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08-19-2013, 02:15 PM | #1 |
Registered User
Join Date: Aug 2013
Location: Delta, BC
Posts: 3
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Vacuum Pump
I have a 1987 Chevy Van 30 with a diesel engine. I have trouble with the cruise control and the shift feels soft. Does anyone know how many pounds of vacuum the vacuum pump should have?
Thanks, Ted |
08-19-2013, 03:04 PM | #2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,731
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Re: Vacuum Pump
Should be at least 20".
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08-19-2013, 03:42 PM | #3 |
Registered User
Join Date: Aug 2013
Location: Delta, BC
Posts: 3
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Re: Vacuum Pump
Thanks for the info. We'll give that a try.
Ted |
09-04-2013, 12:23 PM | #4 |
Registered User
Join Date: Aug 2013
Location: Delta, BC
Posts: 3
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Re: Vacuum Pump
I tested the vacuum pump and it showed 25. I had all the electrical components tested, all checked out good. I replaced the transducer (the part that actually pulls the throttle). Now the cruise control works good. I went to the auto wreckers and spent a grand total of $20, which included the transducer & a windshield visor.
Thanks again, Ted |
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