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1985 Chevrolet S-10 4 wheel drive

1985 CHEVROLET S-10
140,000 MILES
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JEWOOD3310
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  • 5 POSTS
I replaced the acculator on my 4 wheel drive and also replaced the vacumn line. Now the truck will not go out of 4 wheel drive. The only way I can get the truck to go out of 4 wheel drive is to take the vacumn hose off. Could the vacumn lines be hooked up wrong?
Oct 29, 2013 at 8:44 AM
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JACOBANDNICKOLAS
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These are all different, so bear with me. If you follow the vacuum supply back to the transfer case, does it go through a switch?
Oct 29, 2013 at 11:55 AM
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JEWOOD3310
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No it goes straight back from the acculator
Oct 29, 2013 at 12:34 PM
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JACOBANDNICKOLAS
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Where does it go to?
Oct 29, 2013 at 9:40 PM
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JEWOOD3310
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It goes to a things that looks like a switch that 3 hoses are connected to that screws into transfer case.
Oct 30, 2013 at 4:16 AM
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JACOBANDNICKOLAS
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That's the switch I was thinking of. Check to see if it is working. They corrode inside and freeze up. As a result, this type of thing happens or the 4wd doesn't work at all.
Oct 30, 2013 at 9:49 AM
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JEWOOD3310
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Thanks Jacob will try that.
Oct 30, 2013 at 10:18 AM
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JACOBANDNICKOLAS
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Glad to help. However, check it before you get a new one to make sure it is the problem.

Let me know how things go for you.

Joe
Oct 30, 2013 at 10:22 AM
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JEWOOD3310
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Jacob that is exactly what the problem was, the switch was bad. Thanks so much for your help.
Oct 31, 2013 at 12:29 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Glad to help. Let us know if you have questions in the future.
Oct 31, 2013 at 10:13 PM
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