Strange Sound/vibrating with Temp fluctuations
06-25-2014 | 10:45 AM
#1
Thread Starter
Junior Member
Joined: May 2014
Posts: 54
Likes: 0
From: Las Vegas
Car: 1985 Trans Am
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 9 bolt Borg Warner Posi 3.27
Strange Sound/vibrating with Temp fluctuations
Hey Everyone!
I have 85 305 tpi that is producing a mid-ranged turbine type noise that is coming from the front of the engine. It is intermittent and when it comes on, it lasts for about 2-3 minutes.. I felt the radiator while its making the sound and it seems to be vibrating also... Revving the engine does not affect the noise, it is a constant pitch.
I think this is related, but I have had temp fluctuations in stop and go traffic also..
The radiator looks to be in great shape! no leaks at all and still shiny! The water pump was replace recently, as was the radiator cap, thermostat and upper/lower radiator hoses..
Any help or ideas would be greatly appreciated!!!!!
I have 85 305 tpi that is producing a mid-ranged turbine type noise that is coming from the front of the engine. It is intermittent and when it comes on, it lasts for about 2-3 minutes.. I felt the radiator while its making the sound and it seems to be vibrating also... Revving the engine does not affect the noise, it is a constant pitch.
I think this is related, but I have had temp fluctuations in stop and go traffic also..
The radiator looks to be in great shape! no leaks at all and still shiny! The water pump was replace recently, as was the radiator cap, thermostat and upper/lower radiator hoses..
Any help or ideas would be greatly appreciated!!!!!
06-25-2014 | 05:37 PM
#2
Re: Strange Sound/vibrating with Temp fluctuations
Hey Everyone!
I have 85 305 tpi that is producing a mid-ranged turbine type noise that is coming from the front of the engine. It is intermittent and when it comes on, it lasts for about 2-3 minutes.. I felt the radiator while its making the sound and it seems to be vibrating also... Revving the engine does not affect the noise, it is a constant pitch.
I think this is related, but I have had temp fluctuations in stop and go traffic also..
The radiator looks to be in great shape! no leaks at all and still shiny! The water pump was replace recently, as was the radiator cap, thermostat and upper/lower radiator hoses..
Any help or ideas would be greatly appreciated!!!!!
I have 85 305 tpi that is producing a mid-ranged turbine type noise that is coming from the front of the engine. It is intermittent and when it comes on, it lasts for about 2-3 minutes.. I felt the radiator while its making the sound and it seems to be vibrating also... Revving the engine does not affect the noise, it is a constant pitch.
I think this is related, but I have had temp fluctuations in stop and go traffic also..
The radiator looks to be in great shape! no leaks at all and still shiny! The water pump was replace recently, as was the radiator cap, thermostat and upper/lower radiator hoses..
Any help or ideas would be greatly appreciated!!!!!
06-25-2014 | 09:09 PM
#3
Thread Starter
Junior Member
Joined: May 2014
Posts: 54
Likes: 0
From: Las Vegas
Car: 1985 Trans Am
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 9 bolt Borg Warner Posi 3.27
Re: Strange Sound/vibrating with Temp fluctuations
That's what I was thinking... but would it shake the radiator?
06-25-2014 | 10:07 PM
#4
Joined: Oct 2001
Posts: 11,918
Likes: 925
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Strange Sound/vibrating with Temp fluctuations
Yes, they are sometimes a lil off balance.
06-25-2014 | 11:05 PM
#5
Member
Joined: Jun 2014
Posts: 180
Likes: 0
From: Chantilly, VA
Car: 88 Chimera
Engine: 1994 LO5 5.7L
Transmission: 700R4
Axle/Gears: 2.73...?
Re: Strange Sound/vibrating with Temp fluctuations
Let the car idle up to temperature and see if the noise starts when the fan kicks in.
06-29-2014 | 03:47 PM
#6
Thread Starter
Junior Member
Joined: May 2014
Posts: 54
Likes: 0
From: Las Vegas
Car: 1985 Trans Am
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 9 bolt Borg Warner Posi 3.27
Re: Strange Sound/vibrating with Temp fluctuations
Update..
I ordered the radiator fan motor from amazon (Four Seasons 35656 Rad Fan Motor) and installed it and PRESTO! It worked!
The fan fits perfect and runs smooth.
Thanks for the help!
I ordered the radiator fan motor from amazon (Four Seasons 35656 Rad Fan Motor) and installed it and PRESTO! It worked!
The fan fits perfect and runs smooth.
Thanks for the help!
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