Just bought A '99 Black F150 extend cab 33,000 miles off road and have a noise like a Moan coming from dash but only after I have driven it for about 5 miles and only at 2000 rpm no matter what gear and even if I am idle but only when warm and never when cold if I flip the glove box open and push on the in side wall I can change the pitch of the sound I guess I can live with it but I would like to know what it is and if it is an easy fix I have had the truck 3 weeks and have had a wiff of some smell I believe from the heater vents only 3 times and comes and goes pretty quick could that be coolant or what ever? may be noise has something to do with the smell can any one shed light on this thanks.

 

Sounds like you have a bad heater core,I've had that noise happen before. I've never heard of a core going bad that soon on any vehicle before,though. Time for a dealer trip(under warranty,I hope)
good luck on getting it fixed,,,,,,98

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98 F-150 4.6 Litre XLT2wd Ext. cab
Yokahama AVS/ST's
prarie tan/tan int.
K/N gen.II fipk
custom dual exh/gibson rectangle tips/rear exiting.
color matched snuglid
Superchip!!!
Clear front corners
Stillen Quad light air dam,Sweet!!
Euro taillights
Cobra 75WXST cb w/weather alert
[b]Kenwood cd w/Radio Shack speakers,don't laugh it sounds pretty good
Viper alarm
On the way/wheels,tires, etc..etc.......
the monochromatic boogie is done,cool!.
Come see my new pictures@ www.my-f150.com

officialtomwaits.com
reverendhortonheat.com

WOW,what a cool site!

FENDER GUITARS ROCK!!!