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My 94 escort wagon got bumped by another car. All was well. The next day I drove it 200k. I made a pit stop on highway. Tried to start car. Fuel Cutoff light was on. Got it towed as it wouldnt start. Figured out where the switch was. Pushed it back in. Car starts now and seems to run ok except for this low hum that seems to come from left side of engine. Im scared to drive it till I can figure this hum out. Im not mechanically inclined and am more inclined to ask you guys what you think b4 I spend money I dont have. I havent driven it at highway speed so I dont know what it sounds like at 100k/h, but just revving it in park it makes this sound like the motor is working harder than it should.


any ideas?
Thanks in advance
 

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From what direction was the car bumped? If it was from the front driver's side, it could be you have a motor mount whose rubber isolator ripped, or maybe the battery tray (they are mostly plastic) got cracked and is letting the battery rub something.

You could have a close look at that corner of the engine compartment, to see if anything is now touching that should not be. You might have to remove the air filter housing, the rubber inlet duct, & battery/battery tray to see it. (Just becasue they cover up a lot of territory) And looking from underneath, check that the rubber isolators are still between that front-to-rear crossmember under the transmission. The isolators in the rear get a lot of oil from normal old age leaks. If they got knocked out, you might hear a good bit more engine noise coming into the car.
On the other side of the motor, at the front, is the accessory bracket that holds the alternator, power steering pump, & a.c. compressor. If the bump was from the front or on that side (passenger side) Maybe something is now touching that bracket. (if the radiator got bumped out of place), or the plastic radiator fan shroud is touching the exhaust manifold. Make sure there is nothing rubbing against the serpentine belt (on the passenger side of the motor). On mine this belt can only be seen by looking down from above, AND up from below. And its possible your car still has its splash shield under the front of the motor - which gets in the way of inspectiing things down there.

And a bump can cause a crack in the exhaust system - that would result in strange noises.
 

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Thanks but I guess I was getting at something in the belt system is siezed causing the motor to work harder....I think its the water pump....but I have no clue....It all started when the fuel cutoff switch went....but its not really related to getting bumped I guess
 

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The timing belt spins the water pump on our Escorts. Both the timing belt and the pulley on the pump have 'teeth'. So if the water pump stopped turning, it would shred the timing belt in a couple of seconds & the engine would not run.
The serpentine belts spins the a.c. compressor, an idler pulley, the power steering pump, the alternator, and the tensioner pulley. It would have to be one of those things, as the 'drive' pulley for that belt is the pulley on the end of the crankshaft.
The next thing I would have had on my list of suspects would be a vacuum leak somewhere. That will make the engine labor, and possibly misfire. If the large rubber inlet duct is torn, it will make the idle uneven and rumbly.
 
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