check your mono valve, although blowing a fuse is not the usual symptom. Worth a look as it is an easy diy and check if the rubber is broken replace it.
m

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Martin Ingram
Colorado Springs
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)