Cooling fans vibrating after install, Why? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
 
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post #1 of 10 (permalink) Old 07-04-2011, 03:54 PM Thread Starter
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Question Cooling fans vibrating after install, Why?

My 03 Intrepid was having a problem blowing out the 40amp Hi/Speed Rad fuse. So after much reasearch and testing I found its my fans blowing out the 40amp fuse. So I went to Autozone bought the Dorman 620-005 Fans matched them up to the factory ones I was removing and found they did not have two center relay plug ins on the fan but had the main connection plug in correct. I called the parts store again and they told me this was the part listed for my car, so I installed the fans, good news is the A/C works and the fan runs at high speed (while I feel the vibration inside the car at a Idle) for like a minute shuts off for about 15 seconds and then runs again while the A/C is engaged. When A/C is not engaged fans are not working unless temp gets up to high and then high kicks in until normal temp is reached. Question is why do they vibrate? and are they the right fans even without the two center relays attached to them in the middle? Please advise. Thank you.
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post #2 of 10 (permalink) Old 07-04-2011, 05:27 PM
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Dorman's 620-005 is a one-size-fits-all years, badges, and engines LH cars '98 thru '04 even though there are two different OEM fan designs depending on year and engine.

Regarding the vibration, if it's installed correctly (all screws installed and tight, blades not hitting anything), then they should give you another one or your money back.

You might have a bad fuse or fan relay.

Last edited by peva; 07-04-2011 at 08:29 PM.
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post #3 of 10 (permalink) Old 07-04-2011, 05:43 PM
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Vibration sounds like a defective unit. Are you referring to pins in the electrical connector when you say "they did not have two center relay plug ins on the fan" and is the main electrical connector you're talking about or electrical connectors on each of the fan motors?
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post #4 of 10 (permalink) Old 07-04-2011, 08:04 PM
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Quote:
Originally Posted by Ronbo View Post
Vibration sounds like a defective unit. Are you referring to pins in the electrical connector when you say "they did not have two center relay plug ins on the fan" and is the main electrical connector you're talking about or electrical connectors on each of the fan motors?
Ronbo - If you look at the cooling fan schematics in the later year FSM's, you will see the two types of fan assemblies. The one for 2.7 engines have dual-winding fan motors and no relays on the fan assembly, while the non-2.7 fan assembly motors each have a single winding and there are two relays built into the assembly.

I assumed that the lack of those two relays is what Mr. Mosheen is noticing on the Dorman assembly.
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post #5 of 10 (permalink) Old 07-04-2011, 08:08 PM
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I was trying to clarify what was going on. Don't mind me! I don't know JackSheet. Carry on.

Vibration is not a good thing though.
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post #6 of 10 (permalink) Old 07-04-2011, 11:27 PM Thread Starter
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Correct peva, 3.5 HO with the relays built into the fan assembly, the vibration is bad, like at a stand still and with these fans I'm assuming low speed on the fan is gone? They run alot with the a/c on. Gonna ck on a price for the factory replacements, I get a hefty discount so I may go the factory replacement route.
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post #7 of 10 (permalink) Old 07-04-2011, 11:29 PM
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Quote:
Originally Posted by peva View Post
Ronbo - If you look at the cooling fan schematics in the later year FSM's, you will see the two types of fan assemblies. The one for 2.7 engines have dual-winding fan motors and no relays on the fan assembly, while the non-2.7 fan assembly motors each have a single winding and there are two relays built into the assembly.

I assumed that the lack of those two relays is what Mr. Mosheen is noticing on the Dorman assembly.
Again..I don't know jack sheet...carry on.
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post #8 of 10 (permalink) Old 07-05-2011, 02:12 AM
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Might check ebay, aftermarket complete fan/shroud setup was running about $125.00. A bit louder than OEM but less than 1/2 dealer price.
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post #9 of 10 (permalink) Old 07-05-2011, 02:14 AM
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Ronbo's house of spare LH parts has new fan assemblies for $95 + actual shipping!

Contact Ronbo if interested.

I have two in stock for the 2nd gen LH.

Last edited by Ronbo; 07-05-2011 at 02:17 AM.
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post #10 of 10 (permalink) Old 07-07-2011, 09:35 AM Thread Starter
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I have the aftermarket fans already installed, they are like off balance when they kick on and I'm guessing they have only one speed of high unlike my factory ones which have high and low speeds, do both metal clips one on the top and bottom have to be installed when putting these fans in? Would this cause the vibrating from the fans threw the entire car when there running if the bottom clip wasn't installed? Thinking I should just pull these aftermarket dorman's out and just replace the motors in my factory setup and call it a day, if those aftermarket are loud and vibrate who want's a part like that, I'll pay the extra I guess. Please advise.
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