Search found 32 matches

by festy
Thu Sep 13, 2012 1:11 pm
Forum: Performance
Topic: JK 24v 3liter ..at last!
Replies: 197
Views: 100712

Re: JK 24v 3liter ..at last!

I can't find much information on the LDA line, but it's function seems to be related to limiting engine braking on decelleration, to prevent the rear wheels locking up. The signal would either be a digital on/off (i.e. the ABS ECU would pull the pin high or low) or a PWM signal to request an amount ...
by festy
Wed Sep 12, 2012 8:33 pm
Forum: Performance
Topic: JK 24v 3liter ..at last!
Replies: 197
Views: 100712

Re: JK 24v 3liter ..at last!

</de-lurk> The older Motronics use a CTS vs RPM map to determine decel fuel cut in/out points - even though the ECUs have a pin for a speed sensor input, it's not used. The 164Q4 ECU is a lot more complex - it works with the ABS system to prevent decel fuel cut in specific circumstances. My guess is...