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View Full Version : THE GAUGE THATHE GAUGE SHOWS VAC AND BOOST ON 1990 sc 35th went out



tctc1981hotmail
02-22-2010, 08:04 AM
The gauge that shows when you are using vac boost and etc was working for the first couple of days when i purchased my vehicle it now froze on the center mark. Can someone tell me how to fix this or better yet by this gauge freezing up can it hurt my cars performance 1990 sc 35th thanks for input

Ken Seegers
02-22-2010, 08:16 AM
The gauge that shows when you are using vac boost and etc was working for the first couple of days when i purchased my vehicle it now froze on the center mark. Can someone tell me how to fix this or better yet by this gauge freezing up can it hurt my cars performance 1990 sc 35th thanks for input

It sounds like the either the vacuum line came off the gauge or there is a hole in the line.

the-big-e
02-22-2010, 01:42 PM
Check the hose on the back of the gauge, or it could have come loose from the intake plenum....

KillSwitchNY
02-23-2010, 11:11 PM
haha, at 15psi my stock and aftermarket gauge both went out, The nylon and silicone connector hoses popped off each other. Check that, closest corner to the driver in the engine bay/ good luck.

tctc1981hotmail
03-03-2010, 02:32 AM
Thanks for the comments it was the vacuum hose it came off