Allpar Forums banner

Cabin 'Whistle' heard above 55mph in our '05 T &C ?

1193 Views 10 Replies 5 Participants Last post by  bill
Our newest addition to the Mopar fleet has made a weird 'whistle' from day one. At above 55mph a high pitch whistle is heard. The loudness of the whistle corresponds to the engine rpm. For example, cruising at 65mph the whistle is high pitched and constant. I let off the accelerator and the tone of the whistle lowers alittle as does the loudness. I would say it is coming from the front dashboard, driver's side. But with the acoustics of the cabin it is hard to really determine. With the radio on it cannot be heard. But alittle annoying while quiet.
The van has 73K miles.
I'm thinking this is a needle in the haystack but thought maybe someone else out there has had the same issue? Thanks
1 - 3 of 3 Posts

· Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
Joined
·
17,294 Posts
If it is related to engine vacuum, does depressing the brake pedal slightly during the whistle change it or eliminate it?
 

· Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
Joined
·
17,294 Posts
I have used a body shop (painter's) masking tape to tape over seams and gaps in the body panels, cowl, glass and firewall to try and locate a whistle or buzz caused by wind. Apply over one section at a time. The tape won't harm the finish.
 

· Super Moderator
1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
Joined
·
17,294 Posts
Try to locate the source from inside the vehicle. Does the passenger hear the same noise from the same direction? If the passenger can get up and listen to the base of the windshield/cowl area or down by the floor, does the aural perspective change at all? Is it directly out front under or in front of the vehicle? Does opening a window slightly change the noise? Does it happen in rain or does temperature have an effect?
If related to engine speed, it may also occur at a standstill by bringing the RPM up. If it is transaxle-related, it may occur on a lift in gear at speed while searching for the noise source.
If it is wind whistle, the body tape-off method may help. Loose rubber splash aprons, weatherstrips, trim mouldings and body gaps can act like a reed and are common whistlers. There is a large high-pressure at the front of the vehicle and low-pressure at the vehicle sides and rear.
 
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top