Check engine light

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Old 14 Jun 2006, 11:58 am   #1 (permalink)
howard
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Default Check engine light

My 96 Tacoma CEL light just came on during a heavy rain storm. The code
is P0510 " Closed Throttle Position Switch ". Truck runs fine. Any
suggestions?
Howard
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Old 14 Jun 2006, 03:58 pm   #2 (permalink)
qslim
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Default Re: Check engine light

In article <HeXjg.42585$%m5.19401@trnddc04>,
howard <howeirdnj@verizon.net> wrote:

> My 96 Tacoma CEL light just came on during a heavy rain storm. The code
> is P0510 " Closed Throttle Position Switch ". Truck runs fine. Any
> suggestions?
> Howard


501 refers to the idle contacts in the throttle position sensor, if I
remember correctly. When the throttle plate closes, these contacts close
to tell the computer that the vehicle is idling. Sounds like the
computer is telling you that it is seeing that these idle contacts are
closed all the time, even while driving, so this code has been set. I
saw one of these a few years ago, and if memory serves I traced it to
the throttle position sensor. Shouldn't be too hard for a decent tech to
troubleshoot.

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Old 14 Jun 2006, 04:55 pm   #3 (permalink)
howard
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Default Re: Check engine light

qslim wrote:
> In article <HeXjg.42585$%m5.19401@trnddc04>,
> howard <howeirdnj@verizon.net> wrote:
>
>
>Thanks for the info. I will have it checked.

BTW. is it ok to drive for a while?
Howard
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Old 14 Jun 2006, 06:45 pm   #4 (permalink)
qslim
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Default Re: Check engine light

In article <CB%jg.7582$db5.6615@trnddc03>,
howard <howeirdnj@verizon.net> wrote:

> qslim wrote:
> > In article <HeXjg.42585$%m5.19401@trnddc04>,
> > howard <howeirdnj@verizon.net> wrote:
> >
> >
> >Thanks for the info. I will have it checked.

> BTW. is it ok to drive for a while?
> Howard


Yeah, I doubt you'll have any driveability issues if you haven't
already. The computer is ignoring the input from the TPS, so its fallen
into a default mode where it won't run correctly, but it'll run enough
to get you around. Get it checked sooner than later.

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Old 14 Jun 2006, 07:34 pm   #5 (permalink)
howard
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Default Re: Check engine light

Thanks.

Howard
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