Go Back   Honda-Tech > Honda and Acura Model-Specific Technical Forums > Honda Civic/Del Sol (1992 - 2000)
Sign in using an external account
Register Forgot Password?
Search


Welcome to Honda-Tech!
Welcome to Honda-Tech.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Honda-Tech community today!


Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread
Old 10-27-2010, 06:43 AM   #1
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default 97 civic ex stumbles bad on acceleration

Sup guys. Gota 97 civic ex. it slung a rod at 197xxx. bought a y7 motor with 80xxx on it. put my head on the y7 block. since installation, it has a rough idle and has progressivley gotten a bad stumble when you accelerate. When the car is cold it does not do this. When it warms up, it stumbles like a "studder box" when under heavy load. If you keep the rpms up, it does not stumble. i have changed the normal stuff, plugs, wires, cap, button, filters. It has gotten to the point now that u have to drive it like you stole it! im getting spiratic codes thrown at different times. i get multiple misfires, knock sensor, 02 sensor heater circuit malfunction, p1298. sometimes it will throw just a couple codes, then sometimes it will throw 7 or 8 codes. need assistance! i dont have much hair left!!
bigfinderman is offline   Reply With Quote
Old 10-27-2010, 06:56 AM   #2
Raising the bar
2000 Honda Civic
My Garage
 
RonJ@HT's Avatar
 
Join Date: Feb 2008
Location: Houston, Texas
Posts: 34,550
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Which code(s) is consistently thrown?

What brand plugs, wires, cap, and rotor did you install? Are the plugs gapped properly? Have you compression tested the cylinders?

The Y7 block lacks a knock sensor. Did you install the one from the old Y8 block?

Also check whether 7.5A dash fuse 15 is blown.
__________________
Don't guess, troubleshoot.
Useful tech links -- FAQs; Codes; Check Spark; Test Fuses; Fuse 15 TSB; Clean IACV or FITV

Last edited by RonJ@HT; 10-28-2010 at 10:34 AM.
RonJ@HT is offline   Reply With Quote
Old 10-27-2010, 07:53 AM   #3
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Codes p1298, p0325 (knock sensor), and multiple cylinder misfires are consistent. used ngk replacement plugs gapped properly. cant remember the brand on the wires and cap. i havnt done a compression yet. going to today if i have time. i had no idea about the knock sensor. does the y7 have the spot for it? fuse 15 is good.
bigfinderman is offline   Reply With Quote
Old 10-27-2010, 07:55 AM   #4
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

also, i messed around with it a little yesterday. while running, i unplugged the wires from the cap one by one to make sure they were all hitting. cylinder 3 wire made no change to engine performance when disconnected. it was sparking, but no engine change.
bigfinderman is offline   Reply With Quote
Old 10-27-2010, 09:09 AM   #5
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

additional info. i just read in the faq how to get the cel codes using the ecu jumper. prior to now, i have used a buddys scantool. i checked the codes as stated in the faq. i recet the ecu and went for a drive and checked them again. i am only getting 2 codes now. code 20 (electrical load detector), and 23 (knock sensor). thanks again for any info
bigfinderman is offline   Reply With Quote
Old 10-28-2010, 04:12 AM   #6
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Any ideas fellers??
bigfinderman is offline   Reply With Quote
Old 10-28-2010, 05:34 AM   #7
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: Mississauga, Canada
Posts: 17
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

I've got a 95 si vtec with JRSC and stage1. ... stumbled like a "studder box" in 2 occasions that I hit it hard from low rev.. once on a wet road. changed my sparkies to NGK Iridium, now my start-ups are relatively smoother with less chatter. This is probably a different problem than yours, but not unless my engine was sputtering during low rev, my mech said could also be caused by worn out clutch (hasn't been changed for the last 11 years). So I'm changing clutch to stage 4.. see if it works.
spedo is offline   Reply With Quote
Old 10-28-2010, 10:34 AM   #8
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

i just checked the electrical load detector as described in my repair manual. with the engine idleing, i have 4.5 volts. when i turn the low beams on, i have 4.54. according to the manual, the voltage is suposed to drop when the low beams are turned on. they increased. they state that if the volts do not decrease then you need to replace the eld. what do you guys think?
bigfinderman is offline   Reply With Quote
Old 10-28-2010, 11:55 AM   #9
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Any thoughts guys?? Any help would be much appreciated.
bigfinderman is offline   Reply With Quote
Old 10-28-2010, 01:39 PM   #10
Raising the bar
2000 Honda Civic
My Garage
 
RonJ@HT's Avatar
 
Join Date: Feb 2008
Location: Houston, Texas
Posts: 34,550
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

What are the current symptoms?

Check installed 7.5A dash fuse 15 with a test light as described at the fuses link in my signature. Is there voltage at both top test tabs with the key in ON(II)?

You'll need to install a knock sensor to get rid of the knock sensor code.

