Hi all ! Today I worked on my car and now it won't idle. changed to afpr (stock pressure setting for now). SLP runners and ported plenum. checked everythind, installed slightly used bbk throttle body. starts right up but idles high. like 1500 rpm- idle adjustment screw is all the way out. looked for vacumn leaks and can't find anything wrong. the t.b. came off a speed/density car and I am mass air. Does that make a difference? My car-88 350 tpi w/700R4.

 

85-88 used a different throttle body then the speed density. Could be your tps sensor moved. It will cause high idle. You have to have it set in the same spot as it was on the original TB or you have to readjust it.

 

Thanks !! I used the same tps that was on the new one. Allready tried moving back and forth and then started car, no change. should I try the tps from the old throttle body?

 

OH !! Problem solved, I was sitting in the bar tonight with a beer and my no2 installation manual. Looking at the relocation bracket instructions and I remembered I never reseated the throttle cable I removed when I changed the plenum. Went out to the parking lot, seated the cable- started the car and grabed my t-15 torx driver-set the idle and all was right in the world. talk about stupid mistakes!

P.S. the new parts kick butt!! definatly faster! I was worried 'cause I see so much negative stuff about the BBK products on the boards. Tommorow I will try to set the TPS and play with the fuel pressure. And captain, thanks for the help-Mike

 

Cool...good job. Glad you like it. As you said, you may have to reset the tps. It is a sensitive thing. I liked my BBK 58mm when I had it. Its just not as flashy as say the Holley. But it works just the same. I switched to Holley to match my new HSR system. Otherwise I would have kept the BBK. Dont forget your tv cable as well. Is the tranny shifting ok? If not reset that as well.

 

Thank you again, I have seen you posting quite a bit on the boards lately and all your advice seems right on. Now I see your on probation. what gives?

 

Can't really say...or dont want to. Guess I complain too much. Has to do with the regional board I was hanging out at (SW). I dont like it cuz I cant post pics or edit my posts. Being able to post pics helps others. Cant see what the big deal is. I dont even know how long I am on probation for. Noone will tell me. Oh well. Anyway...your welcome.

 

Glad you got it solved Mike, that TB did me right and was always smooth as silk on the throttle.