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Joined: Oct 23, 2005
Posts: 2
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(Msg. 1) Posted: Sun Oct 23, 2005 5:11 pm
Post subject: EGR Problem,1991 Acura Integra
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Hi
Ok im having a big problem with my integra LS.I was driveing one day and noticed the check engine light came on,i took it to the local honda dealership and they told me it was a CODE 12: EGR,they said they would have to replace the EGR valve to the tune of $473.00,once that was done i noticed the check engine light came on again...i took it back to the honda dealership and they ran another test...and once again code 12 EGR came up,they said this time that it was the EGR solenoid an that it needed to be replaced,they did it for free and gave me my car back.
As soon as i left i noticed the check engine light again,took it back....and what do you know,code 12 EGR came up on the scan.They then spent the next 3 or so days,re routing the air intake hoses and pretty much tightning nuts and bolts,not doing much of anything,got my car back and once again check engine light came on saying code 12 EGR.At this point the honda dealership head mechanic told me they dont know what the problem is and there is pretyt much nothing they can do.
That is the back story,here is my problems.
-The car has a very rough idle when it is in Drive and my foot is on the brake as soon as i put the car into netural or park the rough idle stops and it idles normally.
-Code 12:EGR is still not fixed,and the check engine light comes on almost everytime i drive the car...ive gotten it tested 4 times,everytime it is the Code 12:EGR problem.
Any help you guys could give me would be greatly appricated. |
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Since: Apr 20, 2005
Posts: 888
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(Msg. 2) Posted: Sun Oct 23, 2005 7:55 pm
Post subject: Re: EGR Problem,1991 Acura Integra [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Kody wrote in
> Hi
>
> Ok im having a big problem with my integra LS.I was driveing one day
> and noticed the check engine light came on,i took it to the local
> honda dealership
Big mistake. Don't bring a car this old to the dealer for this kind of
service. This is well oustide their normal line of work, it's nothing they
ever see on a regular basis, and the mechanics are not trained for it.
> and they told me it was a CODE 12: EGR,they said they
> would have to replace the EGR valve to the tune of $473.00,once that
> was done i noticed the check engine light came on again
Did they replace the EGR Valve Lift Sensor along with the EGR valve, or was
it part of the valve itself?
--
TeGGeR®
The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/ |
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Since: Apr 20, 2005
Posts: 888
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(Msg. 3) Posted: Sun Oct 23, 2005 7:55 pm
Post subject: Re: EGR Problem,1991 Acura Integra [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"TeGGeR®" wrote in
>
> Did they replace the EGR Valve Lift Sensor along with the EGR valve,
> or was it part of the valve itself?
>
>
Also, did they check for
1) vacuum line damage or splits, and
2) voltage in the wires to the valve lift sensor and the control solenoid
valve?
The only way the ECU knows anything at all about the ECU is the electrical
signals it gets from those two parts. The ECU has no idea how much exhaust
gas is rerouted to the intake except for what it reads from the Valve Lift
Sensor. It controls valve lift by controlling voltage to the Control
Solenoid.
--
TeGGeR®
The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/ >> Stay informed about: EGR Problem,1991 Acura Integra |
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External
Since: Apr 20, 2005
Posts: 888
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(Msg. 4) Posted: Sun Oct 23, 2005 9:55 pm
Post subject: Re: EGR Problem,1991 Acura Integra [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"TeGGeR®" wrote in
> "TeGGeR®" wrote in
>
>
>
>>
>> Did they replace the EGR Valve Lift Sensor along with the EGR valve,
>> or was it part of the valve itself?
>>
>>
>
>
> Also, did they check for
> 1) vacuum line damage or splits, and
> 2) voltage in the wires to the valve lift sensor and the control
> solenoid valve?
>
> The only way the ECU knows anything at all about the ECU
Typo. Should read:
"The only way the ECU knows anything at all about the *EGR*..."
--
TeGGeR®
The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/ >> Stay informed about: EGR Problem,1991 Acura Integra |
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External
Since: Nov 20, 2004
Posts: 31
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(Msg. 5) Posted: Mon Oct 24, 2005 12:18 am
Post subject: Re: EGR Problem,1991 Acura Integra [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Unbelievable!! Call Honda USA and ask for the Area Rep and tell them your
story.
MZ
"Kody" wrote in message
> Hi
>
> Ok im having a big problem with my integra LS.I was driveing one day
> and noticed the check engine light came on,i took it to the local
> honda dealership and they told me it was a CODE 12: EGR,they said they
> would have to replace the EGR valve to the tune of $473.00,once that
> was done i noticed the check engine light came on again...i took it
> back to the honda dealership and they ran another test...and once
> again code 12 EGR came up,they said this time that it was the EGR
> solenoid an that it needed to be replaced,they did it for free and
> gave me my car back.
>
> As soon as i left i noticed the check engine light again,took it
> back....and what do you know,code 12 EGR came up on the scan.They then
> spent the next 3 or so days,re routing the air intake hoses and pretty
> much tightning nuts and bolts,not doing much of anything,got my car
> back and once again check engine light came on saying code 12 EGR.At
> this point the honda dealership head mechanic told me they dont know
> what the problem is and there is pretyt much nothing they can do.
>
>
> That is the back story,here is my problems.
>
> -The car has a very rough idle when it is in Drive and my foot is on
> the brake as soon as i put the car into netural or park the rough
> idle stops and it idles normally.
