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1978 Lincoln Mark V Repair Question


Topics covered: Noise, Rattle, Rpm.
Mileage: 157,000 miles.

Asked on April 3, 2012

78 460. noise when accelerate

Hello,
I hear a deaf noise as a humming when I accelerate. All depend the range fo speed or rpm. When cruising, the noise can be heard between 35 to 60 mph. When starting, I can hear the noise if the car need force ( for exemple in a slope or a hill ).Ohterwise, the faster I go, the car make no more noise...Thanks for all. (and excuse me I write as I can I'm from France)
Avatar Asked by kotzbach

Answer

Replied on April 3, 2012

have apro look at this we can't hear it to give a good diagnosis

Tiny Answered by hmac300 (expert)
18,698 answers provided
Replied on April 6, 2012

I can try to be more clear.
There is no noise when iddle. On D position appears the noise during acceleration, certainly a relationship with torque. The noise/vibration seems to come from the right of the car at the level of the front passager . Thanks if you have some clues.

Tiny Response from kotzbach
1 question asked
Replied on April 6, 2012

it may be a broken shield from the cat converter if it's more like a rattle. it cold also be the humming that you hear.other than that i really couldn't say

Tiny Answered by hmac300 (expert)
18,698 answers provided