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1987 740t.i. humming noise

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
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jacobharding
Posts: 208
Joined: 11 January 2013
Year and Model: 87 740 T.I.
Location: Madison, VA

1987 740t.i. humming noise

Post by jacobharding »

Sounds like a loud fuel pump but it doesn't start humming until after engine is running. Power steering level is up and the noise is not affected by turning the wheel. The noise seems to be coming from the transmission area and does not change in pitch from the moment the car starts until it is shut down. It is loud enough to hear from inside while sitting at a stop but road noise drowns in out as soon as the car starts picking up speed. It is sopping wet outside hear so I just don't feel like crawling up under it and doing some investigating.
If somebody experienced with this model could throw me a few suggestions I would be much obliged.
Thanks,
-Jacob
I am not an expert mechanic, but I will attempt any repair. Worst case scenario is I screw it up worse than it was.

87 745 Turbo Intercooler...333k, all original!
96 850 Turbo wagon "totalled - parting out"
94 850 Turbo wagon waiting for tranny
2 94 855's gone
They're all gone now....

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