>
>
> -Code 12:EGR is still not fixed,and the check engine light comes on
> almost everytime i drive the car...ive gotten it tested 4
> times,everytime it is the Code 12:EGR problem.
>
>
> Any help you guys could give me would be greatly appricated.
>
> --
> Posted using the http://www.autoforumz.com interface, at author's request
> Articles individually checked for conformance to usenet standards
> Topic URL:
> http://www.autoforumz.com/EGR-Problem-1991-Integra-ftopict143467.html
> Visit Topic URL to contact author (reg. req'd). Report abuse:
> http://www.autoforumz.com/eform.php?p=692541 >> Stay informed about: EGR Problem,1991 Acura Integra |
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Joined: Oct 23, 2005
Posts: 2
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(Msg. 6) Posted: Mon Oct 24, 2005 1:03 am
Post subject: Re: EGR Problem,1991 Acura Integra [Login to view extended thread Info.]
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Hey
All they replaced was the EGR valve itself,and some solenoid they did not tell me the exact name,but im gonna go out on a limb and assume that it was the control valve solenoid you spoke of.They did not replace the valve lift sensor or run any tests on it.
They did a Vacum test and a compression test and both came out fine. >> Stay informed about: EGR Problem,1991 Acura Integra |
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External
Since: Apr 20, 2005
Posts: 888
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(Msg. 7) Posted: Fri Oct 28, 2005 11:55 pm
Post subject: Re: Re: EGR Problem,1991 Acura Integra [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Kody wrote in
<snip>
> All they replaced was the EGR valve itself,and some solenoid they did
> not tell me the exact name,but im gonna go out on a limb and assume
> that it was the control valve solenoid you spoke of.
Yep.
> They did not
> replace the valve lift sensor or run any tests on it.
As I said, they don't understand the system. That lift sensor is now /one
of/ the most likely sources of your error. Having said that, you'd better
ask if the lift sensor was part of the EGR valve assembly. It matters for
what you do next.
The ECU has a map of acceptable valve lifts stored in its memory. It
adjusts valve lift with the control solenoid, then measures what it's done
by reading the signal from the valve lift sensor.
If the ECU is unable to receive the correct signal from the sensor, it will
set a code.
Why has the ECU not been able to make the sensor return the signal it wants
to see?
1) Vacuum leak due to split or deteriorates hoses
2) Broken or disconnected wires (usually at the connector)
3) Valve lift sensor bad
4) EGR valve carboned up and sticking
5) Control Solenoid bad
>
> They did a Vacum test and a compression test and both came out fine.
>
They shotgunned the problem. And like most "spray-and-pray" efforts, it
didn't work.
--
TeGGeR®
The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/ >> Stay informed about: EGR Problem,1991 Acura Integra |
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Since: Jun 21, 2005
Posts: 30
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(Msg. 8) Posted: Sat Oct 29, 2005 2:55 pm
Post subject: Re: Re: EGR Problem,1991 Acura Integra [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Are you/they sure that there is adequate vacuum available at the control
solenoid? The vacuum regulator is another source of problems.
David Short
Acura God
"TeGGeR®" wrote in message
> Kody wrote in
>
>
> <snip>
>
>
>> All they replaced was the EGR valve itself,and some solenoid they did
>> not tell me the exact name,but im gonna go out on a limb and assume
>> that it was the control valve solenoid you spoke of.
>
>
> Yep.
>
>
>
>> They did not
>> replace the valve lift sensor or run any tests on it.
>
>
> As I said, they don't understand the system. That lift sensor is now /one
> of/ the most likely sources of your error. Having said that, you'd better
> ask if the lift sensor was part of the EGR valve assembly. It matters for
> what you do next.
>
> The ECU has a map of acceptable valve lifts stored in its memory. It
> adjusts valve lift with the control solenoid, then measures what it's done
> by reading the signal from the valve lift sensor.
>
> If the ECU is unable to receive the correct signal from the sensor, it
> will
> set a code.
>
> Why has the ECU not been able to make the sensor return the signal it
> wants
> to see?
> 1) Vacuum leak due to split or deteriorates hoses
> 2) Broken or disconnected wires (usually at the connector)
> 3) Valve lift sensor bad
> 4) EGR valve carboned up and sticking
> 5) Control Solenoid bad
>
>
>>
>> They did a Vacum test and a compression test and both came out fine.
>>
>
>
> They shotgunned the problem. And like most "spray-and-pray" efforts, it
> didn't work.
>
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/ >> Stay informed about: EGR Problem,1991 Acura Integra |
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Since: Apr 20, 2005
Posts: 888
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(Msg. 9) Posted: Sat Oct 29, 2005 8:55 pm
Post subject: Re: Re: EGR Problem,1991 Acura Integra [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Acura God" wrote in
<snip>
>>
>>
>>
> Are you/they sure that there is adequate vacuum available at the
> control solenoid? The vacuum regulator is another source of problems.
>
You mean the Constant Vacuum Control Valve. Good point.
If you unplug the hose going from the control solenoid to the air chamber
(at the solenoid), and connect a Mity-Vac to it, you should be able to
obtain 6 to 10 inches of vacuum with the engine idling. If not, the system
will have insufficient vacuum to pull the EGR valve open the correct
amount, just as if one of the hoses was split.
--
TeGGeR®
The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/ >> Stay informed about: EGR Problem,1991 Acura Integra |
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