I used to have a user name ill-icit_lude but for some reason it wont let me login, Anways I have a 1989 prelude obdo with and obd2 h22 converted to obd1. I have been trying to figure out why when i plug in my brake booster vaccum it idles at about 300 and wants to die after coming down from a little bit of throttle. I checked all of my vaccum connections a 100 times over and there correct. When i have the brake booster unplugged it idles and runs fine. Can anyone help me out here? I have no idea what to do since im not throwing any CEL except for ELD

 

 

car runs fine except for that it runs HELLA rich when the brake booster is unplugged. heres what the idle looks like when I have the brake booster plugged in.

 

boosters can leak through the diaphragm.
have you ever had it off? there is an adjustment to the master cylinder.

 

I wouldnt know because I never touched it when putting the h22 in ughh im so lost with this ****

 

seriously no one has any ideas?>