John...

Removed the valve to have another look.The plunger moves ok.
Must be the solenoid thats not working properly,but seeing as
you can't dismantle it,how do I check this?

 

Sharon K.Cooke

"John..." wrote:
>
> Removed the valve to have another look.The plunger moves ok.
> Must be the solenoid thats not working properly,but seeing as
> you can't dismantle it,how do I check this?

Check for voltage at the lead going TO the IAC valve connector. If there's no
voltage detected, it's probably a bad TPS (throttle position sensor). If voltage
IS detected, replace the IAC valve for maybe $50; cheap, if you really want to
keep the car.

John...

"Sharon K.Cooke" <scooke@cox.net> wrote in message
news:43E79096.7A3ED52B@cox.net...
> "John..." wrote:
> >
> > Removed the valve to have another look.The plunger moves ok.
> > Must be the solenoid thats not working properly,but seeing as
> > you can't dismantle it,how do I check this?
>
> Check for voltage at the lead going TO the IAC valve connector. If there's
no
> voltage detected, it's probably a bad TPS (throttle position sensor). If
voltage
> IS detected, replace the IAC valve for maybe $50; cheap, if you really
want to
> keep the car.

Since I removed the valve earlier today and moved the plunger up and
down,the car has been ok.Went for a 10 mile drive with no
problems.Maybe it was slightly sticking.

John

Chris Bowne

Well, the IAC is back to its old tricks, gotten steadily more "sticky" since
I tried cleaning it with WD-40 last weekend. Will try a more thogough
cleaning this weekend. Based on the (temporary) improvement right
afterward, I'm encouraged that I'm working on the root cause of the problem,
and its not something else like the TPS or EGR.

Chris Bowne
Stonington, CT
84 Escort 1.9 5 Speed LX 133K
98 Volvo V70XC AWD Cross Country 117K
97 Taurus GL Wagon 133K with sick Vulcan 3.0-otherwise good conditon- for
sale cheap!

SC Tom

"Chris Bowne" <radiobwn@riconnect.com> wrote in message
news:11unoba9at9blbb@corp.supernews.com...
> Well, the IAC is back to its old tricks, gotten steadily more "sticky"
> since
> I tried cleaning it with WD-40 last weekend. Will try a more thogough
> cleaning this weekend. Based on the (temporary) improvement right
> afterward, I'm encouraged that I'm working on the root cause of the
> problem,
> and its not something else like the TPS or EGR.
>
> Chris Bowne
> Stonington, CT
> 84 Escort 1.9 5 Speed LX 133K
> 98 Volvo V70XC AWD Cross Country 117K
> 97 Taurus GL Wagon 133K with sick Vulcan 3.0-otherwise good conditon- for
> sale cheap!
>
>
>

I'd give it up and spend the ~$50 and buy a new one. From what I've read, if
the problem reappears after cleaning, it's time to pitch the old one.

SC Tom

Chris Bowne

Yeah- you are probably right...won't cost much more than a full tank of gas
to buy a new IAC!


> I'd give it up and spend the ~$50 and buy a new one. From what I've read,
if
> the problem reappears after cleaning, it's time to pitch the old one.
>
> SC Tom
>
>