Help???

98 stock accord

I try to clean my throttle body today by spraying some cleaners and after that, my engine almost did not start, it was chocking when starting. After it starts, my engine starts to idle up and down, not steady at all. Then it throw a check engine light on with code P0505 (idle air control system malfuntion) and P1399, (not sure what this code is). I did my research and 2 things comes up, either it's a vacumn leak or the IACV is bad.

Does the IACV not like the throttle body cleaner? How can a vacumn leak occur when all I did was remove the intake tube and spray the throttle body. I did not disconnect anything else.

These are the 2 test that I've done.
1. I try to remove the IACV when the engine is running and the idle drops like it wants to dies but it comes right back up to normal immiately.
2. I try to plug the IACV hole inside the throttle body when the engine is running and it does the same.

When doing this test, is the idle suppose to come back up after it drop? Does anyone know what the problem might be.

Any help is appreciated!!!


Modified by 88hondacrx at 8:41 AM 10/22/2006

 

Anyone???

 

Ok, I went ahead and changed out the IACV and now it idles fine when I am in gear but idles up and down when put back in park. Any comments on why this is so?

 

I am also facing the same problem right now. You said the problem still persists even after replacing the IACV (Idle Air Control Valve). I was also getting the same P0505 code, not sure if it was related precisely to IACV or it is an erroneaous diagnostic. Please let us know how you have resolved the issue. Thanks

 

I will keep you postedif I see any further input on this issue