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  #1  
Old 11-20-2004, 06:10 PM
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Join Date: Nov 2000
Location: Vernon, CT
Posts: 1,846
engine w/n shut off, which s.o.v is bad?

Today I went to turn the engine off and she kept running. Used the shut off lever on the pump to shut it down. I did notice that when I turned the key off, the rpms dropped to 500, but kept running. So, where would the problem be, the shutoff valve on the pump, or the one at the ignition? What is the fastest way to isolate the faulty part. I looked at Fastlane and the pump sov is about $60 and the one at the ignition is $26.
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1999 MB SL500 (101,000 mi)
1983 Porsche 911SC (149,000 mi)
2004 Volvo V70 2.5T (205,000 mi)
2014 Tesla Model S 85 (75,000 mi)
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  #2  
Old 11-20-2004, 06:17 PM
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Join Date: Aug 2000
Location: Holland, MI
Posts: 1,316
Um, could be neither... you could have a vacuum leak somewhere.

Find a way to check the integrity of the vacuum lines before you drop $$ on any valve(s.)

You can apply vacuum directly to the shut off valve with a vacuum tester, which should stop the engine, to prove the valve works.

You can also measure the vacuum in the line (unplugged from the shut off valve) with the engine running when you turn the key off, to prove the valve works.

My bet? Vacuum leak(s) somewhere. Good luck with the hunt.

Also, search on vaccum leaks and you'll find a lot of threads.

Best Regards,
Jim
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  #3  
Old 11-20-2004, 06:30 PM
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Join Date: Nov 2000
Location: Vernon, CT
Posts: 1,846
After I posted the question, I thought about the possibility of an overall vaccuum leak. The trans. is shifting normal, but I didn't pay attention to the operation of the locks. I will have buy a vaccuum tester, been meaning to buy one anyways.
__________________
1999 MB SL500 (101,000 mi)
1983 Porsche 911SC (149,000 mi)
2004 Volvo V70 2.5T (205,000 mi)
2014 Tesla Model S 85 (75,000 mi)
PCA member
MBCA member
Reply With Quote
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