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Kickdown, turbo, and other questions S60 2005

posted by  KlausC on  Fri Mar 30 13:50 CST 2012
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last visit: Fri Oct 24 10:15 CST 2014
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No more cables, just computers and sensors. The pedal position sensor lets the ECU know that you just floored it. The throttle position sensor also knows the pedal position sensor was maxed, so the TPS increases the air flow. The ECU increases the injector time for more gas in the cylinder. The ECU also sees the speed and gearing and tells the TCU to down shift if appropriate, and how many gears.

Your car didn't down shift, but appears that everything else was done, flooding the cylinders with gasoline and making it go slower.

Check if your car needs any TCU upgrades, there are a few for 2005. Also check the condition of the spark plugs - just for fun.

A trip to the local Volvo dealer for a used car inspection costs around $100. Beware, they will find a bunch of stuff 'wrong', but that is just for drumming up business! They will charge extra for downloading TCU software, maybe.

Klaus
--
Volvos should be saved from the junk yards, not donated.






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New Kickdown, turbo, and other questions [S60][2005]
posted by  Taxlady  on Fri Mar 30 12:22 CST 2012 >


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