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WK1 Troubleshooting / Problems Discussion / Dealer Service If you are having some problems with your Jeep Grand Cherokee SRT8 and need assistance in troubleshooting and diagnosing the problem, this is the proper place to discuss it. Were you treated fairly or poorly at a dealer? Warranty issues? Let us know.

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  #41  
Old 05-28-2007, 12:07 AM
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Quote:
Originally Posted by FastSRT8GC
Maybe me??? We will see in a week or so!!
FAST...we are trying to be patient.
I'd bust your chops on the delays, but, I have enough delays of my own!
Bill
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  #42  
Old 05-28-2007, 07:08 PM
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Anybody know what these screens indicate??????????

I do......










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  #43  
Old 05-28-2007, 07:29 PM
bruso bruso is offline
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Jeff...you are such a tease!!
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  #44  
Old 05-28-2007, 09:58 PM
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Quote:
Originally Posted by Blown7
Anybody know what these screens indicate??????????

I do......


My guess would be the throttle position between the 1-2 and 2-3 shift?
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  #45  
Old 05-28-2007, 11:53 PM
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ok Jeff...how much for one of these toys?
Looks like a must have.
Bill
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  #46  
Old 05-29-2007, 12:56 PM
rainmaker rainmaker is offline
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Accelerator Pedal Position

Throttle Position Sensor

Interesting that the blade is only open 76% in that one screen shot. Were you @ WOT when you took that?
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  #47  
Old 05-29-2007, 05:33 PM
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Quote:
Originally Posted by Blown7
Anybody know what these screens indicate??????????

I do......












This is just one of many self testing modes the StMo will do in the vehicle.
This shot was taken, engine stopped, key on. The PCM will not allow the throttle plate to go to 100 percent in a static mode. I will have to get a running percentage "Flight Recorder Mode" to verify throttle position at WOT but I doubt the PCM torque control (or any other aftermarket flash) will ever allow the throttle to go to 100 percent due to the factory "derating" these engines.

Close sources to me tell me they have seen these engiines produce 415 RWH in the Jeep STOCK in Detroit. Using that baseline the 6.1 should make around 500 Flywheel horsepower.


Jeff



Jeff
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  #48  
Old 05-29-2007, 05:35 PM
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Quote:
Originally Posted by BuilderBill
ok Jeff...how much for one of these toys?
Looks like a must have.
Bill
Around $ 2600.00. I ordered a few extra goodies.
IMHO you just cannot check the parameters of the Engine and the whole vehicle without one.
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  #49  
Old 05-30-2007, 09:15 AM
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Garage
Wow, just wow.
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'06 Silver GC SRT-8 (Borla Type-S, Predator, K&N, Eibachs, S6M Shocks, JeepinByAl A-arms, 275/315 Bridgestones)
'06 White E55 (STAR dropped over some iForged with a Eurocharge tune)
'94 Black Mustang GT (intake, exhaust and everything in between....except for heads & cam)
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  #50  
Old 06-03-2007, 04:47 PM
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Well seems today is a good day to update with Inferno running amuck

This is the "Brain of the PCM" it is a Freescale MPC5554MZP80 processor.
This is my best guess where your B&G Flash goes.
It does not hold the really important info we need to modify to tune
it just runs the PCM and orders commands.




Unlike this Monolithic IC which is a Freescale 95320WQ EEPROM 32
bit w/ SPI bus this
is where all the "real tuning" tables are stored.



Yes the board is about 25 percent identified.

In several weeks I may have enough Nodes and have power to the bench setup.
Then a real conversation with me and it can begin.




Jeff
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