I got a 94 jdm h22 and the thing runs great untill i have been driving it around and it is at and has been at opperation temp for a while. Then it seems to run like poo. It is almost like my vtec is not coming on. Then while it first warms up it runs hella strong. Any clues i am stumped

 

bump i am stumped

 

describe it more, and ill try to help.

 

like i said the bottom end is fine. At high rpm's it seems like vtec will not engage when i have been driving it around town, but if i get on it right after it warms up it is fine pulls hard and vtec is very noticeable.

I have a 94 h22 with a p28 ecu chipped, i got aem fuel rail and reg cause i thought that it might of been fuel got a new pump and injectors. I also got new wires, plugs, cap, rotor, thermostate, and wired up my msd 6al. Still the same. I wanted to get a new vtec silenoid but i am getting tired of spending money and not fixing the problem.

 

bump for ideas

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blusmke &raquo;</TD></TR><TR><TD CLASS="quote">...a p28 ecu chipped</TD></TR></TABLE>

Get it tuned, lord knows what your tables look like. You could be running very lean after the engine warms up.

Pirate

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PirateMcFred &raquo;</TD></TR><TR><TD CLASS="quote">

Get it tuned, lord knows what your tables look like. You could be running very lean after the engine warms up. </TD></TR></TABLE>

Amen, the man has spoken. Get that shiznit tuned asap, before you blow it. For all you know it might be starving for fuel at top end RPMs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PirateMcFred &raquo;</TD></TR><TR><TD CLASS="quote">

Get it tuned, lord knows what your tables look like. You could be running very lean after the engine warms up.

Pirate</TD></TR></TABLE>

Check your motor oil level just in case too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cpforyou &raquo;</TD></TR><TR><TD CLASS="quote">Check your motor oil level just in case too.</TD></TR></TABLE>

It can never hurt...

 

my buddie hooked up his hondata to my car and turned it for me. He also burnt a chip for my ecu for the h22.

My oil leval is fine but i was thinking of running a little bit thicker oil, maybe it is getting to hot i don't know i am up for any ideas.

 

Check your timing and knock sensor. Any codes? Your intake air temp sensor could also cause your timing to be backing down.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM H22 &raquo;</TD></TR><TR><TD CLASS="quote">Check your timing and knock sensor. Any codes? Your intake air temp sensor could also cause your timing to be backing down.</TD></TR></TABLE>i wanted to check my timing but i was looking for my timing mark on the crank pulley like a b series but i just found out that it is on the flywheel.

I got code 19 automatic lockout a automatic ecu but i have a different ecu on the way.

I will have to check the air temp sensor i will let you know thanks

 

Mine is doing the exact same thing im doing a tune up and i gotta put a new knock sensor on there i have had a bad knock sensor since i put a new h23(couldnt afford h22) i got the sensor need to swap it in but ive been driving for awhile with a bad sensor and it just started doing it

 

wait until the oil is warm, change your vtec solenoid gasket, H22 at high RPM's needs warm oil, and pressure, if not it won't switch into vtec, if the car is at operating temp, then there is not enough pressure, so change that gasket, it's easy. (i did it in my swap)


goodluck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rival12 &raquo;</TD></TR><TR><TD CLASS="quote">wait until the oil is warm, change your vtec solenoid gasket, H22 at high RPM's needs warm oil, and pressure, if not it won't switch into vtec, if the car is at operating temp, then there is not enough pressure, so change that gasket, it's easy. (i did it in my swap)


goodluck </TD></TR></TABLE>I allways let my car warm up to normal opp. temp. first. It seems to happen after i have been drving it around for a while. I will try a new gasket maybe even a new silenoid thanks for the advce.

 

i got the same problem with my h23 im doing a tune up getting new plugs and wires and a oil change any other suggesitons as to wat it could be

 

timing maybe i am gonig to try that this weekend

 

get oil change, tune up for process of elimination. most of the reasons why it wont hit vtec is because bad oil. But since we know that isnt the problem, then i say get a tuneup. how long after you start the car do you pull vtec. Because its quite normal for a car to shut off vtec until the engine is fully warmed up. i believe the term is ... dont kill me if im wrong, got it off a site TLM temporary limp mode. i dunno i could be wrong
but those are the theories. But i did hear that the car wont hit vtec until it is fully warmed up.

 

i dont have vtec i just dont pull like i should when it warms up