miss in ej22 till warm

chubby37 · Post by **chubby37** » Sat Jun 14, 2008 1:33 pm

just did the heads on my ej22 and now for some reason i have a miss[like it bogging down] but only till it warms up and them it fine...cant seem to work it out..once warmed up i can up it and no problems.any ideas would be good....was thinking a spark lead or plug?

Matatak · Post by **Matatak** » Sat Jun 14, 2008 1:35 pm

Coolant temp sensor for the ECU? (not the one for the dash)

they can cuase it to run crap when cold

chubby37 · Post by **chubby37** » Sat Jun 14, 2008 1:40 pm

oh ok...were is that?....couse when i take off cold it bogs and sounds off tune but after about 3 minuts of driving up comes up fine and goes like normal...well better then normal now with decked heads...its just a pain for the first bit of driving.

Matatak · Post by **Matatak** » Sat Jun 14, 2008 1:52 pm

that would be around the back under the Intake manifold near the IACV.

there a single wire one which controls your dash and right next to that is a 2? wire one which will go to your ECU

i think they stick into that Heater line running frmo teh top hose under the manifold to back of engine sumwhere.

But i wuldnt be sure what your problem is. thats just the first thing which comes to my mind

chubby37 · Post by **chubby37** » Sat Jun 14, 2008 1:54 pm

any help and ideas are great...gives me things to look at...cheers

chubby37 · Post by **chubby37** » Sat Jun 14, 2008 3:31 pm

ok..tried to get temp sensor wire off....would be easier to flap my wings and fly...they dont make it easy to get to....

steptoe · Post by **steptoe** » Sun Jun 15, 2008 2:10 am

sounds like my L turbo miss thought to be a lifter causing the problem - others say valve spring weak - yet to do anything about it

littlewhiteute · Post by **littlewhiteute** » Sun Jun 15, 2008 6:56 am

Weak valve springs don't cause a miss at idle or cold only.
If the spring was weak enough to miss, the engine would keep missing going up the rev range and probably drop a valve.

Morcs · Post by **Morcs** » Mon Jun 16, 2008 5:24 pm

My ej 20g (turbo) had a miss when cold ended up tracing it back to a coilpack swap the components over eg leads, plugs etc see if i goes with it if it does you can narrow it down a lot faster.