High Idle Issue - Page 2 - ZR-1 Net Registry Forums

cuisinartvette · 09-11-2007

Is it normal for the pump to come on at all with the motor off and the key in "ON" position, should you never hear it?

1990 quasar blue · 09-11-2007

Quote:

Originally Posted by cuisinartvette

Is it normal for the pump to come on at all with the motor off and the key in "ON" position, should you never hear it?

About two years ago mine would give a quick blip (fraction of a second) every minute or so. I pulled the plenum and replaced the spider assembly. After that it would run once when the key was first turned on and then be silent. I stopped timing it after twenty minutes. Now it's back down to every two minutes again. If you have a leak just get a vacuum gauge and pull the plenum. It's pretty easy to track it down.
http://www.corvetteactioncenter.com/...threadid=14272

cuisinartvette · 09-11-2007

Cool...Sounds like I may have a slight leak..
I get a quick blip every few seconds before I turn it on. Runs good though..
Good excuse to port I guess.

09-11-2007	#11
cuisinartvette Join Date: Aug 2005 Location: San Fernando Valley, CA. Posts: 896	Re: High Idle Issue Is it normal for the pump to come on at all with the motor off and the key in "ON" position, should you never hear it? __________________ 1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj.

09-11-2007	#13
cuisinartvette Join Date: Aug 2005 Location: San Fernando Valley, CA. Posts: 896	Re: High Idle Issue Cool...Sounds like I may have a slight leak.. I get a quick blip every few seconds before I turn it on. Runs good though.. Good excuse to port I guess. __________________ 1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj.