chronodyne28

I still don't understand ecu's. Is it supposed to tell you what's wrong with your car?

JDMlyfestyle

yes these codes will apply to your car. the codes are for all OBD I and OBD II honda's. and you will tell the codes apart cause there will be a 1-2 second pause then they start flashing again.

Yes a ECU will tell u everything that is going on in your motor and it will tell u what is wrong with it as well

Chiovnidca

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chronodyne28 &raquo;</TD></TR><TR><TD CLASS="quote">I still don't understand ecu's. Is it supposed to tell you what's wrong with your car?</TD></TR></TABLE>
Most of the time it can only point you towards the circuit that has the problem. It takes a little diagnostic work to track down the exact problem.

JDMlyfestyle

if you have common knowledge of ecu problems then you can find the problem easy

Oggy_EG4

What will hapend if I hook wrong pins?
Can I burn ECU by that?
Sory for lousy english

emsAARON

I am here to announce...thanks to JDMlifestyle and this forum I replaced the VSS in my 94 Accord...myself (Dad's help)...for $51 parts delivered.

Now my Speedo, Odometer, Cruise Control ALL WORK GREAT! and no more annoying flashing lights.

Thanks sooooo much!

Aaron

JDMlyfestyle

hookin up the wrong wires to a ecu is a easy way to Fry That SOB

5lugSlug

very helpful - always wanted a book or something about this, but now i got it for free

chronodyne28

quick question: I just installed stainless steel 4-2-1 DC headers and now when the car is warmed up and idling it raises it's idle from 1000 to 1500 over and over again. Reseting the ecu can cure this?

JDMlyfestyle

sounds like ur IACV. i always reset the ecu when i do any mods to my car

KillBot

History:

97' del sol w/p28
Cel Code #41

I replaced the sensor, reset the ecu and 5 seconds after start-up it returned. I've driven it and reset it a few times now with the same results. I have checked all my fuses, and I am now stumped. Voltage coming to the heater is 4 volts. From what I have read it should be 12 volts. Where do the o2 heater wires go? A6 on the ECU? Could my pgm-fi main relay be bad? Any ideas? My inspection runs out tomorrow and I have to be back on post tomorrow as well (10 hours away).

JDMlyfestyle

now is this a 4 wire 02? you could have possibly mixed up 2 wires or something very common mistake.

KillBot

Yes, its a four wire, but the harness was a four wire as well. Plug and play replacement.
Someone told me that o2 brand might play into the code...any truth in that?

JDMlyfestyle

ya it might. cause it needs time to heat up and break in. run the car for a day or 2. then reset the ecu and see what it does

KillBot

Werd

KillBot

Well, that did it. Ran the car for 30 miles or so, reset the computer and it went away. Thanks for the info.

jiggamurf

hey to anyone i have this 91 acura integra that i just bought and it wont pass emissions cux to much nox now it has a 99-00 si engine in it its the 6th generation jdm with its ecu and its been throwing a code i believe its code 41 which is the heated o2 sensor. so i look at the engine compartment and the second o2 sensor harness is hanging. turns out to be that the car only has one o2 sensor hooked up its missing the second o2 sensor is that a problem for emissions. can any one help?

Wilky

Is it possible that a larger diameter exhaust system (w/ punched out cat, element was rattling) might give me an O2 sensor code. I have replace the first O2 sensor (on the header, LSR w/ 2.5" collector and LSR cat w/ apexi WS2) on my 99 Si trying to get this code to go away. Long story -- but everytime I reset my ecu it gives me a different code. Now it is somewhere in the 2000s and I always lose count.
A friend told that Autozone could check my ecu, so I went there and it gave me a "high voltage in 02 sensor 1." I am sure I put the new one in correctly, so what else could possibly be the problem. The tech guys said to replace my plugs and wires (they say that anyway, no matter what the problem). I replaced the plugs and wires are on the way. I hate lookin at that cel day in and day out. Any input??? Help.

Kutsuju_SLeePER

Kick *** Thread...
Just saving to my List of References

domestickilla

Hi everyone i'm very new to the import world and i'm already having sum bumps the other day i let the rev's get to low in high gear and didn't put the clutch in untill i was very low in the rev's and my car started to rev by itself and now my speedo is a complete failure and now my check engine light is on would that have made my VSS go bad or possibly my distirubter anyone have the same problem on there 94 Civic EX thanks for the help....James

JDMlyfestyle

How low were the RPM's getting. and it sounds like your VSS took a **** on you.

domestickilla

yeah i'm guessing it was probably around a grand but that's just guessing i know it was pretty low if it had to rev it self back up really stupid on my part yeah i just checked the codes it gave me 17 and 41 i know it's VSS but i don't know where the primary O2 Heater Sensor is on my car oh yeah anyone got a spare VSS for a 94 EX laying around....hehe i don't know if it only comes out of a 92-95 EX or other motors thanks for the help

Wilky

Any help at all? Read my previous.

ch4nq

sorry i dont have no expert that can help me in town and im kinda new wanting to learn and all. but yeah, i was wondering how the heck do you read the codes? and where? i see people put code this and code that is showing up, but where? please educate me once and for all!! thanks H-T EXPERTS!

jiggamurf

what is the vss what do you mean by it took a **** on me?

the rpms were getting as low as 800 or so i believe this is normal i dont really know