Moan/Fog Horn Sound May Be Heard While Turning at Slow Speed on Dodge Grand Caravan

A moaning or fog horn sound may be heard while turning at a slow speed. Installing a finned power steering cooler will help alleviate the problem, but it may be necessary to replace the power steering rack.

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Average mileage: 93,130 (19,500–166,000)
6 model years affected: 1996, 2001, 2002, 2003, more2004, 2005
13 people reported this problem
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problem details
2005 Dodge Grand Caravan 75,000 mi,
Moaning, vibrating noise heard/felt when turning the steering wheel at slow speeds. Replaced steering pump reservoir, which seemed to help, somewhat. I fixed the problem by simply adding power steering fluid to the reservoir approximately 3/8" over the max fill line. The noise is gone completely. Try this before replacing anything.
2002 Dodge Grand Caravan 72,000 mi,
Got the same problem. I saw somewhere that it may be just a filter in the power steering oil reseervoir. Looks like cleaning or replacing this filter would eliminate the noise.
2005 Dodge Grand Caravan 19,500 mi,
moan/fog horn sound not only while turning but while in park when van first start up. Have not fix problem trying to get the right answer.
2003 Dodge Grand Caravan 70,413 mi,
while pulling out from a parking space, during right turns. a monaing or grumpling sound can be herd.
2005 Dodge Grand Caravan 99,000 mi,
same problem