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Re: [T3] poor emissions update


On 8/28/02 5:54 PM, "cesaro suma" <cesarosumability@hotmail.com> wrote:

> as of right 7:00 (i got home from work driving her at 5:00) head temp sensor
> reads 940 ohm. the air manifold temp sensor reads 145 ohm. everyting is a
> little warm still so i plan on checking around 10:00 when its cooled down
> some. the book says the head sensor should read about 2500 ohm. but at what
> temp? how can i know what ohm i'm getting is good?

Your temp sensors are probably fine, but you should at least verify the cold
temp readings.  2500 ohm for the head temp sensor would be about right for
room temperature (~70F).  At operating temperature, the resistance decreases
to about 1000 ohm +/- a couple hundred ohm.  Your 940 reading might be a tad
low, but it is probably close enough.

The air temp sensor should measure about an order of magnitude lower than
the head temp sensor (~300 +/- 50 ohm at 70F and ~100 to 150 ohm at temp).

Measure that fuel pressure.  Do you have a cold-start injector?  What kind
of fuel economy do you get?

-Mark Fuhriman


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