intake air temp module 08 silverado

[rwrlb2]

I need to find the iat mod on my 08 silverado. dealership can't or won't help, can't find an vehicle manual, paperback or cd rom, or online. I bought this litlle...well it looks like a resistor that is supposed to bypass the module and give you better gass mileage and performance. and i don't know where it goes, it is supposed to plug into the female plug for the iat module...can someone help me????

[J-Ri]

Installing a resistor to change the IAT reading won't do much. If it bypasses the sensor, it will be nearly impossible to start the engine when cold. What it probably does is "T" into the signal wire and go to ground, reducing the voltage OR is connected in parallel with the sensor to reduce resistance (increase voltage). That depends on whether it is PTC or NTC (Positive or Negative Temperature Coefficient). If the IAT is higher, the fuel is reduced, but not by much. I don't know exactly what it does, did you try the manufacturer? Something you will want to incorporate is a switch to bypass the resistor so you can start it cold.

[j cAT]

Originally Posted by rwrlb2

I need to find the iat mod on my 08 silverado. dealership can't or won't help, can't find an vehicle manual, paperback or cd rom, or online. I bought this litlle...well it looks like a resistor that is supposed to bypass the module and give you better gass mileage and performance. and i don't know where it goes, it is supposed to plug into the female plug for the iat module...can someone help me????

I'm not sure but i think the maf has iat built into it....................i doubt that this product/idea will do anything but cause problems.

[MT-2500]

Originally Posted by rwrlb2

I need to find the iat mod on my 08 silverado. dealership can't or won't help, can't find an vehicle manual, paperback or cd rom, or online. I bought this litlle...well it looks like a resistor that is supposed to bypass the module and give you better gass mileage and performance. and i don't know where it goes, it is supposed to plug into the female plug for the iat module...can someone help me????

Welcome to AF
You will void your warranty messing with it.
And mess up the engine and cats .
If it is one of the cold air intake air deals drop it in the trash can.
Ity is not going to help anything anyway.
MT

[rwrlb2]

thanks, I guess I'll just quit being cheap and buy the programmer for it... I just hate to spend the 450 for 2-5 mpg. at that rate it will take 3-4 years, but I will recoop my investment.

[rwrlb2]

ok thanks

[MT-2500]

Originally Posted by rwrlb2

thanks, I guess I'll just quit being cheap and buy the programmer for it... I just hate to spend the 450 for 2-5 mpg. at that rate it will take 3-4 years, but I will recoop my investment.

You will still blow your warranty.

And risk a lot more.
Read this.

