ok so some friends an i put a z6 swap from a friends car into my si, but we have a little problem, the motor wont rev over 2k, it idles fine
i have
-changed spark plugs
-changed fuel injectors
-checked timing just to make sure
-changed distributors
tried all these things and with no luck, and i ruled out fuel pump because its still giving the motor fuel so it cant be that.... anybody got any ideas, its throwin 4 codes, but 2 of em are o2 and vtec, witch are not hooked up and the other two are iat witch i changed so it shouldnt even be there and coolant sensor witch is not hooked up cause on the wiring harness i had it didnt have it for some odd *** reason...and the motor i guess ran fine befor i got it, any ideas guys?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eddiecut &raquo;</TD></TR><TR><TD CLASS="quote">the motor i guess ran fine before i got it, any ideas guys?</TD></TR></TABLE>

shitty operator

 

I would say not having the o2 and iat sensors hooked-up could be the issue! Also, the fact that your harness 'supposedly' doesn't have them, makes me think something is screwy there...

 

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

shitty operator </TD></TR></TABLE>

i concur

 

iat is hooked up... just no o2, should be fine with out a o2 tho...

 

My car runs pretty crappy with the O2 unplugged. I would say fix those sensor problems, especially the O2 and coolant temp, and see if that helps your situation.

 

see i know it wouild run a little rough, but it wont rev over 2 grand!!!! like its hittin the rev limit, and those sensors would have nothing to do with that

 

A friend of mine had the exact same problem, I'm going to gurantee that your IACV and PCV valve are swited around. They are the same plug and all and you get a pulsating 12+ volt going to PCV which will probably cause this. Try switching them around and see what happenes. One other thing I would check your wiring colors and see what plugs are going where

 

the plugs should be fine but i never thought about that iac and pvc ill go try that in a bit.... its the weirdest damn problem i hate it!!!!!

 

just drive the camo hatch off a cliff

 

try disconnecting the IAC and PCV and see how it reacts. What codes are you throwing besides the ones that you listed?

 

those are the only four that iam throwing...

 

Plugged cat?????

 

maybe its me, but there isnt a plug on the PCV valve. Has anyone caught that?

 

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

straight header....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by QuikJaysun &raquo;</TD></TR><TR><TD CLASS="quote">just drive the camo hatch off a cliff </TD></TR></TABLE>

No help....stick to the topic at hand.....ban

 

you still having issues??? or did you fix it already

 

Sounds like the ECU is in Limp Mode,my car did that when it had a bad ECU.

 

could be the ECU. What ECU did you say your running??

 

well i took my ecu out and put it in a friends teg to see if it would run it fine and it ran fine revved up and everything. so at this point i wanna blow it up... its gettin really frusterating...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eddiecut &raquo;</TD></TR><TR><TD CLASS="quote">well i took my ecu out and put it in a friends teg to see if it would run it fine and it ran fine revved up and everything. so at this point i wanna blow it up... its gettin really frusterating...</TD></TR></TABLE>

Sounds as if you got the Tps and the Map sensor plugs switched around




Modified by K20EG at 10:26 PM 4/11/2004

 

nope, i have played with em the whole time tryin to see if thats it, and its not, it will only run and idle right with em this way...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eddiecut &raquo;</TD></TR><TR><TD CLASS="quote">nope, i have played with em the whole time tryin to see if thats it, and its not, it will only run and idle right with em this way...</TD></TR></TABLE>


Backstep.....get those codes cleared out ..vtec...coolant ...iat...and o2 if you can.

Make sure each sensor plug is in the correct location ! ..including the injectors

I sounds like somethins mixed up or even a ground issue.

Justin married this peach

 

ya, i have tried most of this ****, i even tried different injectors, the harness is hooked up right and everything is how it should be, but there is something thats not workin for some reason...i think i might try another harness...

 

one question y the hell didnt u just stick with the b16....