1985 Chevrolet S-10 4 wheel drive

Tiny
JEWOOD3310
  • MEMBER
  • 1985 CHEVROLET S-10
  • 140,000 MILES
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?
Tuesday, October 29th, 2013 AT 3:44 PM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
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?
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Tuesday, October 29th, 2013 AT 6:55 PM
Tiny
JEWOOD3310
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  • 5 POSTS
No it goes straight back from the acculator
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Tuesday, October 29th, 2013 AT 7:34 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Where does it go to?
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Wednesday, October 30th, 2013 AT 4:40 AM
Tiny
JEWOOD3310
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  • 5 POSTS
It goes to a things that looks like a switch that 3 hoses are connected to that screws into transfer case.
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Wednesday, October 30th, 2013 AT 11:16 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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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.
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Wednesday, October 30th, 2013 AT 4:49 PM
Tiny
JEWOOD3310
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  • 5 POSTS
Thanks Jacob will try that.
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Wednesday, October 30th, 2013 AT 5:18 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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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
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Wednesday, October 30th, 2013 AT 5:22 PM
Tiny
JEWOOD3310
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  • 5 POSTS
Jacob that is exactly what the problem was, the switch was bad. Thanks so much for your help.
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Thursday, October 31st, 2013 AT 7:29 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Glad to help. Let us know if you have questions in the future.
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Friday, November 1st, 2013 AT 5:13 AM

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