Low idle in Drive
Thread Starter
Staging Lane
Joined: Dec 2020
Posts: 88
Likes: 16
Low idle in Drive Hi,
I have a 1999 LS1 with a 4L60E transmission. Its a drive by cable throttle. I've adjusted the idle to around 800 rpm by adjusting the nut on the cable bracket next to the throttle body. This seems fine when its in Park or Neutral. However, when in Drive the idle drops to around 600 rpm. Is this normal? Could the IAC be dropping the idle down? If so, is there a way to set the idle to 800 rpm ?
Cheers,
Greg
I have a 1999 LS1 with a 4L60E transmission. Its a drive by cable throttle. I've adjusted the idle to around 800 rpm by adjusting the nut on the cable bracket next to the throttle body. This seems fine when its in Park or Neutral. However, when in Drive the idle drops to around 600 rpm. Is this normal? Could the IAC be dropping the idle down? If so, is there a way to set the idle to 800 rpm ?
Cheers,
Greg
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
Likes: 256
Hi,
I have a 1999 LS1 with a 4L60E transmission. Its a drive by cable throttle. I've adjusted the idle to around 800 rpm by adjusting the nut on the cable bracket next to the throttle body. This seems fine when its in Park or Neutral. However, when in Drive the idle drops to around 600 rpm. Is this normal? Could the IAC be dropping the idle down? If so, is there a way to set the idle to 800 rpm ?
Cheers,
Greg
I have a 1999 LS1 with a 4L60E transmission. Its a drive by cable throttle. I've adjusted the idle to around 800 rpm by adjusting the nut on the cable bracket next to the throttle body. This seems fine when its in Park or Neutral. However, when in Drive the idle drops to around 600 rpm. Is this normal? Could the IAC be dropping the idle down? If so, is there a way to set the idle to 800 rpm ?
Cheers,
Greg
Cheers
Cliff Claven
Thread Starter
Staging Lane
Joined: Dec 2020
Posts: 88
Likes: 16
No its not dying. Just trying to keep the idle up so there's a bit more oil pressure at idle. Sounds like its normal behaviour.
Cheers,
Greg
PS> if I set the idle higher when in Park, will I get a higher idle in Drive, or is it purely a function of the IAC and the ECU as to what te idle is set to in gear?
\\
Cheers,
Greg
PS> if I set the idle higher when in Park, will I get a higher idle in Drive, or is it purely a function of the IAC and the ECU as to what te idle is set to in gear?
\\
