swapped the cx motor for a d15bvtec and motor idles weird cold,but when it warms up it is fine, this only happens when i use the p08 ecu, but works fine with the p06 cold or warm....help me out with this guys...

 

More details. "Idle wierd" can mean a bunch of stuff. Most cars when cold run high idle around 1500rpms and slowly goes down as the car warms up.

 

my bad, when i start it up it goes to about 1500 then drops down to like 400 and sometimes stalls, it keeps doing that about 10 times before its warms up, this only happens with the p08 ecu but the motor is fine using the p06

 

bump.i need some help

 

probably a shotty fast idle falve.

or might be the eacv
theres 2 valves. with a remedy for each thats ez and fixes most ppls idle problems.

eacv, on back of intake manifold, it has a big cylinder on it. and 2bolts,
take it off and make sure the screens in it are clean and free,
if not use some carb cleaner to clean em out.

fast idle valve, underneath throttle body, its got vacuum and coolant running to it.
take it off, and undo the bolt on the side of it,
theres a wierd plastic screw thingie in there. if its loose, screw it in so its snug,
not super tight just so it wont fall out.

Better info can be found in a search, but thats the jist of it.

 

aight thanks i'll give it a try.......but it works fine with the p06 ecu....only the p08 ecu makes it idle wierd

 

ttt

 

So your idle goes up, comes down until it warms up.

something makes me think that ECU is automatic. Open in up and show us a good high resolution picture. Or you could just search how 5spd ecu is supposed to look like. Either way you can chip it really easy.

 

yea i opened it up and checked a picture too and it looks like a 5 speed ecu..but i'll try to get a pic for u too

 

ttt need some help

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by red_EH2 &raquo;</TD></TR><TR><TD CLASS="quote">yea i opened it up and checked a picture too and it looks like a 5 speed ecu..but i'll try to get a pic for u too</TD></TR></TABLE>

what did you compare it too???

 

compared it to a 5spd pic on pgmfi.org and it looks like the 5spd

 

bump