I have a 88 SI with a ZC swap. When i am driving at like 65-70ish it starts to hickup on the freeway, unless i punch it then it pulls just fine. I have replaced the fallowing things to try to fix it with no luck, help me please!!!!
fuel pump(walbro255)
fuel filter(twice)
cap
rotor
plugs and wires
coil
ecu
main relay
cleaned the IACV(took it out and sprayed it with carb cleaner till it looked like new)
cleaned all electrical connections i could find to get rid of corrosion, mainly on the battery
checked for vacum leaks, and had it timed

i think that is all i have done! help me!

thanks in advance!


Modified by REVS-2-9K at 7:37 AM 8/17/2004

 

what kinda ecu. mine did the same with a stock pm6 with my ls swap.

 

i changed from a stock pm6 to a pm7, no effect but it made it rev higher and a bit faster

 

o2 sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx_88_si &raquo;</TD></TR><TR><TD CLASS="quote">o2 sensor.</TD></TR></TABLE>

yep

 

ok ill buy one of those then! would that make it loose ignition? thats what it feels like it is doing...what does the O2 sensor control.....i will replace it regardless!

how do i check the ignitor, i have to edit posts to say more since i am new!

napa has them for 40 bucks for an oem type, or 22 bucks for a uiversal type...what should i get?


Modified by REVS-2-9K at 8:31 AM 8/17/2004

 

i would check the ignitor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by REVS-2-9K &raquo;</TD></TR><TR><TD CLASS="quote">ok ill buy one of those then! would that make it loose ignition? thats what it feels like it is doing...what does the O2 sensor control.....i will replace it regardless!

how do i check the ignitor, i have to edit posts to say more since i am new! </TD></TR></TABLE>

the o2 sensor sends air/fuel mixture info to the ecu and the ecu adjust the fuel accordingly. this is only during cruising/part throttle which is where your symptom is. They are cheap $25 or so, and easy to install.

and the o2 doesnt always throw a code when it's not working right. it will throw a code if there is NO signal. you might have a old/lazy o2 sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx_88_si &raquo;</TD></TR><TR><TD CLASS="quote">o2 sensor.</TD></TR></TABLE>
I was thinking the same thing.

 

new o2 sensor didint do anything, i guess it made my idel a bit smoother but that is about all....ignitor next? should i just buy an entire new distrbuter for like 220bucks?

 

220 is a bit high for a dizzy asembly .. if i remeber correctly i paid about 160 or 180 for mine from autozone after core. im not sure what dizzy the zc has. I would try to get a used ignitor from friend or pick and pull to see if helps clear the problem up.

also have you checked your timing? kinda far possiblity but it could be off a tooth.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by REVS-2-9K &raquo;</TD></TR><TR><TD CLASS="quote">i changed from a stock pm6 to a pm7, no effect but it made it rev higher and a bit faster</TD></TR></TABLE>

me too

my turbo D16Z6 hickups from 2k-4k on partial trotle with the PM6 ecu's

i have the PG7 from integra and runs perfect

 

what is the disributer code i need for a dohc ZC motor, i am finding alot on ebay some for 220 some for 180......any help? or a link to an auction with the right one?
yes i could but i am tierd of buying parts after parts when an ignitor is half as much as an entire new disrbuter i might as well get the whole deal


Modified by REVS-2-9K at 7:14 AM 8/18/2004

 

can't you buy an igniter?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by REVS-2-9K &raquo;</TD></TR><TR><TD CLASS="quote">what is the disributer code i need for a dohc ZC motor, i am finding alot on ebay some for 220 some for 180......any help? or a link to an auction with the right one?
yes i could but i am tierd of buying parts after parts when an ignitor is half as much as an entire new disrbuter i might as well get the whole deal


Modified by REVS-2-9K at 7:14 AM 8/18/2004</TD></TR></TABLE>

if you live by a junkyard go cram 5-10 ignitors in your pocket. i dont know if its the ignitor or not. a new distributor from honda doesnt come with much...and im not sure about the ones from autozone. youd probably have to put the guts of your distributor into the new one.

what fuel pressure are you running with that walbro pump?

 

The disribut come totally complete! 3 year warranty. but I am not sure about the fuel pressure, i just hooked that bitch up! it diidnt change any aspects of the car runniing at all......gas milage or nothing got effected by the new pump...