Supra Forums banner

1 - 2 of 2 Posts

·
Registered
Joined
·
34 Posts
Discussion Starter #1
Hello guys, I recently swapped a new motor in my supra thank to quarantine and have been stuck on one issue. The car idles very rough. It jumps between 500-1000 rpms but revs up fine. I've checked for vaccum leaks and couldnt find anything. However, weirdly enough when i press the brake pedal a few times it'll adjust idle by itself so it seems like a vacuum issue.
 

·
Registered
1987 Supra Turbo R154 Pearl White, Blue Velour
Joined
·
218 Posts
Did you use all new vacuum tubing? I recently redid mine and the snug fit helps.

Is it all stock? Have you traced all the tubing? There is one on the bottom of the accordion hose that goes to the power steering pump that I forgot a while back. Also, I accidentally left a hose off the T connector over near the cruise control when I disassembled everything on top for valve cover replacements etc.

What happens when you turn on the AC?

The brake pedal magic is awesome! haha If you put your thumb on the throttle and just put gentle pressure on it, does it idle better?
 
1 - 2 of 2 Posts
Top