idle problem
Thread Starter
Junior Member
Joined: Jul 2012
Posts: 80
Likes: 0
From: New York
Car: 1984 Trans Am
Engine: 305 cui
idle problem
hey guys
so i recently rebuilt my carb bought the kit did the Gaskets and junk then sent it out to a shop my buddy owns that was able to do the solenoids and lower body (throttle went bad) so after putting it back in i noticed the car handles a lot better and no more sticking throttle. but now i also seem to have a nasty vacuum leak, i also noticed it sputters too when at idle at a stop light or when in park. but more over i constantly have to adjust the idle. one day it will be at 500 or 400 RPM (very low) adjust to 600-700 RPM and set for the day, in another day it will jump from the cushy idle i set to 1,000 RPM! so im always driving with a wrench. i don't know what to do any more so i really need the help!
on a side note to i also notice my Check Engine Light come on occasionally while driving only to go off a few seconds to a minuet later. i don't know whats causing it but any ideas truly do help
thanks!!
so i recently rebuilt my carb bought the kit did the Gaskets and junk then sent it out to a shop my buddy owns that was able to do the solenoids and lower body (throttle went bad) so after putting it back in i noticed the car handles a lot better and no more sticking throttle. but now i also seem to have a nasty vacuum leak, i also noticed it sputters too when at idle at a stop light or when in park. but more over i constantly have to adjust the idle. one day it will be at 500 or 400 RPM (very low) adjust to 600-700 RPM and set for the day, in another day it will jump from the cushy idle i set to 1,000 RPM! so im always driving with a wrench. i don't know what to do any more so i really need the help!
on a side note to i also notice my Check Engine Light come on occasionally while driving only to go off a few seconds to a minuet later. i don't know whats causing it but any ideas truly do help
thanks!!
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Retrieve the trouble code(s) being set to at least find out what the computer thinks the problem is.
If you have a nasty vacuum leak, that needs to be fixed before you can expect the car to run correctly.
If you have a nasty vacuum leak, that needs to be fixed before you can expect the car to run correctly.
Thread Starter
Junior Member
Joined: Jul 2012
Posts: 80
Likes: 0
From: New York
Car: 1984 Trans Am
Engine: 305 cui
Re: idle problem
yeah, i asked at my neighborhood auto parts store and the immediately called lout the O2 sensor, i took it out the whole thing was covered completely in soot, really bad too. so i put the new one in and kept the old one. but the light still comes on. as for the vacuum leak, i have a feeling i know what it is now and will get on it, but i still need help with that light
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
It isn't unusual for the O2 sensor to be covered with soot.
A vacuum leak can cause an O2 sensor error code. Get the leak fixed, see what happens.
A vacuum leak can cause an O2 sensor error code. Get the leak fixed, see what happens.
Thread
Thread Starter
Forum
Replies
Last Post





