Honda Car Forum

Hello,
The fuel pump in my 92 Accord LX (auto trans) runs for a while after
driving and key is removed from ignition. It starts off running
continuously, then cycles off and on with the on times decreasing and
off times increasing until it finally stops after several minutes.

What the heck is going on? Relay problem? Sensor problem? Gas cap
problem?

Thx!

The fan on my accord does exactly this as you describe, check and see if it
is the fan. If it is indeed the fuel pump, than I am stumped.

--
Rocket

'87 TRX250R
'84 200ES Big Red
"joe" <joeisen@postmaster.co.uk> wrote in message
news:407aaaf9.0312291600.57d14423@posting.google.c om...
> Hello,
> The fuel pump in my 92 Accord LX (auto trans) runs for a while after
> driving and key is removed from ignition. It starts off running
> continuously, then cycles off and on with the on times decreasing and
> off times increasing until it finally stops after several minutes.
>
> What the heck is going on? Relay problem? Sensor problem? Gas cap
> problem?
>
> Thx!

I would suspect a leaky injector.

mike hunt



joe wrote:
>
> Hello,
> The fuel pump in my 92 Accord LX (auto trans) runs for a while after
> driving and key is removed from ignition. It starts off running
> continuously, then cycles off and on with the on times decreasing and
> off times increasing until it finally stops after several minutes.
>
> What the heck is going on? Relay problem? Sensor problem? Gas cap
> problem?
>
> Thx!

The only way a leaky fuel injector would cause that symptom is if there
is a control loop that actively maintains fuel pressure when the
ignition is off. I am not aware of any car where this is the case.
Perhaps you have some references on this?



MajorDomo@mailcity.com wrote:
>
> I would suspect a leaky injector.
>
> mike hunt
>
> joe wrote:
> >
> > Hello,
> > The fuel pump in my 92 Accord LX (auto trans) runs for a while after
> > driving and key is removed from ignition. It starts off running
> > continuously, then cycles off and on with the on times decreasing and
> > off times increasing until it finally stops after several minutes.
> >
> > What the heck is going on? Relay problem? Sensor problem? Gas cap
> > problem?
> >
> > Thx!

If your fuel pump is running then it is a stuck relay as opposed to leaky
injector as posted previous. The drop in fuel rail pressure caused by a
leaky fuel injector would not cause a pump to operate at all with the key
off. If by some paranormal chance that the fuel pump was wired up to
maintain fuel pressure at all times it would not take more that a couple
seconds to do so. If an injector was leaking that bad then you wouldn't be
able to start your engine due to hydraulic lock of the piston in the
cylinder.

I have seen water injested into an engine which caused hydraulic lockup and
it through a rod through the side of the block. Little side note

CaptainKrunch


"joe" <joeisen@postmaster.co.uk> wrote in message
news:407aaaf9.0312291600.57d14423@posting.google.c om...
> Hello,
> The fuel pump in my 92 Accord LX (auto trans) runs for a while after
> driving and key is removed from ignition. It starts off running
> continuously, then cycles off and on with the on times decreasing and
> off times increasing until it finally stops after several minutes.
>
> What the heck is going on? Relay problem? Sensor problem? Gas cap
> problem?
>
> Thx!

"Randolph" <trash@junkmail.com> wrote in message
news:3FF0F625.71E75A0E@junkmail.com...
> The only way a leaky fuel injector would cause that symptom is if there
> is a control loop that actively maintains fuel pressure when the
> ignition is off. I am not aware of any car where this is the case.
> Perhaps you have some references on this?

Consider the source....

> MajorDomo@mailcity.com wrote:
> >
> > I would suspect a leaky injector.
> >
> > mike hunt
> >
> > joe wrote:
> > >
> > > Hello,
> > > The fuel pump in my 92 Accord LX (auto trans) runs for a while after
> > > driving and key is removed from ignition. It starts off running
> > > continuously, then cycles off and on with the on times decreasing and
> > > off times increasing until it finally stops after several minutes.
> > >
> > > What the heck is going on? Relay problem? Sensor problem? Gas cap
> > > problem?
> > >
> > > Thx!

