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Discussion Starter · #2 ·
That's not a valid code. PO130 is an O2 sensor code (related to the heater
circuit I believe), and P1300 involves one of the igniter circuits, but I
can't remember which one. Are you the dude with the Avalon thats misfiring
on #4?
 
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Discussion Starter · #3 ·
Yes, I'm the dude with Avalon that's misfiring on # 4. P01300 is one of the
two codes that were returned from the diagnostic that the Toyota service
department conduct on the car. The dealer claims that they need to take
the engine apart to figure out what's wrong, but I have the feeling that
they're trying to hustle me, especially since being advised, by the fine
folks on this forum, about the Leak-Down Test.

So, now I feel that I have enough information to tackle the problem, but I
was hoping to get an explanation of DTC P01300 as an added bit of
information for resolving this problem.
 
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Discussion Starter · #4 ·
I gotcha. But, that code you are talking about isn't a code. Too many
digits. Can you reconfirm either PO130 or P1300?
 
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Discussion Starter · #5 ·
Well, that's the code that's on the service receipt, but on the other hand
it may not be that important since I think I may have a good bead on how
to rectify the problem.

Hey, I have another question for you. If the rings in the cyclinder is
sticking, shouldn't there be smoke coming from the exhaust while the car
is idling and when I'm driving along. I know that it will smoke in both
instances it there's a cracked ring.

cea1
 
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Discussion Starter · #6 ·
>>>Well, that's the code that's on the service receipt, but on the other
hand
it may not be that important since I think I may have a good bead on how
to rectify the problem. <<<

The service advisor must have mistyped the code. I think that is is rather
important, because one of those codes would definitely indicate an ignition
issue, but I'm interested to hear what you think the deal is.

>>>Hey, I have another question for you. If the rings in the cyclinder is

sticking, shouldn't there be smoke coming from the exhaust while the car
is idling and when I'm driving along. I know that it will smoke in both
instances it there's a cracked ring.>>>

I think that if you really do have a ring-related compression issue bad
enough to cause a misfire like what you describe then there would be other
symptoms like oil consumption and smoke, yes. But, I haven't looked at the
car so my opinion in here only goes so far.
 
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Discussion Starter · #7 ·
Okay, I'm hoping to get an opportunity to do a dry and wet compression
check sometime over the next couple of days, I'll hit you back with my
findings.
 
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Discussion Starter · #9 ·
Personally, I think the P0130 Code is a response to the misfire problem. I
wouldn't attempt to chase the O2 Sensor issue until the misfire is found and
corrected.

A misfiring cylinder will send an unburned fuel load into the exhaust
system, and the O2 Sensor can return an out-of-range report that is posted
by the Code as an O2 Sensor failure.





"cea1" <[email protected]> wrote in message
news:[email protected]
> Yes, I'm the dude with Avalon that's misfiring on # 4. P01300 is one of
> the
> two codes that were returned from the diagnostic that the Toyota service
> department conduct on the car. The dealer claims that they need to take
> the engine apart to figure out what's wrong, but I have the feeling that
> they're trying to hustle me, especially since being advised, by the fine
> folks on this forum, about the Leak-Down Test.
>
> So, now I feel that I have enough information to tackle the problem, but I
> was hoping to get an explanation of DTC P01300 as an added bit of
> information for resolving this problem.
>
 
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Discussion Starter · #10 ·
"qslim" <[email protected]> wrote in message
news:[email protected]
>>>>Well, that's the code that's on the service receipt, but on the other

> hand
> it may not be that important since I think I may have a good bead on how
> to rectify the problem. <<<
>
> The service advisor must have mistyped the code. I think that is is rather
> important, because one of those codes would definitely indicate an
> ignition
> issue, but I'm interested to hear what you think the deal is.
>
>>>>Hey, I have another question for you. If the rings in the cyclinder is

