Odd humming type noise
#12
if it has a high volume pump, im guessing the bypass valve was actuating. the listing for the mobil filter for the f-body is a small filter. i use the one for an early 90's 2wd truck, it holds about a quart of oil
#13
No good Changed oil filter and oil and it remains. Still only does it around 600 RPM only. When I get the RPMs up over 600 it goes away.
Nothing with the high flow oil pump at low RPMs?? I can't see anything loose
Nothing with the high flow oil pump at low RPMs?? I can't see anything loose
#14
Thanks!
#16
I checked near the distributor area and the sound is strong there too. Its like its right behind the engine. Driving me crazy! And it surges between 400 and 600 RPMs back and forth like a vacuum problem of some sort
Perhaps I should install bigger speakers??
#18
According to service history the cap and rotor were replaced:
From - Marine Chevrolet Cadillac on 7/31/2008
Mileage = 135,218
Description - Customer states that the vehicle will nto start. Replaced battery and battery tray. Vehicle would start but not run. Traced problem to mass
air flow sensor and electronic control module. Replaced both and tested ok.
1 Battery
1 tray
1 holddown
1 bolt
1 bolt
1 ECM Rem 3.670 194
1 MAF SENSO
Free diag
Recommend all fluids be changed. Several bulbs. Tail shaft seal. Break flush. Rear diff service.
Customer request BG cooling system service. Perform service by remoting rust, sludge, and scale.
Replace plugs and wires.
8x spark plugs
1x wires
Tune 8 cyl motor - replace cap and rotor
1x dis cap
1x dis roto
#20
The video is a little better than vauge, but it still may be those lines, there is a line that runs behind the distributor to connect to the drivers side manifold. It could be a couple things, you just have to go one step at a time.