<MajorDomo@mailcity.com> wrote in message
news:3FF0C0F5.649B2853@mailcity.com...
> I would suspect a leaky injector.
>
> mike hunt

(Sigh)...a leaky injector would not create that situation...fuel pumps wont
run in *any* car after the ignition is turned off.

It is indeed a relay problem...and ignore this dolt in everything he
says...he pulls shit out of his ass, and has no real car experience
whatsoever. He has also been caught lying on *many* occasions.

Good luck.

--
'03 S2000
'94 Accord

It's just about going fast...that's all...

http://home.insight.rr.com/cgreen/

"CaptainKrunch" <nothing@nobody.com> wrote in message news:<_sadnWbcGN6yam2iRVn-sA@comcast.com>...
> If your fuel pump is running then it is a stuck relay as opposed to leaky
> injector as posted previous.

OK; would this be the "main relay" (which I understand controls the
PGM FI), or is there a separate fuel pump relay? And if so, do you
know where it is? Thx!

Indeed a stuck relay is another area to check. If you believe
turning the key to the off position instantly cuts all power to
the fuel system, how then would the relay still be powered and
the pump still be running? Since the fuel loop system is powered
through the F/A ratio process controller. If the relay was
burned in the on position then the pump would stop as well when
the key is turned to the off position, if not it would be
constantly running. Because it is a complicated system beyond the
understanding of the overage owner I would have suggest he have
the vehicle connected to a system analyzed and have a technician
determine the reason for the fault. Doing that however brings a
bunch of crap about how we can fix our own
cars why pay a diagnostic fee. That is all will say on the
subject


mike hunt




CaptainKrunch wrote:
>
> If your fuel pump is running then it is a stuck relay as opposed to leaky
> injector as posted previous. The drop in fuel rail pressure caused by a
> leaky fuel injector would not cause a pump to operate at all with the key
> off. If by some paranormal chance that the fuel pump was wired up to
> maintain fuel pressure at all times it would not take more that a couple
> seconds to do so. If an injector was leaking that bad then you wouldn't be
> able to start your engine due to hydraulic lock of the piston in the
> cylinder.
>
> I have seen water injested into an engine which caused hydraulic lockup and
> it through a rod through the side of the block. Little side note
>
> CaptainKrunch
>
> "joe" <joeisen@postmaster.co.uk> wrote in message
> news:407aaaf9.0312291600.57d14423@posting.google.c om...
> > Hello,
> > The fuel pump in my 92 Accord LX (auto trans) runs for a while after
> > driving and key is removed from ignition. It starts off running
> > continuously, then cycles off and on with the on times decreasing and
> > off times increasing until it finally stops after several minutes.
> >
> > What the heck is going on? Relay problem? Sensor problem? Gas cap
> > problem?
> >
> > Thx!

<MajorDomo@mailcity.com> wrote in message
news:3FF1B3D2.103898DE@mailcity.com...
> Indeed a stuck relay is another area to check.

I thought you suspected a (LOL) leaking injector?

> If you believe
> turning the key to the off position instantly cuts all power to
> the fuel system, how then would the relay still be powered and
> the pump still be running?

Its *NOT* "powered"...its stuck!

Only an idiot wouldn't know the difference...sheesh...

> Since the fuel loop system is powered
> through the F/A ratio process controller.

(Yawn) No its not. F/A ratio is determined by injector pulse widths. The
fuel "loop" system is of very basic mechanical premise.

Yet again, you talk out your ass, and prove, yet again, you know nothing.

> If the relay was
> burned in the on position then the pump would stop as well when
> the key is turned to the off position, if not it would be
> constantly running.

Again wrong.

>Because it is a complicated system beyond the
> understanding of the overage owner

Its actually a very basic system. And anybody who wanted to take 30 minutes
could understand very easily.

It is complicated (obviously) beyond the understanding of you maybe.

> I would have suggest he have
> the vehicle connected to a system analyzed and have a technician
> determine the reason for the fault.

Here we go...

> Doing that however brings a
> bunch of crap about how we can fix our own
> cars why pay a diagnostic fee.

Take some basic english classes, will ya Mikey?

> That is all will say on the
> subject
>
>
> mike hunt

Good...no more lies and crap pulled from your ass.

--
'03 S2000
'94 Accord

It's just about going fast...that's all...

http://home.insight.rr.com/cgreen/