PING- HT 03 V6 Sonata- stalling, lack of power

Sounds like a problem I had.
Could be a throttle position sensor.  The engine does not quit, but will run
very slow, enough power to get you off the road, or even get home.
Sometimes shutting it down and restarting will get you going for a while.
Eventually, it will only go slow.

The dealer should have known better.  IMO, you got screwed on the injection
flush.  If an injector is partly clogged, is it going to be fine for a few
days and then  block fuel again?  Then be OK for a few more days:  Doubt it.

Thanks Ed...will keep all posted and invite additional input...


Steve



"Ed Pawlowski"  wrote in message



Sounds like a problem I had.
Could be a throttle position sensor.  The engine does not quit, but will run
very slow, enough power to get you off the road, or even get home.
Sometimes shutting it down and restarting will get you going for a while.
Eventually, it will only go slow.

The dealer should have known better.  IMO, you got screwed on the injection
flush.  If an injector is partly clogged, is it going to be fine for a few
days and then  block fuel again?  Then be OK for a few more days:  Doubt it.




No trees were killed in the sending of this message. However a large number
of electrons were terribly inconvenienced.

But I do plan on a tune-up when I get home... too Ed.


Steve


HT and others;

My wife's 03 with 107k miles on it has recently begun to act up; no power,
unable to accelerate, occasionally dying, etc. Took it to my local shop- no
troubles found (fule pressure dead on) except downstream O2 sensors needed
replaced. 3 days later, same problem, lack of power, no acceleration, etc.
Took it to our Hyundai dealer- codes found- misfires on cyls. 3 & 5 and
decided that a fuel injection system flush would help. Today, it happened
again. I'm into this now $500 and it appears to me to be a fuel issue, or
lack thereof. We're second owners, little old man before us had maintenance
done religiously. I am on the road until the last week of July. Am I heading
down the right road? Is the pump accessible from the rear seat? I'm also
thinking about plugs and wires. Possible the fuel pump sock is getting
clogged from cheap unfiltered fuel?

TIA,

Steve


No trees were killed in the sending of this message. However a large number
of electrons were terribly inconvenienced.




No trees were killed in the sending of this message. However a large number
of electrons were terribly inconvenienced.

Sounds like it could be a clogged cat also.

Misfires could be ignition problem. If you haven't already, you should
have the plugs and wires changed.
On 7/1/2011 10:04 PM, Steve in AZ wrote:

Ever get a resolution?

wrote:


I had the same problem with my 2004 Sonata. Ignition wires solved it.
It also could be a bad coil, according to the dealer.

Funny thing is when my car was mis-firing and stalling out? The check
engine light NEVER went on. I know the light works because it comes on
when the car is off and I turn the key on. Same as the seat belt
lights.

Brian

Ed et al;

Well, did new plugs and wires today. 1st week I've been home in 2 months!
Anyway, original plugs measured- .060-.070!!!!

The wife's gonna run her to Laughlin tomorrow and take that killer 6% grade
out of the Colorado River Valley and we'll see. Just took it for a
shakedown, hard acceleration, full A/C, high speed, etc. No problems!

The dealer and my local guy told me that cyl 3 & 5 misfire codes were
appearing. With the tension on the original wires and the near 90 degree
bend, I think we got her!!!

Steve



"Ed Pawlowski"  wrote in message



Ever get a resolution?




No trees were killed in the sending of this message. However a large number
of electrons were terribly inconvenienced.

Good luck.  If they were original wires, it was about time for them to start
acting up.

UPDATE-

Well, after a battery replacement, the wifey took her to Laughlin and
half-way down the hill, turned back up in 113 degree heat, 65MPH with A/C on
full blast....

SUCCESS!!!

Thanks all!!!!


"Ed Pawlowski"  wrote in message



Good luck.  If they were original wires, it was about time for them to start
acting up.




No trees were killed in the sending of this message. However a large number
of electrons were terribly inconvenienced.

Well, I though it was fixed...

I ended up ordering a coil assy. I drove it yesterday and the day before and
the loss of power gremlins appeared again. Should be here tomorrow and I
HOPEFULLY will be done with this...






UPDATE-

Well, after a battery replacement, the wifey took her to Laughlin and
half-way down the hill, turned back up in 113 degree heat, 65MPH with A/C on
full blast....

SUCCESS!!!

Thanks all!!!!


"Ed Pawlowski"  wrote in message



Good luck.  If they were original wires, it was about time for them to start
acting up.




No trees were killed in the sending of this message. However a large number
of electrons were terribly inconvenienced.




No trees were killed in the sending of this message. However a large number
of electrons were terribly inconvenienced.