It started off only once in a while, but now it happens as soon as we start the engine. A really loud noise almost sounds like a vacume cleaner, a loud one, will start, mostly when we come to a stop light or stop sign, then once we start to push the gas it feels like it wants to die.
Year, model and engine would sure help
SOURCE: car dies when it idles
i had that problem it was my idle air control valve located on the top of the enigine with a lil plugin
SOURCE: grinding noise coming from under driver floor board
You have a u-joint in the rear drive shaft that is no good..Look under the truck at every one and look for rust next to the caps..Also look at the mid shift bearing that is in the center of the rear drive shaft.It is bolted to the frame and the drive shaft goes through the center of it..Hope this helps you and that is almost 100% the problem I promise..Have a great night....
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SOURCE: Engine makes a loud humming noise-Ford Mustang GT 2000
Need to check for any loose belts first .
SOURCE: Real loud knocking noise when starting
this can be a serious problem, sounds like one of your engine valves, has the car overheated recently? if your valves bent, you need to take the engine apart hope i helped
SOURCE: 2003 Ford Escape Won't Idle
well it could be idle control valve but i would check for vacuum leaks first see if any hose fell off but could be egr valve stuck open hope this leads you some where
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