i have a b18a1 in my crx and sometimes the idle will jump up and down when i come to a stop and then it will stop on its own.

there is no check engine lights on and idk what the problem is. maybe a sensor is bad but not showin up on the CEL?

can someone help me?

 

Any codes on ecu??? If not could be EACV or fast idle valve

 

idk anything bout the ecu stuff. how do i check for codes on the ecu?

 

This helped stabalize mine alot.
https://honda-tech.com/zerothread?id=1575913

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90_Si &raquo;</TD></TR><TR><TD CLASS="quote">This helped stabalize mine alot.
https://honda-tech.com/zerothread?id=1575913</TD></TR></TABLE>

Try this first, if it doesn't fix it, try cleaning the FITV.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by durfeec &raquo;</TD></TR><TR><TD CLASS="quote">idk anything bout the ecu stuff. how do i check for codes on the ecu?</TD></TR></TABLE>

Pull the carpet back from the passenger side floor board. There will be a big gold bracket that protects the ECU. On that bracket, there will be a clear lens, like a peep hole. From there, a light will be flashing if there is a problem with something electrically. If there is a light flashing, read the flashes. For each LONGER blink will be multiples of 10. The shorter blinks indicate 1's. After a long pause, it will either throw a different code, or redo the same code. Write down the number of the code and look it up.

For example: two long blinks and then one short blink will indicate a code 21, vtec solenoid/spool valve.

 

I think on non obd it is only short blinks, if it is obd1+ it will have the 10s and ones blinks.

 

would any of these things give me bad gas mileage?

 

Check your coolant level.

 

why would that give me bad gas mileage? wouldnt that just make my engine overheat?

 

Did I say it would give you bad gas mileage?

The title of this thread is "idle problems"

When I went from DPFI to MPFI I was so excited that it started I forgot to put the coolant back in. I took it for a spin around the block and every time I stopped the idle was surging.

I checked a bunch of other crap before I realized I had forgot to put the coolant back in.

 

Make sure that you don't have any vacuum leaks or loose vacuum hoses, especially by the intake manifold. Check the TPS with an ohmmeter. You might be able to find Specs somewhere in here.