bad idle.... - Honda Prelude Forum

Nver2loud · 09-26-2002, 03:26 PM

Hey guys, i have gone through some extensive motor work which i wont get into, but i have a custom made tubular intake manifold....I have rigged up my evac so that it will work, and yes i made sure there is coolant going through it as well, but i do not have the fast idle valve that usually sits under the throttle body, that is blocked off with a plate...its a bored out throttle body with a new plate. My idle sits at about 2k rpm when the motor is cold, and idles almost rock steady at that...as soon as it hits the 1/4 bar on our temp guage, the car wont idle normal at all...it goes between 1k and 3k rpm every second or so. any ideas??? PLEASE?
thanks, Josh
btw, please email me at Nver2loud@hotmail.com so i can get faster replies

Brady92/4WS · 09-26-2002, 03:56 PM

glad to see you joined the board.

4thGVtec · 09-26-2002, 10:10 PM

are you sure its not a vaccum leak somewhere?

Absolut · 09-27-2002, 12:02 PM

Check your TPS reading at idle. Make sure its below .45v

Nver2loud · 09-28-2002, 12:48 AM

nevermind guys, i fixed it...i guess when JG made bored out my throttle body they kinda ****ed up...and my custom made intake manifold didnt help...i made a bracket deal to put in my evac and then my throttle plate was opened a bit too far and was confusing my ecu, i shut it all the way, and it idles at about 1100 rpm now, they must have messed up a bit, my thorttle plate was not exactly made perfectly round. so it is allllllllllll good now

thanks guys
Later, Josh
pics up soon