XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

Replacing throttle body

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Old Jan 27, 2015 | 05:50 PM
  #1  
DonsXJ8's Avatar
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From: N. California
Default Replacing throttle body

Going to replace my throttle body with a unit I'm getting from the dealer. My question is can anyone tell me if this is plug and play or will the vehicle require a software flash? Thanks in advance to any that apply.
 
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Old Jan 28, 2015 | 01:32 AM
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cjd
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I had no problem. After it's installed, you calibrate it by turning the ignition on without starting the car. Then slowly pump the accelerator pedal to the floor and back up 3 times. Then start the car and you are good to go.
 
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Old Feb 2, 2015 | 05:31 PM
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Installed my new TB today, very basic installation and was done within an hour. I still haven't received my new plug connector, 2 wire for the TB motor, so currently I have the bare pins connected to their correct location/orientation. I should have the new plugs (I ordered 3) tomorrow. I've started the vehicle after doing the simple calibration that cjd outlined in his post, worked perfect and the engine started, went to high idle and slowly came down as it normally would. I let the engine idle after that until the engine temperature reached its normal operating range. I then shut off the engine and restarted it and just a quick blip up to 1100 RPM and within a few seconds it setting down to normal idle speed. So I backed out of the driveway and took a quick spin. Throttle response seemed much better (could just be a placebo effect?) and no warning lights. So hopefully once I install the new wire connector I'll be rid of the dreaded "engine system fault" and DSC/ABS not available warnings. I will also add to all those that are having this problem, given how much less expensive the TB has become, if you think your TB is or has failed, install a new TB. I purchased mine at the dealer for $303.
 
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Old Feb 25, 2015 | 01:43 PM
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From: Austin, TX
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Did the universal Denso pigtail work that you ordered from SouthBay? I need to replace the 2-wire female connector to the throttle body.
 
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