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-   -   What is the Problem - UPDATE (https://www.gtcarz.com/honda-mailing-list-327/what-problem-update-288022/)

motsco_ _ 03-15-2005 12:16 PM

Re: What is the Problem - UPDATE
 
K-town wrote:
> <snip>
>
>>don't forget to resolder your main relay!

>
> </snip>
>
> Sorry, but my memory isn't the best. Why do I need to do this? Is there a
> way to check the main relay to see if it's good or bad before taking it
> apart and resoldering? Besides the fuel pump, what else does the main relay
> control? I know there is a slight problem with my main relay because
> sometimes when it's hot inside the car, it won't click when the check-engine
> light goes off, and of course, the car won't start. I have to squeeze the
> main relay and hold it to make it click so my car will fire up.
>
> Thanx again! :-)
>
> Jonathan
>
> P.S. The last 2 sentences have been going on for awhile, and may not be
> directly related to my current problem.
>


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

You've described a 'textbook case' of main relay failure. Resolder it
and you'll overcome a major headache. Meantime, don't lend your Honda to
somebody who is trying to go somewhere important. :-)

'Curly'


Michael Pardee 03-15-2005 07:23 PM

Re: What is the Problem - UPDATE
 
"K-town" <none_of@your.biz> wrote in message
news:z_DZd.29209$_i3.1160255@twister.southeast.rr. com...
> <snip>
>> don't forget to resolder your main relay!

> </snip>
>
> Sorry, but my memory isn't the best. Why do I need to do this? Is there
> a way to check the main relay to see if it's good or bad before taking it
> apart and resoldering? Besides the fuel pump, what else does the main
> relay control? I know there is a slight problem with my main relay
> because sometimes when it's hot inside the car, it won't click when the
> check-engine light goes off, and of course, the car won't start. I have
> to squeeze the main relay and hold it to make it click so my car will fire
> up.
>
> Thanx again! :-)
>
> Jonathan
>
> P.S. The last 2 sentences have been going on for awhile, and may not be
> directly related to my current problem.
>

The relay controls the fuel pump, and if the power to the pump is
intermittent it will cause the ECU to report problems with the fuel
injectors (sound familiar?) and the engine to run very badly. A guage on the
fuel rail to measure the fuel pressure will tell everything about the fuel
delivery system - including the main relay - and what part it plays (if any)
in your symptoms.

You already know from visual inspection the distributor is bad and from
history the main relay is bad. Replacing the distributor and resoldering or
replacing the main relay could very well be all you need to get back on the
road. If not, at least those known bad parts won't be making you crazy any
more.

Mike



Michael Pardee 03-15-2005 07:23 PM

Re: What is the Problem - UPDATE
 
"K-town" <none_of@your.biz> wrote in message
news:z_DZd.29209$_i3.1160255@twister.southeast.rr. com...
> <snip>
>> don't forget to resolder your main relay!

> </snip>
>
> Sorry, but my memory isn't the best. Why do I need to do this? Is there
> a way to check the main relay to see if it's good or bad before taking it
> apart and resoldering? Besides the fuel pump, what else does the main
> relay control? I know there is a slight problem with my main relay
> because sometimes when it's hot inside the car, it won't click when the
> check-engine light goes off, and of course, the car won't start. I have
> to squeeze the main relay and hold it to make it click so my car will fire
> up.
>
> Thanx again! :-)
>
> Jonathan
>
> P.S. The last 2 sentences have been going on for awhile, and may not be
> directly related to my current problem.
>

The relay controls the fuel pump, and if the power to the pump is
intermittent it will cause the ECU to report problems with the fuel
injectors (sound familiar?) and the engine to run very badly. A guage on the
fuel rail to measure the fuel pressure will tell everything about the fuel
delivery system - including the main relay - and what part it plays (if any)
in your symptoms.

You already know from visual inspection the distributor is bad and from
history the main relay is bad. Replacing the distributor and resoldering or
replacing the main relay could very well be all you need to get back on the
road. If not, at least those known bad parts won't be making you crazy any
more.

Mike



TeGGer® 03-15-2005 08:42 PM

Re: What is the Problem - UPDATE
 
"Michael Pardee" <michaeltnull@cybertrails.com> wrote in
news:IoCdnftUKZjr4arfRVn-tA@sedona.net:


> The relay controls the fuel pump, and if the power to the pump is
> intermittent it will cause the ECU to report problems with the fuel
> injectors (sound familiar?) and the engine to run very badly.




The injectors themselves receive their power from termianl 3 on the Main
Relay. All the ECU does is ground them as needed, causing current to flow.

