LT 4 Idle problem
Thread Starter
1st Gear
Joined: May 2022
Posts: 1
Likes: 0
LT 4 Idle problem
I have a 96 LT4 in a 1932 Ford street rod. I has run great for almost 50K miles. It starts when cold as it always has, Idles up and almost immediately starts to come down to normal idle speed. After driving it and reaching normal running temps, when I turn it off and restart it, the idle races to maybe 1500 RPM's and take a long time to settle back down to the normal idle speed. I recently replaced the O2 sensors, but that didn't seem to help. I do not have a scan tool so I'm really "shooting in the dark". Any ideas?
Burning Brakes
Joined: Jun 2021
Posts: 1,199
Likes: 449
From: NJ
I have a 96 LT4 in a 1932 Ford street rod. I has run great for almost 50K miles. It starts when cold as it always has, Idles up and almost immediately starts to come down to normal idle speed. After driving it and reaching normal running temps, when I turn it off and restart it, the idle races to maybe 1500 RPM's and take a long time to settle back down to the normal idle speed. I recently replaced the O2 sensors, but that didn't seem to help. I do not have a scan tool so I'm really "shooting in the dark". Any ideas?
