95 lx chk eng light need help

On Apr 3, 10:25 pm, lance4132 <n... RemoveThis @000.com> wrote:
> I am getting a chk eng light with a trouble code 12 and I replaced the
> egr valve and the pcv valve along with new gas cap
> I am still getting the light and same trouble code after resetting the
> ecu
>
> Any advice?
>
> 1995 Honda Accord
>
> Thanx
>
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I'm working on the same problem with my '94 Accord.I traced it down to
the EGR control solenoid valve.The solenoid will work when jumped
electrically,but not supplying vaccum to the EGR valve.The ports are
very small and i don't suspect it would take much to plug them.I'll
let you know how i make out with mine.I may take the solenoid apart
first to check for restrictions (gotta bend back the factory crimps)
if not,i'll just swap it out with another.

BTW,You can download several service manuals from http://www.hondahookup.com/manuals/
 >> Stay informed about: 95 lx chk eng light need help 

Zippo wrote:



> I was talking about the control valve solenoid,(that supplies vaccum
> to the egr) not the EGR valve.

One more thing to check for:

The ECU will also throw the EGR code if the EGR valve doesn't respond
fast enough, even though the system may otherwise be fine. After
testing just about every possible aspect of the circuit, I wound up
drilling out the solenoid metering orifices (located in the hose
attachment risers) a few thousandths. Problem fixed!

-Greg
 >> Stay informed about: 95 lx chk eng light need help 

I have a '92 Accord, and had a similar experience with the check
engine light a few years ago during a vacation. Not knowing the cause,
I took my car to an out-of-town garage who were honest in stating that
a code 12 had been tripped, but very dishonest in suggesting that the
problem was (get this....) the ECU unit! Now that's a very expensive
part. I said "thanks...I'll think about it", and went to yet another
gararge down the street. Just to second the other response you got
here re: the egr valve, in my case it was the egr solenoid which
needed replacement...that was it. Real simple, and real cheap. This is
not the valve itself mind you (which periodically needs to be cleaned
due to carbon build-up), but a small round plastic part (green and
white) located in the egr control box near the firewall. - Paul.

On Tue, 03 Apr 2007 22:07:33 -0700, jim beam
<spamvortex RemoveThis @bad.example.net> wrote:

>lance4132 wrote:
>> I am getting a chk eng light with a trouble code 12 and I replaced the
>> egr valve and the pcv valve along with new gas cap
>> I am still getting the light and same trouble code after resetting the
>> ecu
>>
>> Any advice?
>>
>> 1995 Honda Accord
>>
>> Thanx
>>
>
>check the control equipment - there's a couple of solenoids and some
>vacuum tube that lifts the plunger in the egr valve. if that's
>disconnected or broken, you'll get the code. also, check the electrical
>connections between the egr valve/controls and ecu.
>
>if it's not that, you'll have to investigate the ports for blockages.
>i'm not sure if your series motor has the necessary sensors, but on
>later vehicles, the ecu figures out when the egr system is not flowing
>properly. if that's the case, you'll need to check out the port
>cleaning procedure in this group archive, or i think on tegger.com.
 >> Stay informed about: 95 lx chk eng light need help 

Paul S wrote:
> I have a '92 Accord, and had a similar experience with the check
> engine light a few years ago during a vacation. Not knowing the cause,
> I took my car to an out-of-town garage who were honest in stating that
> a code 12 had been tripped, but very dishonest in suggesting that the
> problem was (get this....) the ECU unit! Now that's a very expensive
> part. I said "thanks...I'll think about it", and went to yet another
> gararge down the street. Just to second the other response you got
> here re: the egr valve, in my case it was the egr solenoid which
> needed replacement...that was it. Real simple, and real cheap. This is
> not the valve itself mind you (which periodically needs to be cleaned
> due to carbon build-up), but a small round plastic part (green and
> white) located in the egr control box near the firewall. - Paul.
>

-------------------------------

Every Honda owner needs to read this part of Tegger's FAQ:

http://www.tegger.com/hondafaq/faq_ii.html#changeecu

'Curly'
 >> Stay informed about: 95 lx chk eng light need help 

lance4132 wrote:
> I am getting a chk eng light with a trouble code 12 and I replaced the
> egr valve and the pcv valve along with new gas cap
> I am still getting the light and same trouble code after resetting the
> ecu
>
> Any advice?
>
> 1995 Honda Accord
>
> Thanx
>
>
>

We changed from the stock fuel cap over to a locking one, because of
thefts of gas in our neighborhood, that is a very safe one, but, the gas
prices can drive the animals to stupid acts. We have video surveillance
cams all over our home...

Anyway, the warning lights came on that the O2 or EGR was bad.

Seems that the Oxygen sense system also measures vacuum or pressure in
the fuel vapor re-circulatory system. Just changing the fuel cap (and,
it might be vented instad of sealed/non-vented) caused warning
indications.

I now really believe in checking the cap, the vacuum lines, before I
start into the expensive parts!
 >> Stay informed about: 95 lx chk eng light need help 

On Apr 6, 2:26 am, Greg Campbell <ggeone....DeleteThis@ccoxx.nnett> wrote:
> Zippo wrote:
> > I was talking about the control valve solenoid,(that supplies vaccum
> > to the egr) not the EGR valve.
>
> One more thing to check for:
>
> The ECU will also throw the EGR code if the EGR valve doesn't respond
> fast enough, even though the system may otherwise be fine. After
> testing just about every possible aspect of the circuit, I wound up
> drilling out the solenoid metering orifices (located in the hose
> attachment risers) a few thousandths. Problem fixed!
>
> -Greg

Had the identical problem with mine.Drilled out the bottom orifice on
the solenoid (plugged solid) and is now working perfect.
 >> Stay informed about: 95 lx chk eng light need help