A couple years ago, my daughter's '87 Integra with about 150K miles, but
running fine, failed the idle "gates" while marginally passing the 2500 RPM
specs. The first shop estimated about $1000 to replace the O2 sensor and
factory replacement cat. She then took the car to a smog-check-only shop.
The shop owner said that a new O2 sensor might, and/or a new cat, for sure,
would make the car pass (at a total cost of about $400) and probably run a
little more economically (due to the O2 sensor). However, he suggested that
before doing any repairs she make an appointment, bring the car in hot after
running it down the freeway for a few miles, and he'd put it right on the
machine. With that strategy, it didn't pass idle but was considerably
cleaner than it had been when the first test was performed on a
not-warmed-up engine. With only a change of the O2 sensor, and another
warm-up cycle, the car passed. Nice to find a shop like that and, he only
charged for the one-time test, in addition to the reasonably priced O2
replacement. The shop is:
Tri Valley Car Care
1737 first Street
Livermore
925-443-7474
----------
>From: Scot Zediker <mx5_1991@yahoo.com>
>To: Darren Madams <darren@madams.com>, ba-autox@autox.team.net
>Subject: Re: Smog Check Question
>Date: Tue, Feb 1, 2000, 12:29 PM
>
>It might be running a bit rich. Try adjusting the
>mixture (if you can) and also check the O2 sensor. I
>had the latter go on my Z and it ran really dirty
>until I had it replaced.
>
>Scot
>
>--- Darren Madams <darren@madams.com> wrote:
>> On a Honda, what would cause a slightly higer
>> reading of Hydro Carbons
>> (HC) at idle if it's fine at 2500? ANd CO were fine
>> at both? And all
>> other systems are fine...
>>
>> --D
>>
>>
>Do You Yahoo!?
>
|