hey guys....i need a lilttle help here.....my car is an 89 si with a B18a1....the car is idling from 1000-2000 rpm jumping up n down when u turn it on and starts to warm up....someone told me to change the fast idle....i did, and its still idling like that, i dont kno what it is???

Also...my pr4 ecu is throwing codes 7, 16, 43 ...any idea??

 

if it is the same as on other ECU's
Then 7 is your Throttle position sensor
16 is the fuel injection
and 43 is fuel supply


I don't know if I am allowed to post a link to another forum .. but whenever I have ECU trouble codes .. I use this list ...
http://www.hondacivicforum.com/m_45386/tm.htm
Good luck

Phil

 

but i also noticed that my check engine light doesnt even come on.

but i kno it works because when i unplug something, it does come on.


any idea???...is that normal?

 

1. It could be the ECU, if it blink in the computer it should show up on the dash so
if i were you, i would get another ECU, even if the stock CRX SI or Civic SI. It
should still turn on and the check engine light will go on if those codes are
really the problem. Just remember to take of the negative battery post before
you switch ECU's.

2. If you changed the ECU and you get the check engine light on the cluster and
its throwing the same codes on the ECU, then I would probably adjust the TPS
on your car or try a different throttle body that is in good working condition. If
your car has a rought idle, it probably has a vacuum leak somewhere. It could
be between the throttle body and the intake manifold or one of the hoses.