below freezing though.
#41
Duke,
Do you have and after market intake? If so that might be the issue, my 04 did the same thing when it was cold out. Although I just put the K&N on my 06 and it has yet to make the same noise, I do have a different exhaust setup on my 06, don't know if that makes any difference. Hope this helps.
Do you have and after market intake? If so that might be the issue, my 04 did the same thing when it was cold out. Although I just put the K&N on my 06 and it has yet to make the same noise, I do have a different exhaust setup on my 06, don't know if that makes any difference. Hope this helps.
#43
#44
Originally Posted by Silver05screw
I have this whistle also. Has anybody figured out a fix yet?
I get it also in extreme cold but only at startup and it goes away once it warms up.To me it sounds like the p/s pump whining real bad because the fluid thickens in the cold.It only happens on the coldest of days and it goes away when it warms up otherwise I wouldn't drive it.Each individual truck is different it could be pulley bearings,fan clutch or any of the other stuff we think it sounds like.I'm interested to find out if we ever find the answer here.
#45
Originally Posted by ColoFX4
Duke,
Do you have and after market intake? If so that might be the issue, my 04 did the same thing when it was cold out. Although I just put the K&N on my 06 and it has yet to make the same noise, I do have a different exhaust setup on my 06, don't know if that makes any difference. Hope this helps.
Do you have and after market intake? If so that might be the issue, my 04 did the same thing when it was cold out. Although I just put the K&N on my 06 and it has yet to make the same noise, I do have a different exhaust setup on my 06, don't know if that makes any difference. Hope this helps.
It has happened once at -20 with the AF1 intake.
Oh RP,
YOU'RE A DORK!
Cmon man, watching Snow White and the Seven Dwarfs?
Geese, where is Dz when you need him.
Duke