If the solder is cracked and terminal 3 fails to provide power to the
injectors, the ECU sees a no-voltage when it tries to ground the injectors
and sets a code 16.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

TeGGer® 03-15-2005 08:42 PM

Re: What is the Problem - UPDATE
 
"Michael Pardee" <michaeltnull@cybertrails.com> wrote in
news:IoCdnftUKZjr4arfRVn-tA@sedona.net:


> The relay controls the fuel pump, and if the power to the pump is
> intermittent it will cause the ECU to report problems with the fuel
> injectors (sound familiar?) and the engine to run very badly.




The injectors themselves receive their power from termianl 3 on the Main
Relay. All the ECU does is ground them as needed, causing current to flow.

If the solder is cracked and terminal 3 fails to provide power to the
injectors, the ECU sees a no-voltage when it tries to ground the injectors
and sets a code 16.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

jim beam 03-15-2005 10:37 PM

Re: What is the Problem - UPDATE
 
TeGGer® wrote:
> "Michael Pardee" <michaeltnull@cybertrails.com> wrote in
> news:IoCdnftUKZjr4arfRVn-tA@sedona.net:
>
>
>
>>The relay controls the fuel pump, and if the power to the pump is
>>intermittent it will cause the ECU to report problems with the fuel
>>injectors (sound familiar?) and the engine to run very badly.

>
>
>
>
> The injectors themselves receive their power from termianl 3 on the Main
> Relay. All the ECU does is ground them as needed, causing current to flow.
>
> If the solder is cracked and terminal 3 fails to provide power to the
> injectors, the ECU sees a no-voltage when it tries to ground the injectors
> and sets a code 16.


thank you sir! couldn't say it better myself.


jim beam 03-15-2005 10:37 PM

Re: What is the Problem - UPDATE
 
TeGGer® wrote:
> "Michael Pardee" <michaeltnull@cybertrails.com> wrote in
> news:IoCdnftUKZjr4arfRVn-tA@sedona.net:
>
>
>
>>The relay controls the fuel pump, and if the power to the pump is
>>intermittent it will cause the ECU to report problems with the fuel
>>injectors (sound familiar?) and the engine to run very badly.

>
>
>
>
> The injectors themselves receive their power from termianl 3 on the Main
> Relay. All the ECU does is ground them as needed, causing current to flow.
>
> If the solder is cracked and terminal 3 fails to provide power to the
> injectors, the ECU sees a no-voltage when it tries to ground the injectors
> and sets a code 16.


thank you sir! couldn't say it better myself.


jim beam 03-15-2005 10:38 PM

Re: What is the Problem - UPDATE
 
K-town wrote:
> <snip>
>
>>don't forget to resolder your main relay!

>
> </snip>
>
> Sorry, but my memory isn't the best. Why do I need to do this? Is there a
> way to check the main relay to see if it's good or bad before taking it
> apart and resoldering? Besides the fuel pump, what else does the main relay
> control? I know there is a slight problem with my main relay because
> sometimes when it's hot inside the car, it won't click when the check-engine
> light goes off, and of course, the car won't start. I have to squeeze the
> main relay and hold it to make it click so my car will fire up.
>
> Thanx again! :-)
>
> Jonathan
>
> P.S. The last 2 sentences have been going on for awhile, and may not be
> directly related to my current problem.


earlier, you mentioned the ecu giving code 16. that's almost always
main relay.


jim beam 03-15-2005 10:38 PM

Re: What is the Problem - UPDATE
 
K-town wrote:
> <snip>
>
>>don't forget to resolder your main relay!

>
> </snip>
>
> Sorry, but my memory isn't the best. Why do I need to do this? Is there a
> way to check the main relay to see if it's good or bad before taking it
> apart and resoldering? Besides the fuel pump, what else does the main relay
> control? I know there is a slight problem with my main relay because
> sometimes when it's hot inside the car, it won't click when the check-engine
> light goes off, and of course, the car won't start. I have to squeeze the
> main relay and hold it to make it click so my car will fire up.
>
> Thanx again! :-)
>
> Jonathan
>
> P.S. The last 2 sentences have been going on for awhile, and may not be
> directly related to my current problem.


earlier, you mentioned the ecu giving code 16. that's almost always
main relay.


K-town 03-16-2005 12:13 PM

Re: What is the Problem - UPDATE
 
"jim beam" <nospam@example.net> wrote in message
news:1110944318.1597a9dbf17dddeaa0286530fea2785f@t eranews...
> K-town wrote:
>> <snip>
>>
>>>don't forget to resolder your main relay!

>>
>> </snip>
>>
>> Sorry, but my memory isn't the best. Why do I need to do this? Is there
>> a way to check the main relay to see if it's good or bad before taking it
>> apart and resoldering? Besides the fuel pump, what else does the main
>> relay control? I know there is a slight problem with my main relay
>> because sometimes when it's hot inside the car, it won't click when the
>> check-engine light goes off, and of course, the car won't start. I have
>> to squeeze the main relay and hold it to make it click so my car will
>> fire up.
>>
>> Thanx again! :-)
>>
>> Jonathan
>>
>> P.S. The last 2 sentences have been going on for awhile, and may not be
>> directly related to my current problem.

