Help My 2001 Sonata check engine light came on and the codes came back for
EVAP system leak small and large. I've had mechanics tell me the fuel
filter needed to be changed (which I did) and that spark plugs need to be
changed also, as well as air filter and about anythign else they can come
up with. Do any of these have anything to do with the EVAP system. Car
will give a little lurch when driving it and then not accelerate well and
feel sluggish to drive. I get different stories from every place I take
it and am desperate for some info from anyone who can help as money is
tight and I don't have cash for extraneous repairs!

 

The fuel filter, spark plugs, and underhood air filter have *nothing* to
do
with an EVAP leak.

On the other hand, the EVAP leak has nothing to do with the lurch and
sluggishness, which could be related to the items above. On the other
hand, if your sluggish acceleration is only at slow speeds or from stops,
it sounds like the transmission is going into failsafe, indicating a
transmission or transmission control problem, which should store a code
in
the engine computer indicating the TCM's request for a check engine lamp
as
well as more descriptive codes in the TCM.

 

The fuel filter, spark plugs, and underhood air filter have *nothing* to
do
with an EVAP leak.

On the other hand, the EVAP leak has nothing to do with the lurch and
sluggishness, which could be related to the items above. On the other
hand, if your sluggish acceleration is only at slow speeds or from stops,
it sounds like the transmission is going into failsafe, indicating a
transmission or transmission control problem, which should store a code
in
the engine computer indicating the TCM's request for a check engine lamp
as
well as more descriptive codes in the TCM.

 

The fuel filter, spark plugs, and underhood air filter have *nothing* to
do
with an EVAP leak.

On the other hand, the EVAP leak has nothing to do with the lurch and
sluggishness, which could be related to the items above. On the other
hand, if your sluggish acceleration is only at slow speeds or from stops,
it sounds like the transmission is going into failsafe, indicating a
transmission or transmission control problem, which should store a code
in
the engine computer indicating the TCM's request for a check engine lamp
as
well as more descriptive codes in the TCM.

 

Yikes sounds scary. Looks like I'll have to take it back in and see if
they can identifiy the problem. Of note too is that the check engine
light goes off as the gas gauge gets close to "E". Does that make any
sense in the scheme of things? I did buy a new gas cap first off to see if
that was the issue but unfortunately not.

 

Yikes sounds scary. Looks like I'll have to take it back in and see if
they can identifiy the problem. Of note too is that the check engine
light goes off as the gas gauge gets close to "E". Does that make any
sense in the scheme of things? I did buy a new gas cap first off to see if
that was the issue but unfortunately not.

 

Yikes sounds scary. Looks like I'll have to take it back in and see if
they can identifiy the problem. Of note too is that the check engine
light goes off as the gas gauge gets close to "E". Does that make any
sense in the scheme of things? I did buy a new gas cap first off to see if
that was the issue but unfortunately not.

 

Yikes sounds scary. Looks like I'll have to take it back in and see if
they can identifiy the problem. Of note too is that the check engine
light goes off as the gas gauge gets close to "E". Does that make any
sense in the scheme of things? I did buy a new gas cap first off to see if
that was the issue but unfortunately not.

 

Yikes sounds scary. Looks like I'll have to take it back in and see if
they can identifiy the problem. Of note too is that the check engine
light goes off as the gas gauge gets close to "E". Does that make any
sense in the scheme of things? I did buy a new gas cap first off to see if
that was the issue but unfortunately not.

 

Yikes sounds scary. Looks like I'll have to take it back in and see if
they can identifiy the problem. Of note too is that the check engine
light goes off as the gas gauge gets close to "E". Does that make any
sense in the scheme of things? I did buy a new gas cap first off to see if
that was the issue but unfortunately not.

 

On Fri, 26 May 2006 12:41:14 -0400, "hyundaitech"
<notpublic@not.public.com> wrote:

>The fuel filter, spark plugs, and underhood air filter have *nothing* to
>do
>with an EVAP leak.
>
>On the other hand, the EVAP leak has nothing to do with the lurch and
>sluggishness, which could be related to the items above. On the other
>hand, if your sluggish acceleration is only at slow speeds or from stops,
>it sounds like the transmission is going into failsafe, indicating a
>transmission or transmission control problem, which should store a code
>in
>the engine computer indicating the TCM's request for a check engine lamp
>as
>well as more descriptive codes in the TCM.

could the EVAP message be from something as simple as a bad gasket on
the fuel filler cap?

 

On Fri, 26 May 2006 12:41:14 -0400, "hyundaitech"
<notpublic@not.public.com> wrote:

>The fuel filter, spark plugs, and underhood air filter have *nothing* to
>do
>with an EVAP leak.
>
>On the other hand, the EVAP leak has nothing to do with the lurch and
>sluggishness, which could be related to the items above. On the other
>hand, if your sluggish acceleration is only at slow speeds or from stops,
>it sounds like the transmission is going into failsafe, indicating a
>transmission or transmission control problem, which should store a code
>in
>the engine computer indicating the TCM's request for a check engine lamp
>as
>well as more descriptive codes in the TCM.

could the EVAP message be from something as simple as a bad gasket on
the fuel filler cap?

 

On Fri, 26 May 2006 12:41:14 -0400, "hyundaitech"
<notpublic@not.public.com> wrote:

>The fuel filter, spark plugs, and underhood air filter have *nothing* to
>do
>with an EVAP leak.
>
>On the other hand, the EVAP leak has nothing to do with the lurch and
>sluggishness, which could be related to the items above. On the other
>hand, if your sluggish acceleration is only at slow speeds or from stops,
>it sounds like the transmission is going into failsafe, indicating a
>transmission or transmission control problem, which should store a code
>in
>the engine computer indicating the TCM's request for a check engine lamp
>as
>well as more descriptive codes in the TCM.

could the EVAP message be from something as simple as a bad gasket on
the fuel filler cap?

 

That makes some sense for the EVAP trouble code. How quickly the tank
vacuums and bleeds down depends on the amount of fuel in the tank, so if
it's a small leak (presuming it's an actual leak), it may bleed down
slowly enough with the tank empty for the computer not to recognize the
leak.

 

That makes some sense for the EVAP trouble code. How quickly the tank
vacuums and bleeds down depends on the amount of fuel in the tank, so if
it's a small leak (presuming it's an actual leak), it may bleed down
slowly enough with the tank empty for the computer not to recognize the
leak.