"84 fast idle?
Thread Starter
Instructor
Joined: Feb 2012
Posts: 187
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From: Rockford Michigan
"84 fast idle?
my wife was driving the '84 yesterday and it had to be boosted when she came out of the restaurant, took it to Firestone (a block away) they installed a new battery and it would not idle below 2 to 23 K...it was late yesterday at closing time so had to leave inside shop...any ideas what to look for? Vac line?
I tried the search/advance search option, couldn't find anything, hard to believe this hasn't been discussed...and if so I couldn't find it..
Best Regards;
Gary
I tried the search/advance search option, couldn't find anything, hard to believe this hasn't been discussed...and if so I couldn't find it..
Best Regards;
Gary
Last edited by GMAN1953; Aug 16, 2012 at 03:46 AM.
Advanced
Joined: May 2009
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From: Pennsauken NJ
Vacume leak would be one guess. Another would be if they couldn't figure out at first how to remove the battery and screwed around with trying to relocate the cruise controll directly above the battery they could have screwed it up.
Thread Starter
Instructor
Joined: Feb 2012
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From: Rockford Michigan
Well I went back today and they said they let the car run for a bit to let the ECM learn again, something about the battery going dead and putting the new one on....not sure but it idles ok now...any ideas?
Advanced
Joined: May 2009
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From: Pennsauken NJ
While it is true the ecm does have to relearn your driving habits it shouldn't effect your idle. Imho I think they were mesing around before they finally realized how to get the battery out. I'm sure it was nothing major and as long as they corrected the problem no harm no foul.
Thread Starter
Instructor
Joined: Feb 2012
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From: Rockford Michigan
Thread Starter
Instructor
Joined: Feb 2012
Posts: 187
Likes: 1
From: Rockford Michigan
Yea..seems to be ok now except according to the electrical test I need to replace the alternator since the output is at 11.980 under load and they suggested I replace and don't drive or the battery would die again...???
While it is true the ecm does have to relearn your driving habits it shouldn't effect your idle. Imho I think they were mesing around before they finally realized how to get the battery out. I'm sure it was nothing major and as long as they corrected the problem no harm no foul.
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Joined: May 2009
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From: Pennsauken NJ
I have had my battery disconnected numerous times and never had a problem with the iac or any form of high idle upon start up. The alternator should have an output of just above 14 volts so that 11+ volts your getting is low.
Thread Starter
Instructor
Joined: Feb 2012
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From: Rockford Michigan
I ordered a alternator from NAPA should be in Saturday morning so I probably shouldn't drive to the Woodward Dream Cruise this weekend... sure don't want to break down in that traffic... I live on West side of Michigan and Dream Cruise on East side.... planned on leaving today at noon...ugh!!
Racer
Joined: Oct 2011
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From: state of insanity
So; your honest john firestone dealer put in a new battery, screwed up the cruise cable, left it set overnite,charged you for a new battery and install, and the alternator is junk,and now you have to replace that. 
sorry to say but sounds to me like you've been had,or your wife was. a dead or low battery will recharge once the original problem is corrected. where is this dealer so i can tell my wife never to go there.
sorry to say but sounds to me like you've been had,or your wife was. a dead or low battery will recharge once the original problem is corrected. where is this dealer so i can tell my wife never to go there.
Thread Starter
Instructor
Joined: Feb 2012
Posts: 187
Likes: 1
From: Rockford Michigan
So; your honest john firestone dealer put in a new battery, screwed up the cruise cable, left it set overnite,charged you for a new battery and install, and the alternator is junk,and now you have to replace that. sorry to say but sounds to me like you've been had,or your wife was. a dead or low battery will recharge once the original problem is corrected. where is this dealer so i can tell my wife never to go there.
sorry to say but sounds to me like you've been had,or your wife was. a dead or low battery will recharge once the original problem is corrected. where is this dealer so i can tell my wife never to go there.
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I don't know if you had this problem or not, but I had my 84 high idle for a while until I found that the plastic, throttle cable retainer was not fully inserted into the metal bracket between the throttle bodies. This caused enough tension on the throttle cable to not let the butterflies close enough.
Pro
Joined: Sep 2012
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From: Seattle Wa
I have always had much better luck doing it this way, as apposed to using the forums search engine. h
Thread Starter
Instructor
Joined: Feb 2012
Posts: 187
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From: Rockford Michigan
Great info! Thanks
Try typing your question into your adress bar at the top of your computer, then go to the forum from there. Example: "84 corvette fast idle". https://www.google.com/search?q=84+f...w=1022&bih=707
I have always had much better luck doing it this way, as apposed to using the forums search engine. h
I have always had much better luck doing it this way, as apposed to using the forums search engine. h
Thread Starter
Instructor
Joined: Feb 2012
Posts: 187
Likes: 1
From: Rockford Michigan
Thank You!!
Try typing your question into your adress bar at the top of your computer, then go to the forum from there. Example: "84 corvette fast idle". https://www.google.com/search?q=84+f...w=1022&bih=707
I have always had much better luck doing it this way, as apposed to using the forums search engine. h
I have always had much better luck doing it this way, as apposed to using the forums search engine. h
I don't know if you had this problem or not, but I had my 84 high idle for a while until I found that the plastic, throttle cable retainer was not fully inserted into the metal bracket between the throttle bodies. This caused enough tension on the throttle cable to not let the butterflies close enough.