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  1. 04-29-2007, 10:52 PM #1
    Jack Evers's Avatar
    Jack Evers
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    Engine Malfunction Code

    Had a nice time at the Havana Cafe. Great to meet some of you guys that I missed at G.A.M.E.

    Sorry to bother you guys with questions about the Engine Malfunction Code my car is displaying. When I got home I checked the forum and came up with the correct key dance sequence. Turn to "on" position, then to "ACC" position, back on "on" rapidly three or four times quickly.

    I came up with a P0128 code which is "Thermostat Rationality." It has to do with the 170 degree stat I installed. Tomorrow, out comes the 170 and in goes a 180 or 190 degree replacement. We'll see if that does it.
    Last edited by Jack Evers; 04-29-2007 at 11:13 PM.
    Jack Evers
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  2. 04-29-2007, 11:12 PM #2
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    GasGunR
    GasGunR is offline 2006 Mag SRT Owner
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    Or let it warm up a bit before you take off... that seems to work with mine so far.
    2006 MSRT8 in Brilliant Black, Options I,II,III, Sunroof and Sideairbags, Free Auto On Headlight Mod, Headlights on wth wipers, Highbeams on with Fog Lights, Hacked Nav, MOPAR Remote Start, BLACKEND I-Pass, Tailgate Plugs, 20% Tint Side Front Windows, Smoke LED Tailights, Airhammer CAI, Kooks LoKo Coated headers, Hi-Flow Cats, JBA 3" Cat Back, eibach sways. Fri Ported Intake, Fri Street Heads, Fri Littleboy Cam, P.I. 2800 Stall Converter, Custom Autometer 5 gauge over the visor pod, B.T. 65 Standard Hurst Shift conversion, TommyZ Hood S.N. 2. 180 degree T-Stat, BT Ported TB.
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  3. 04-29-2007, 11:24 PM #3
    Jack Evers's Avatar
    Jack Evers
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    Quote Originally Posted by GasGunR View Post
    Or let it warm up a bit before you take off... that seems to work with mine so far.
    I don't sit in my driveway until the coolant temperture is 180 degrees but I do warm it up some.

    Both times I've had this light, the ambient temperature has been pretty warm. Today it was 95 degrees. The system takes ambient temperature into consideration and after 10 minutes of driving, it was saying to itself:

    "Hey, it's ninety five degrees out, this idiot has been driving for 10 minutes now and I should be at 180+ degrees, but I'm not. Better throw a light"

    I have to conclude that the hotter it is outside (higher ambient temperature) the quicker and more often we'll be getting the P0128 code.
    Last edited by Jack Evers; 04-29-2007 at 11:28 PM.
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  4. 04-30-2007, 12:30 AM #4
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    GasGunR
    GasGunR is offline 2006 Mag SRT Owner
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    Glad I don't live in Gila Bend then anymore

    Hope you get it corrected!

    Don
    2006 MSRT8 in Brilliant Black, Options I,II,III, Sunroof and Sideairbags, Free Auto On Headlight Mod, Headlights on wth wipers, Highbeams on with Fog Lights, Hacked Nav, MOPAR Remote Start, BLACKEND I-Pass, Tailgate Plugs, 20% Tint Side Front Windows, Smoke LED Tailights, Airhammer CAI, Kooks LoKo Coated headers, Hi-Flow Cats, JBA 3" Cat Back, eibach sways. Fri Ported Intake, Fri Street Heads, Fri Littleboy Cam, P.I. 2800 Stall Converter, Custom Autometer 5 gauge over the visor pod, B.T. 65 Standard Hurst Shift conversion, TommyZ Hood S.N. 2. 180 degree T-Stat, BT Ported TB.
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  5. 04-30-2007, 12:34 AM #5
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    carchitect
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    Quote Originally Posted by Jack Evers View Post
    I came up with a P0128 code which is "Thermostat Rationality."
    Sounds like you need to talk some sense into it...

    Sounds like she may not be heating up enough, the 180 or 190 t-stat should do you good.
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  6. 04-30-2007, 04:08 AM #6
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    Quote Originally Posted by GasGunR View Post
    Glad I don't live in Gila Bend then anymore

    Don
    Doncha miss it even a little?

    Joe B Glendale, AZ
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  7. 04-30-2007, 02:55 PM #7
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    ICLOSEM
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    i just installed mine on saturday and havent had a problem yet i figured we are in az the cooler the better.. glad to hear you got it figured out
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