Quote:
Originally Posted by Datka
Weak fuel pump?
You may be onto something. Every 3 or 4 weeks i have been adding 1/2 liter of coolant/distilled water since December.
I did replace my water pump 3 years ago. It gave up and left me stranded on my way to work. The day before I was at LRP where I had to cut my track day short due to the limp mode...
Loss of power does not happen on the track in a cool temp., like 70F or less.
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you need to log before you jump to any conclusions... maybe it's your tune... you might need your tuner to bump rail pressure up (if it's actually dipping too low). If you are JB4 only then you'll have a harder time fixing fueling problems. Log misfires. If rail pressure is dipping too low it will manifest itself in the dme shutting down individual cylinders (which will log as misfires).
Log coolant and oil temps... dme starts pulling power at:
These measures are divided over two operating modes:
• Component protection
- Coolant temperature between 117°C/242°F and 124°C/255°F
- Engine oil temperature between 150°C/300°F and 157°C/314°F
- Result: The output of the air conditioning system
(up to 100%) and of the engine is reduced
• Emergency
- Coolant temperature between 125°C/257°F and 129°C/264°F
- Engine oil temperature between 158°C/316°F and 163°C/325°F
- Result: The power output of the engine is reduced
(up to 90%)
see pdf here:
http://www.1addicts.com/forums/attac...8&d=1317333814