bouncy idle common problem how to adjust tps!!!! - Honda Prelude Forum

toofastprelude · 08-12-2004, 12:14 PM

have everything double checked. there are no vacuum leaks, cleaned iacv valve. replaced all hoses. blead radiator coolant. still have the surging idle. WE NEED A WRITE-UP ON HOW TO ADJUST TPS. if someone has a helms this would be a great deal of help to many of us. also my car idles normal when i press the brakes in really hard. anyone else ever have that problem? could i have a faulty brake booster? i already replaced the rubber hose and valve that coonects booster to manifold and still same problem.

toofastprelude · 08-17-2004, 01:20 PM

so no one knows how to adjust tps?

tokenAZNguy040 · 08-20-2004, 12:49 AM

is your check engine light coming on at all??

delguiner · 08-20-2004, 06:41 AM

if you have a H23 a common problem with those cars is the FAST IDLE VALVE which is located right under the throttle body (its actually part of the throttle body)

toofastprelude · 08-20-2004, 08:17 AM

fast idle already bypassed, cel coming on for egr which has been removed. cleaned iac already too and bypassed the coolant lines for it.

grlielude · 08-20-2004, 10:11 AM

have you guys checked to make sure you valve cover isn't leaking? If you torqued the cover on too tight it can pinch the gasket and create a vaccum leak.

Also try the soapy water or carb cleaner trick around vaccum lines to see if there are any leaks there.

toofastprelude · 08-20-2004, 11:01 AM

i am starting to think brake booster. just for the fact when i mash them down really hard it idles normal. but i would like to be sure that is the problem, that booster is a pita to change.

Lucke · 08-20-2004, 01:14 PM

um, the tps is only adjustable on the JDM engines, but even then that won't do anything but throw a code 7 if its not adjusted properly.