Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

97 dx coupe. code 68 and 8(ecu and dizzy)

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Old Jan 30, 2014 | 12:55 PM
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Default 97 dx coupe. code 68 and 8(ecu and dizzy)

i seem to have this thing with buying cars that have had the ECU's messed with..

anywho, 68 is like a "hey, something is really weird with the computer, do something" and 8 relates to the distributor and/or signal from dizzy to ecu. ssoo, as its running without issue right now aside from a stumble when cold, and poor milage(27 at like 60/40 highway/city)i'm thinking code 8 is related to 68.

after looking around, 68 seems to come from an issue with a chipped ecu, something wrong with the 'chip' itself.

as soon as i get a minute to dive into the car i will. i'm just looking for a heads up, what to look for, anything like that.

i know options at this point are A:fix potential solder issues on chip B:new chip C:new ecu.

thanks
Old Jan 30, 2014 | 01:29 PM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

Post a video of the blinking CEL.
Old Jan 30, 2014 | 02:26 PM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

Originally Posted by RonJ@HT
Post a video of the blinking CEL.
yeah, i know, i did a search, 'there is no code 68'. Except there is, just do a search for it. Code 68 is basically just a "there is a big issue with the ECU". doing a search, anyone who had a 68 either had wrong ECU or had a chip installed. why am i guessing chip? because previous owner installed an exhaust and didn't have post-cat O2 installed. I figured light was for missing sensor. when i did a search for that code and all the aforementioned came up i just concluded it must have a chip in the ecu.

either way, just conjecture, when i get a minute i'll actually look around

Funny thing is, different vehicle had a very similar issue(only it was a code 53, and no listing, forum guru said yeah, only saw once, its wrong ecu/wrong wiring harness, ended up being previous owner soldered in wrong capacitors)
Old Jan 30, 2014 | 02:55 PM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

I'm still waiting to hear why exactly you don't have a stock ECU in that car. Buy one, or even better, borrow one from a friend and see what happens.
Old Jan 30, 2014 | 07:25 PM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

Deleted, doesn't pertain to this issue.

Last edited by TomCat39; Jan 30, 2014 at 07:58 PM. Reason: Helps when I can read.
Old Jan 30, 2014 | 07:31 PM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

Originally Posted by TomCat39
Did you google P0068? It doesn't say anything about ECU.

If I remember correctly, 3 digit or less numbers are universal codes. Honda specific ones are higher up.

P0068 - Throttle Position Sensor Inconsistent with the Mass Air Flow Sensor

http://engine-codes.com/p0068.html

Possible causes
- Faulty Mass Air Flow (MAF) sensor
- Large vacuum leak
- Leaking air duct system
- Mass Air Flow (MAF) poor electrcial connection
- Manifold Absolute Pressure (MAP) poor electrcial connection
- Faulty Manifold Absolute Pressure (MAP) sensor
- TP sensor not seated properly
- Faulty Throttle Position (TP) sensor

P0068 Acura

P0068 Acura - Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation

Same thing... TPS and MAP/MAF are not on the same page.
Do you even understand the basics of Honda diagnostics? 68 is not P0068. It's the OBD-I flash code, 68. You would think that a forum moderator would be expected to know the basics in the FAQ's stickies...

The OBD-I "68" flash code is used by aftermarket chipping/tuning solutions as a "there's something wrong with your ECU" code. Either the ECU itself is damaged, or the code on the chip is corrupted. OP, like I said, buy or borrow the proper ECU for your motor and test it. See what codes you get with the correct, OEM, unmodified ECU.
Old Jan 30, 2014 | 07:55 PM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

NVM- Just saw the part I missed. Was going purely off of 97 DX. Missed the implied swap "OBDI flash code"
Old Jan 30, 2014 | 07:58 PM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

And you can still retrieve OBD-I codes from any 96-05 Civic. Possibly even later models than that, those are just the years that I know for sure. Seriously, this is diagnostics 101 stuff. Not assuming anything is also diagnostics 101.
Old Jan 30, 2014 | 08:02 PM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

Originally Posted by NotARacist
And you can still retrieve OBD-I codes from any 96-05 Civic. Possibly even later models than that, those are just the years that I know for sure. Seriously, this is diagnostics 101 stuff. Not assuming anything is also diagnostics 101.
Didn't know you could pull OBDI from OBDII cars. Thought once there was a universal scanner that's all anyone used. Thanks for the tip.
Old Jan 30, 2014 | 08:08 PM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

We get enough misinformation from the new, young, and ignorant members of Honda Tech. I really do appreciate the efforts you've made to keep these forums clean, but please stick to that and leave the diagnostician stuff to RonJ, deschlong, and the guys that really know what they're doing.
Old Jan 31, 2014 | 08:06 AM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

Originally Posted by NotARacist
I'm still waiting to hear why exactly you don't have a stock ECU in that car. Buy one, or even better, borrow one from a friend and see what happens.
purchased as-is, previous owner didn't have it very long, didn't know much about it. I live in MI, this is that land of GM and thats about it. no one owns foreign cars here(more or less), ssoo if i could just conjure up a computer it would be awesome, but, i haven't yet figure that one out yet in life(conjuring electronics, maybe one day.) lol.

um, yeah, i know, i should just order an ecu and not even worry about opening the one i have up and see if is mendable.

have some time today and its nice-ish outside, going to do some diagnosing.
Old Jan 31, 2014 | 09:36 AM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

Take the top of the ECU off and post a picture. Also, post the ECU code. It'll be on a sticker on the side of the case.
Old Nov 10, 2014 | 09:18 AM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

solved.

i never finished this, and i was just looking back over it because i was trying to remember what happened.

new ecu, code gone. new distributor solved issue. i do not remember what it is, but there is a removable part that the FSM says is not removable, but, no one builds a replacement part for it, so only option is buying new distributor. thats the solution for code 8.

however the replacement distributor just failed, no spark. but i'm creating a new thread.
Old Nov 10, 2014 | 09:53 AM
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Default Re: 97 dx coupe. code 68 and 8(ecu and dizzy)

Locked...because new thread created.
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