Click the image to open in full size.
__________________
Don't guess, troubleshoot.
Useful tech links -- FAQs; Codes; Check Spark; Test Fuses; Fuse 15 TSB; Clean IACV or FITV
RonJ@HT is offline   Reply With Quote
Old 11-01-2010, 04:03 AM   #11
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Current symptoms: runs ok when cold. at running temp, stumbles very bad when under a load. almost like a studder box. if you drive it like an indy car, it runs good. idles rough. havnt done a compression test yet. going to today. when you take number 3 plug wire off while running, it makes no change to performance. you can also unplug number 3 injector and makes no siginicant change to engine. also, for the past 2 days, when i first get in the car, my headlights and dash lights flicker for a little while, but eventually stop. im clueless guys
bigfinderman is offline   Reply With Quote
Old 11-01-2010, 12:19 PM   #12
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Anymore ideas or tips guys?? I really dont want to take the civi to the dealership. Thanks
bigfinderman is offline   Reply With Quote
Old 11-01-2010, 12:22 PM   #13
Raising the bar
2000 Honda Civic
My Garage
 
RonJ@HT's Avatar
 
Join Date: Feb 2008
Location: Houston, Texas
Posts: 34,550
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Does the number 3 plug have bright white spark? Does the number 3 injector pulse gas? Does cylinder 3 have low compression?
__________________
Don't guess, troubleshoot.
Useful tech links -- FAQs; Codes; Check Spark; Test Fuses; Fuse 15 TSB; Clean IACV or FITV
RonJ@HT is offline   Reply With Quote
Old 11-01-2010, 12:29 PM   #14
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Number 3 seems to be sparking fine. I havnt taken the injector out, just unplugged the electrical to it. I am going to do a compression test here in a few when i get off work. I just dont know if it an electrical problem or fuel problem. got me super puzzled.
bigfinderman is offline   Reply With Quote
Old 11-01-2010, 01:05 PM   #15
Raising the bar
2000 Honda Civic
My Garage
 
RonJ@HT's Avatar
 
Join Date: Feb 2008
Location: Houston, Texas
Posts: 34,550
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Remove the fuel rail along with the injectors and then crank the engine to see whether all spray/pulse fuel.
__________________
Don't guess, troubleshoot.
Useful tech links -- FAQs; Codes; Check Spark; Test Fuses; Fuse 15 TSB; Clean IACV or FITV
RonJ@HT is offline   Reply With Quote
Old 11-02-2010, 04:17 PM   #16
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Update. fuel injecters were good. finally did a compression test. shouldve done this first. (side note: when i said cylinder 3 wasnt hitting, i meant cylinder 2). test results: cyl 1- 100psi/ cyl 2- 30psi and was leaking down/ cyl 3- 100psi/ cyl 4-100psi. with that said, why would the other 3 cylinders not have the adequate 130 psi?? car ran like a top prior to rod slingage. i know i should have my a** kicked for not getting the 200,000 mile head reworked before i put it on a 80,000 mile block. i have a couple ideas now as of what the problem is. what do you guys think?? tight valves? bad piston ring? clapped out head all together? thanks in advance
bigfinderman is offline   Reply With Quote
Old 11-03-2010, 03:59 AM   #17
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Thoughts?
bigfinderman is offline   Reply With Quote
Old 11-03-2010, 11:11 AM   #18
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Talk to me big RonJ! What do ya think? Thanks
bigfinderman is offline   Reply With Quote
Old 11-04-2010, 08:42 AM   #19
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

another update. pardon my stupidity. when i did the compression test i went plug by plug and didnt take them all out to perform the test. after reading i my manual, i read that i needed to take them all out. so i just did it again the right way. results: cyl 1- 140, cyl 2- 130, cyl 3- 155, cyl 4- 160. compression was holding. so seems to be ok. so now im back to the drawing board. any more thoughts or suggestions would be greatly appreciated. thanks
bigfinderman is offline   Reply With Quote
Old 11-04-2010, 08:49 AM   #20
Raising the bar
2000 Honda Civic
My Garage
 
RonJ@HT's Avatar
 
Join Date: Feb 2008
Location: Houston, Texas
Posts: 34,550
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Ideally, there shouldn't be more than a 10% difference between cylinder compressions.
__________________
Don't guess, troubleshoot.
Useful tech links -- FAQs; Codes; Check Spark; Test Fuses; Fuse 15 TSB; Clean IACV or FITV
RonJ@HT is offline   Reply With Quote
Old 11-04-2010, 08:52 AM   #21
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Ok. Any suggestions for possible causes?? Thanks
bigfinderman is offline   Reply With Quote
Old 11-04-2010, 10:57 AM   #22
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Would my knock sensor or ELD CEL codes have anything to do with my problems?
bigfinderman is offline   Reply With Quote
Old 11-05-2010, 06:07 AM   #23
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Checked my ignition timing. Its was sitting at roughly 24* BTDC. Loosened up the dizzy and brought it back to spec. It ran worse. Any ideas??
bigfinderman is offline   Reply With Quote
Old 11-05-2010, 08:32 AM   #24
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2010
Location: ROLL TIDE
Posts: 47
iTrader Rating: (0)
Default Re: 97 civic ex stumbles bad on acceleration

Is everyone stumped like me??
bigfinderman is offline   Reply With Quote
 
 
 
submit to reddit
Reply

Tags
2000, 97, acceleration, acura, bad, civic, cold, honda, iacv, integra, knock, load, make, p0325, rough, runs, sensor, stumble, stumbles

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 02:19 AM.



2014 Copyright, InternetBrands Inc.
Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.
Emails & Contact Details