whats up guys, my car will misfire after being pushed hard. I have replaced the cap and rotor of the distributor and fuel filter. The fuel pressure is 35psi when i first start the car. it is a 1997 dx civic with a 19t greddy kit boosting only 7psion a 12:! fmu and missing link, any ideas? The car will only misfire like the second or third time after turning it off from when it was pushed to redline through 3 gears


Modified by Civiclx at 1:29 PM 8/31/2004

 

What plugs you running and at what gap?

 

bcpr7es at a .030 gap (NGK)

 

also, it only started misfiring after one of the injector wires came loose (the red wire - second injector wire) and possibly could have grounded out somewhere) do you think it coule be a faulty wiring harness or possibly a messed up ecu?

 

cmon anyone? should i replace the ecu and the wiring harness?

 

help

 

absolutely anyone

 

I had a similar thing happen. I had lost one of the retaining clips for an injector pigtail and it kept rattling loose at high RPMs.

 

hrmmmm did it come lose at high rpms, or after the car was turned off after running high rpms

 

seriously sounds like plugs...try new ones and a step colder along with bringing the gap gap down a bit also (.024-.026)

 

some are saying step colder some are saying step hotter, im running the colder than stock plugs (bcpr7es) right now, any other hints?

 

ok this is getting ridiculous, on my way to school i didnt take it past 4k rpm, just kept it at 3k going 70 and it started to misfire at about the 20th mile at 3k, it misfired for about 1 minute going uphill then stopped. Everytime i have autozone check the code it is a misfire on cylinder 2 (the cylinder that had the messed up soldering) do you think teh soldering coming loose could have messed up my ecu?

 

top please

 

oh btw i kept it out of boost also

 

if you have had problems with that particular cylinder's wiring, I'm wondering if it was repaired properly...it seems a bit of a coincedence.

 

checked the wiring, but ill recheck again to be sure, the wiring is pretty tight on there (stretch to get the connector to the injector)

 

not giving up

 

cmon

 

IMO
the msising link isnt working and ur ecu is seeing some boost
causing it to jump on limp mode

i have boosted more than 11 psi sometimes and the VAFC hack doesnt take enough away and have cause me to limp without a CEL... and with turning engine on off a few times takes care of it

 

hrmm well the missing link was fine and it has only missed since i found the messed up wire on cyl 2, any way the ecu is bad?

 

grrr it misfired for about 5 minutes on the highway, stopped for 5 minutes, then did it again

 

I would try and replace the injector plug and extend the wires so they are not so tight ..... you might have a wire broken inside the insulation that you can not see .

 

im buying a whole new harness for 30 bucks, lets see if thats the culprit, i checked the codes at autozone and it was a misfire on 2 and 4

 

yea man i am having the same problem...my car will run fine,but if i push it,it starts to misfire,but if i turn the car off then back on right away,it works fine again, weird ****..im tryin to figure this **** out too,if i do ill let you know,please let me know if you figure it out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Civiclx &raquo;</TD></TR><TR><TD CLASS="quote">checked the wiring, but ill recheck again to be sure, the wiring is pretty tight on there (stretch to get the connector to the injector)</TD></TR></TABLE>

There should always be some slack in any piece of wire - hopefully the new harnes solves your problems.