> sticking, shouldn't there be smoke coming from the exhaust while the car
> is idling and when I'm driving along. I know that it will smoke in both
> instances it there's a cracked ring.>>>
>
> I think that if you really do have a ring-related compression issue bad
> enough to cause a misfire like what you describe then there would be other
> symptoms like oil consumption and smoke, yes. But, I haven't looked at the
> car so my opinion in here only goes so far.
>


I tend to agree with your position here. If there is a ring related issue
that is serious enough to cause a misfire, there'd be other issues that
would be more alarming -- smoke in the exhaust, oil consumption, that sort
of thing. I'm with you though, without having the car in front of me, it is
pretty difficult to confirm or deny the dealerships diagnosis. On the
surface, I don't agree with them ...
 
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Discussion Starter · #11 ·
Jeff,

Thanks for your reply! After I'm able to conduct a compression test I'll
let you what I came up with!

Again Thanks A Million!

cea1
 
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Discussion Starter · #12 ·
Hey Jeff Strickland&quo,

I got a chance to do the compression (dry & wet) test on my car today. The
cyclinder only produced 10 pounds of pressures during both test. I checked
one of the other cyclinders, just for good measure, and found it to have
180lbs. psi.

My next move is have the cyclinder head rebuilt. Should I have both heads
reworked or just the one that's bad?

Ray O and qslim, if you're out there, please, weigh-in on this one for
me!

cea1
 
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Discussion Starter · #13 ·
On Tue, 27 Dec 2005 12:59:06 -0500, "cea1" <[email protected]> wrote:

>Hey Jeff Strickland&quo,
>
>I got a chance to do the compression (dry & wet) test on my car today. The
>cyclinder only produced 10 pounds of pressures during both test. I checked
>one of the other cyclinders, just for good measure, and found it to have
>180lbs. psi.
>
>My next move is have the cyclinder head rebuilt. Should I have both heads
>reworked or just the one that's bad?


Have them hook up a leakdown checker and confirm it's a valve
problem. And if it is, I'd do both sides at once, if for no other
reason than the other side can burn a valve or a seat and show up next
week. And the head gaskets are a periodic maintenance item. 95
Avalon with a V6, right? How many miles on the engine?

If it's higher mileage (six digits) have them check or do all the
stupid stuff while they are in there, like valve stem seals and the
other engine external seals, water pump and /or timing belts, freeze
plugs, etc. And check the bottom end - pull the pan, and Plastigage
the bearings looking for unusual wear.

There's no sense in taking the engine down far enough to do a valve
job without at least looking for other potential problems and jumping
on the easy ones now. Then you're all set for the next 100,000.

If you start thinking this is getting expensive "Why spend money, I
should scrap it!" remember that this car is already paid for - buy a
new car, and then you have four or five years of payments to look
forward to - a valve job sets you back the equivalent of two or three
monthly payments and that's it. And if your car isn't getting rusty,
you should be able to top a million miles of good service with
reasonable care.

--<< Bruce >>--

--
Bruce L. Bergman, Woodland Hills (Los Angeles) CA - Desktop
Electrician for Westend Electric - CA726700
5737 Kanan Rd. #359, Agoura CA 91301 (818) 889-9545
Spamtrapped address: Remove the python and the invalid, and use a net.
 
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Discussion Starter · #14 ·
You can _get by_ with only doing one, but I think you're better off having
both heads done because I think you AT LEAST need to look at the other head,
and since it has to come off to look at it, you may as well have the valves
reseated.

If you need to buy a head, then you need to think about buying two heads or
just one.




"cea1" <[email protected]> wrote in message
news:[email protected]
> Hey Jeff Strickland&quo,
>
> I got a chance to do the compression (dry & wet) test on my car today. The
> cyclinder only produced 10 pounds of pressures during both test. I checked
> one of the other cyclinders, just for good measure, and found it to have
> 180lbs. psi.
>
> My next move is have the cyclinder head rebuilt. Should I have both heads
> reworked or just the one that's bad?
>
> Ray O and qslim, if you're out there, please, weigh-in on this one for
> me!
>
> cea1
>
 
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