http://www.epa.gov/air/caa/title2.html#iia

http://www.epa.gov/air/caa/


http://www.epa.gov/air/caa/caa203.txt


Sec. 203. (a) The following acts and the causing thereof are
prohibited-
(1) in the case of a manufacturer of new motor vehicles or
new motor vehicle engines for distribution in commerce, the
sale, or the offering for sale, or the introduction, or
delivery for introduction, into commerce, or (in the case of
any person, except as provided by regulation of the Adminis-
trator), the importation into the United States, of any new
motor vehicle or new motor vehicle engine, manufactured
after the effective date of regulations under this part
which are applicable to such vehicle or engine unless such
vehicle or engine is covered by a certificate of conformity
issued (and in effect) under regulations prescribed under
this part or part C in the case of clean-fuel vehicles
(except as provided in subsection (b));
(2)(A) for any person to fail or refuse to permit access
to or copying of records or to fail to make reports or
provide information required under section 208;
(B) for any person to fail or refuse to permit entry,
testing or inspection authorized under section 206(c) or
section 208;
(C) for any person to fail or refuse to perform tests, or
have tests performed as required under section 208;
(D) for any manufacturer to fail to make information
available as provided by regulation under section 202(m)(5);
(3)(A) for any person to remove or render inoperative any
device or element of design installed on or in a motor
vehicle or motor vehicle engine in compliance with regula-
tions under this title prior to its sale and delivery to the
ultimate purchaser, or for any person knowingly to remove or
render inoperative any such device or element of design
after such sale and delivery to the ultimate purchaser; or
(B) for any person to manufacture or sell, or offer to
sell, or install, any part or component intended for use
with, or as part of, any motor vehicle or motor vehicle
engine, where a principal effect of the part or component is
to bypass, defeat, or render inoperative any device or
element of design installed on or in a motor vehicle or
motor vehicle engine in compliance with regulations under
this title, and where the person knows or should know that
such part or component is being offered for sale or
installed for such use or put to such use; or
(4) for any manufacturer of a new motor vehicle or new
motor vehicle engine subject to standards prescribed under
section 202 or Part C-
(A) to sell or lease any such vehicle or engine
unless such manufacturer has complied with (i) the
requirements of section 207 (a) and (b) with respect to
such vehicle or engine, and unless a label or tag is
affixed to such vehicle or engine in accordance with
section 207(c)(3), or (ii) the corresponding
requirements of part C in the case of clean fuel
vehicles unless the manufacturer has complied with the
corresponding requirements of part C
(B) to fail or refuse to comply with the requirements
of section 207 (c) or (e), or the corresponding
requirements of part C in the case of clean fuel
vehicles
(C) except as provided in subsection (c)(3) of
section 207 and the corresponding requirements of part
C in the case of clean fuel vehicles, to provide
directly or indirectly in any communication to the
ultimate purchaser or any subsequent purchaser that the
coverage of any warranty under this Act is conditioned
upon use of any part, component, or system manufactured
by such manufacturer or any person acting for such
manufacturer or under his control, or conditioned upon
service performed by any such person, or
(D) to fail or refuse to comply with the terms and
conditions of the warranty under section 207 (a) or (b)
or the corresponding requirements of part C in the case
of clean fuel vehicles with respect to any vehicle; or
(5) for any person to violate section 218, 219, or part C
of this title or any regulations under section 218, 219, or
part C.
No action with respect to any element of design referred to in
paragraph (3) (including any adjustment or alteration of such
element) shall be treated as a prohibited act under such
paragraph (3) if such action is in accordance with section 215.
Nothing in paragraph (3) shall be construed to require the use
ofmanufacturer parts in maintaining or repairing any motor
vehicle or motor vehicle engine. For the purposes of the
preceding sentence, the term "manufacturer parts" means, with
respect to a motor vehicle engine, parts produced or sold by the
manufacturer of the motor vehicle or motor vehicle engine. No
action with respect to any device or element of design referred
to in paragraph (3) shall be treated as a prohibited act under
that paragraph if (i) the action is for the purpose of repair or
replacement of the device or element, or is a necessary and
temporary procedure to repair or replace any other item and the
device or element is replaced upon completion of the procedure,
and (ii) such action thereafter results in the proper functioning
of the device or element referred to in paragraph (3). No action
with respect to any device or element of design referred to in
paragraph (3) shall be treated as a prohibited act under that
paragraph if the action is for the purpose of a conversion of a
motor vehicle for use of a clean alternative fuel (as defined in
this title) and if such vehicle complies with the applicable
standard under section 202 when operating on such fuel, and if in
the case of a clean alternative fuel vehicle (as defined by rule
by the Administrator), the device or element is replaced upon
completion of the conversion procedure and such action results in
proper functioning of the device or element when the motor
vehicle operates on conventional fuel.
(b)(1) The Administrator may exempt any new motor vehicle or
new motor vehicle engine from subsection (a), upon such terms and
conditions as he may find necessary for the purpose of research,
investigations, studies, demonstrations, or training, or for
reasons of national security.
(2) A new motor vehicle or new motor vehicle engine offered for
importation or imported by any person in violation of subsection
(a) shall be refused admission into the United States, but the
Secretary of the Treasury and the Administrator may, by joint
regulation, provide for deferring final determination as to
admission and authorizing the delivery of such a motor vehicle or
engine offered for import to the owner or consignee thereof upon
such terms and conditions (including the furnishing of a bond) as
may appear to them appropriate to insure that any such motor
vehicle or engine will be brought into conformity with the
standards, requirements, and limitations applicable to it under
this part. The Secretary of the Treasury shall, if a motor
vehicle or engine is finally refused admission under this
paragraph, cause disposition thereof in accordance with the
customs laws unless it is exported, under regulations prescribed
by such Secretary, within ninety days of the date of notice of
such refusal or such additional time as may be permitted pursuant
to such regulations, except that disposition in accordance with
the customs laws may
not be made in such manner as may result, directly or indirectly,
in the sale, to the ultimate consumer, of a new motor vehicle or
new motor vehicle engine that fails to comply with applicable
standards of the Administrator under this part.
(3) A new motor vehicle or new motor vehicle engine intended
solely for export, and so labeled or tagged on the outside of the
container and on the vehicle or engine itself, shall be subject
to the provisions of subsection (a), except that if the country
which is to receive such vehicle or engine has emission standards
which differ from the standards prescribed under section 202,
then such vehicle or engine shall comply with the standards of
such country which is to receive such vehicle or engine.
[42 U.S.C. 7522]


http://www.epa.gov/air/caa/caa205.txt