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Old 08-04-2019, 08:41 PM  
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I have a 2004 Ford Focus ZX5.
In February a friend replaced my lower radiator support. I bought the part on Amazon.

OE Replacement Ford Focus Radiator Support (Partslink Number FO1225163) https://www.amazon.com/dp/B004GC944Q/

Soon after the radiator support was replaced, I noticed a lot of shaking of the whole car when idling at a red light or stop sign, especially when the a/c is turned on. The shaking goes down when I am driving (not idling), or the car is in park.
Recently I took my car to a repair shop. The mechanic showed me the car while it was up on the lift. He showed me that he could actually move the radiator about 1/2" up or down between the lower radiator support and the upper core support. He said that was more movement of a radiator than he's ever seen. However, he said that he didn't have an obvious solution.
My friend is going to look at my car tomorrow to try to see what can be done. I wanted to post here and ask if anyone else had ever experienced this kind of issue with radiator shaking.
Thanks for any advice.



Last edited by lennyshelby; 08-04-2019 at 08:45 PM.
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Old 08-04-2019, 10:32 PM  
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Supposed to be rubber grommets top and bottom. https://www.partsgeek.com/gbproducts...AaAmx6EALw_wcB.
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Old 08-04-2019, 10:32 PM  
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No way a loose radiator could shake the car though. I suspect you have a bad engine mount.
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Old 08-05-2019, 08:01 AM  
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Engine mounts have already been replaced. My friend thought that was the issue, so that was the first thing he replaced. That did help some, but still the car shakes severely at idle.

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Old 08-05-2019, 09:18 AM  
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Start with the easy stuff. Look for a vacuum leak. When were spark plugs last changed? Any misfire codes? Does the MAF sensor work?

Next, check compression for consistent readings cylinder to cylinder. Check vacuum gauge reading - should be steady at idle.
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Old 08-05-2019, 01:29 PM  
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Quote:
Originally Posted by lennyshelby View Post
Engine mounts have already been replaced. My friend thought that was the issue, so that was the first thing he replaced. That did help some, but still the car shakes severely at idle.
Radiator mounting issue is not the source of your vibration. Were Ford or aftermarket mounts used? Aftermarket mounts are garbage.

BTW your lower radiator support is not 'OE' (original equipment - ie Ford) regardless of what Amazon says - it is aftermarket (which in this case is probably fine).

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Old 08-05-2019, 01:36 PM  
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I don't know exactly what type of parts were used to replace the engine mounts. However, I took my car to a different mechanic Saturday. He had the car up in the air, and said that the new engine mounts looked ok.
The only thing that stood out to him was how much the radiator moved.

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Last edited by lennyshelby; 08-05-2019 at 01:38 PM.
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Old 08-05-2019, 01:46 PM  
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Quote:
Originally Posted by lennyshelby View Post
However, I took my car to a different mechanic Saturday. He had the car up in the air, and said that the new engine mounts looked ok.
Looks ok does not always mean they are ok. Im sure he will figure it out.

Good luck
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Old 08-05-2019, 02:05 PM  
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Quote:
Originally Posted by lennyshelby View Post
I don't know exactly what type of parts were used to replace the engine mounts. However, I took my car to a different mechanic Saturday. He had the car up in the air, and said that the new engine mounts looked ok.
The only thing that stood out to him was how much the radiator moved.

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Aftermarket mounts can last days or months.
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Old 08-07-2019, 07:48 AM  
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Or not at all. Pass side mount likely, the aftermarket absolutely suck and likely the issue, Don't think you can look at it and tell, impossible. I've had them go bad in minutes. Ford part only there or put up with it.

If one checked close most Focus radiators will move up and down that much even with the rubber isolators in there once they compress with use. To get them truly tighter you must shim them even more, BTDT on two of them now.

No way does the rad shaking shakes the rest of the car, in fact, the looseness makes sure it can't (give it some thought).

Last edited by amc49; 08-07-2019 at 07:50 AM.
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