RE: Fast Idle - Vacuum Leak?

Corvette Forums Corvette Classifieds Gallery Corvette News Member List Search Sponsors
Forum FAQ Calendars Contact Us Corvette Recalls TSBs Corvette Timeslips Register Login

RE: Fast Idle - Vacuum Leak?

Printable Version

Corvette >> Corvette Models >> Corvette C3 Forum >> RE: Fast Idle - Vacuum Leak?

Page: << < prev 1 [2]

Message

<< Older Topic Newer Topic >>

RE: Fast Idle - Vacuum Leak? - 4/14/2008 6:44:38 PM

Dj Envy

Posts: 38
Joined: 1/24/2008
Status: offline

I started up the car and the idle was the usual low, awesome sound for a few mins. I was talking to my friend, then it just scared the s*** out of me and went really high.

(in reply to 73shark)

Post #: 11

RE: Fast Idle - Vacuum Leak? - 4/14/2008 6:47:00 PM

73shark

Posts: 1129
Joined: 4/18/2006
Status: online

Does your idle stop solenoid have power to it any time the key is in the run position?

_____________________________

So many toys, so little time

(in reply to Dj Envy)

Post #: 12

RE: Fast Idle - Vacuum Leak? - 4/14/2008 6:52:11 PM

Dj Envy

Posts: 38
Joined: 1/24/2008
Status: offline

Not sure what that means.. lol
Since then I readjusted the carb.. but I've never gotten it to be the same. I wish I could get that sound back. What should I check?

(in reply to 73shark)

Post #: 13

RE: Fast Idle - Vacuum Leak? - 4/14/2008 7:09:37 PM

73shark

Posts: 1129
Joined: 4/18/2006
Status: online

On the driver's side of the carb, I believe that there's a solenoid which on most cars was to control run-on when you turned it off. On early years, it was used to boost the idle when the A/C was turned on. That's why I asked if it has 12V with the key in the run position. If so, then that's where you adjust your idle speed. The idle screw on the carb should be set at the solenoid off idle speed or just something appreciably slower than your idle speed. That way when you shut it off, the solenoid allows the butterflys to almost close which prevents run-on or dieseling.

_____________________________

So many toys, so little time

(in reply to Dj Envy)

Post #: 14

RE: Fast Idle - Vacuum Leak? - 4/14/2008 7:33:51 PM

Dj Envy

Posts: 38
Joined: 1/24/2008
Status: offline

I have an Edelbrock carb on it now.. Should I still look around there for something like what you describe or could there be something else?

(in reply to 73shark)

Post #: 15

RE: Fast Idle - Vacuum Leak? - 4/15/2008 8:51:28 PM

73shark

Posts: 1129
Joined: 4/18/2006
Status: online

I'm sorry, I thought you still had a Q-jet. I know nothing about the Edelbrock. Is it their Q-jet clone?

_____________________________

So many toys, so little time

(in reply to Dj Envy)

Post #: 16