>
> earlier, you mentioned the ecu giving code 16. that's almost always main
> relay.


I've never taken a main relay apart before, so is it a no-brainer as to what
I will have to resolder? Is there a URL or some sort of reference guide I
can read that will tell me about the inner-workings of the main relay? I
just don't want to solder the wrong thing or screw it up some other way.

Thanx,

Jonathan



K-town 03-16-2005 12:13 PM

Re: What is the Problem - UPDATE
 
"jim beam" <nospam@example.net> wrote in message
news:1110944318.1597a9dbf17dddeaa0286530fea2785f@t eranews...
> K-town wrote:
>> <snip>
>>
>>>don't forget to resolder your main relay!

>>
>> </snip>
>>
>> Sorry, but my memory isn't the best. Why do I need to do this? Is there
>> a way to check the main relay to see if it's good or bad before taking it
>> apart and resoldering? Besides the fuel pump, what else does the main
>> relay control? I know there is a slight problem with my main relay
>> because sometimes when it's hot inside the car, it won't click when the
>> check-engine light goes off, and of course, the car won't start. I have
>> to squeeze the main relay and hold it to make it click so my car will
>> fire up.
>>
>> Thanx again! :-)
>>
>> Jonathan
>>
>> P.S. The last 2 sentences have been going on for awhile, and may not be
>> directly related to my current problem.

>
> earlier, you mentioned the ecu giving code 16. that's almost always main
> relay.


I've never taken a main relay apart before, so is it a no-brainer as to what
I will have to resolder? Is there a URL or some sort of reference guide I
can read that will tell me about the inner-workings of the main relay? I
just don't want to solder the wrong thing or screw it up some other way.

Thanx,

Jonathan



Randolph 03-16-2005 02:40 PM

Re: What is the Problem - UPDATE
 

K-town wrote:

> I've never taken a main relay apart before, so is it a no-brainer as to what
> I will have to resolder? Is there a URL or some sort of reference guide I
> can read that will tell me about the inner-workings of the main relay? I
> just don't want to solder the wrong thing or screw it up some other way.


A Google search for honda main relay gives you exactly what you want.
http://www.markl.f9.co.uk/howto/elec...main-relay.htm is
one of many sites that came up.


================================================== =====
A very modest collection of Honda tech info can be found at:
http://www.geocities.com/ng_randolph

Randolph 03-16-2005 02:40 PM

Re: What is the Problem - UPDATE
 

K-town wrote:

> I've never taken a main relay apart before, so is it a no-brainer as to what
> I will have to resolder? Is there a URL or some sort of reference guide I
> can read that will tell me about the inner-workings of the main relay? I
> just don't want to solder the wrong thing or screw it up some other way.


A Google search for honda main relay gives you exactly what you want.
http://www.markl.f9.co.uk/howto/elec...main-relay.htm is
one of many sites that came up.


================================================== =====
A very modest collection of Honda tech info can be found at:
http://www.geocities.com/ng_randolph

K-town 03-16-2005 06:06 PM

Re: What is the Problem - UPDATE
 
"Randolph" <trash@junkmail.com> wrote in message
news:42388BA0.136A858B@junkmail.com...
>
> K-town wrote:
>
>> I've never taken a main relay apart before, so is it a no-brainer as to
>> what
>> I will have to resolder? Is there a URL or some sort of reference guide
>> I
>> can read that will tell me about the inner-workings of the main relay? I
>> just don't want to solder the wrong thing or screw it up some other way.

>
> A Google search for honda main relay gives you exactly what you want.
> http://www.markl.f9.co.uk/howto/elec...main-relay.htm is
> one of many sites that came up.
>
>
> ================================================== =====
> A very modest collection of Honda tech info can be found at:
> http://www.geocities.com/ng_randolph


Thanx a million! :-)

Jonathan



K-town 03-16-2005 06:06 PM

Re: What is the Problem - UPDATE
 
"Randolph" <trash@junkmail.com> wrote in message
news:42388BA0.136A858B@junkmail.com...
>
> K-town wrote:
>
>> I've never taken a main relay apart before, so is it a no-brainer as to
>> what
>> I will have to resolder? Is there a URL or some sort of reference guide
>> I
>> can read that will tell me about the inner-workings of the main relay? I
>> just don't want to solder the wrong thing or screw it up some other way.

>
> A Google search for honda main relay gives you exactly what you want.
> http://www.markl.f9.co.uk/howto/elec...main-relay.htm is
> one of many sites that came up.
>
>
> ================================================== =====
> A very modest collection of Honda tech info can be found at:
> http://www.geocities.com/ng_randolph


Thanx a million! :-)

Jonathan




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