From: aarcuda69062 on
In article <hdllp1$u20$3(a)news.eternal-september.org>,
"Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote:

> the dealer should have put the car on a scope to check the ignition system.
> Aftermarket ignition can cause those symptoms that the parts can be checked
> with a scope. The MAF sensor probably only needed cleaning.

Cleaning of what?
From: Ray O on

"aarcuda69062" <nonelson(a)sbcglobal.net> wrote in message
news:nonelson-F26100.13075014112009(a)news.eternal-september.org...
> In article <hdllp1$u20$3(a)news.eternal-september.org>,
> "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote:
>
>> the dealer should have put the car on a scope to check the ignition
>> system.
>> Aftermarket ignition can cause those symptoms that the parts can be
>> checked
>> with a scope. The MAF sensor probably only needed cleaning.
>
> Cleaning of what?

The hot wire can get dirty, and the dirt can act like an insulator and
prevent the air flowing past the sensor from cooling the wire properly. The
sensor is not supposed to be serviceable, but a shot of brake cleaner
sometimes does the trick.
--

Ray O
(correct punctuation to reply)


From: aarcuda69062 on
In article <hdo9b1$irt$1(a)news.eternal-september.org>,
"Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote:

> "aarcuda69062" <nonelson(a)sbcglobal.net> wrote in message
> news:nonelson-F26100.13075014112009(a)news.eternal-september.org...
> > In article <hdllp1$u20$3(a)news.eternal-september.org>,
> > "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote:
> >
> >> the dealer should have put the car on a scope to check the ignition
> >> system.
> >> Aftermarket ignition can cause those symptoms that the parts can be
> >> checked
> >> with a scope. The MAF sensor probably only needed cleaning.
> >
> > Cleaning of what?
>
> The hot wire can get dirty, and the dirt can act like an insulator and
> prevent the air flowing past the sensor from cooling the wire properly. The
> sensor is not supposed to be serviceable, but a shot of brake cleaner
> sometimes does the trick.

But that model year did not use a hot wire sensor.
From: Scott Dorsey on
aarcuda69062 <nonelson(a)sbcglobal.net> wrote:
>In article <hdo9b1$irt$1(a)news.eternal-september.org>,
> "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote:
>> "aarcuda69062" <nonelson(a)sbcglobal.net> wrote in message
>> news:nonelson-F26100.13075014112009(a)news.eternal-september.org...
>> > In article <hdllp1$u20$3(a)news.eternal-september.org>,
>> > "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote:
>> >
>> >> the dealer should have put the car on a scope to check the ignition
>> >> system.
>> >> Aftermarket ignition can cause those symptoms that the parts can be
>> >> checked
>> >> with a scope. The MAF sensor probably only needed cleaning.
>> >
>> > Cleaning of what?
>>
>> The hot wire can get dirty, and the dirt can act like an insulator and
>> prevent the air flowing past the sensor from cooling the wire properly. The
>> sensor is not supposed to be serviceable, but a shot of brake cleaner
>> sometimes does the trick.
>
>But that model year did not use a hot wire sensor.

In the case of the mechanical sensors, you can usually get into the
potentiometer element and give it a shot of a pot cleaner like Cailube,
and that will fix a lot of these problems for a while. While you're at
it make sure the vanes turn freely and put a drop of light machine oil on
each of the bearing points.

Inspect the element, though. If it's visibly worn, you may just have to
replace it.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."
From: Ray O on

"aarcuda69062" <nonelson(a)sbcglobal.net> wrote in message
news:nonelson-6EEB3C.08015515112009(a)news.eternal-september.org...
> In article <hdo9b1$irt$1(a)news.eternal-september.org>,
> "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote:
>
>> "aarcuda69062" <nonelson(a)sbcglobal.net> wrote in message
>> news:nonelson-F26100.13075014112009(a)news.eternal-september.org...
>> > In article <hdllp1$u20$3(a)news.eternal-september.org>,
>> > "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote:
>> >
>> >> the dealer should have put the car on a scope to check the ignition
>> >> system.
>> >> Aftermarket ignition can cause those symptoms that the parts can be
>> >> checked
>> >> with a scope. The MAF sensor probably only needed cleaning.
>> >
>> > Cleaning of what?
>>
>> The hot wire can get dirty, and the dirt can act like an insulator and
>> prevent the air flowing past the sensor from cooling the wire properly.
>> The
>> sensor is not supposed to be serviceable, but a shot of brake cleaner
>> sometimes does the trick.
>
> But that model year did not use a hot wire sensor.

Oops, my bad. When I responded to Ralph Mowery's post that mentioned a MAF
sensor, I assumed the car had one without thinking about the model year.

To Ralph, Toyota referred to the potentiometer type sensor on that vintage
Camry as an "air flow meter." Air flow meters were pretty reliable so I
could see why it was low on the list of suspects but they are easy to check
with a meter.
--

Ray O
(correct punctuation to reply)