Jeepmedic46
NAXJA Forum User
- Location
- Orange, Ma
My 2000 Sport with the 4.0 has all of a sudden developed a whistling sound while driving down the road. Has anyone else had this happen to them?
Whistling sound
- Thread starter Jeepmedic46
- Start date
8Mud
NAXJA Forum User
- Location
- Central Germany
Roof Rack?
Jeepmedic46
NAXJA Forum User
- Location
- Orange, Ma
No roof rack. Seems to whistle around 30mph and faster.
RCP Phx
NAXJA Forum User
- Location
- Phoenix,Az
Have you check the intake system?
gearwhine
NAXJA Forum User
- Location
- Denver, CO
Have you checked all your weather stripping around doors and windows?
RCP Phx
NAXJA Forum User
- Location
- Phoenix,Az
Good point, take vehicle speed out/in of the equation.
Dragonslayer
NAXJA Forum User
- Location
- Los Angeles
Cracked AC/heater vacuum hose or hose connector? Cracked vacuum hose fitting at the
Intake manifold or vacuum reservoir bottle?
Intake manifold or vacuum reservoir bottle?
Jeepmedic46
NAXJA Forum User
- Location
- Orange, Ma
I’ll check that out. It happens upon acceleration. Could this have a effect on the heater not working?
RCP Phx
NAXJA Forum User
- Location
- Phoenix,Az
Definitely!
- Location
- In a strange land
Could be a vacuum leak. I don't know about the late models, but my '96 uses vacuum to control the flow of coolant through the heater core and to open and close the doors that direct the flow of air through the HVAC system. Lacking engine vacuum you will lose those features.
Your vacuum comes from the intake side of the engine. This could be as simple as an aged rubber boot that has deteriorated and come loose from the vacuum fitting. You are going to have to look and listen under the hood.
Your vacuum comes from the intake side of the engine. This could be as simple as an aged rubber boot that has deteriorated and come loose from the vacuum fitting. You are going to have to look and listen under the hood.
Yes, happened on my 2000. There is a small vacuum line coming out of the firewall next to your A/C drier. It's the hard plastic type and mine cracked, so as a temporary fix I put a length of heat shrink tubing on it, butted the ends together and it held for a long time.
