[jj0924]

2005 titan flex fuel 4x4
when going down the road 50 to 75
I will get a big jurk in the truck when this happens the rpms take a quick drop
noticed it does it more if I run 87 octane gas and less on 91
without ethanol
ideas on what it might be
243000 miles

 

[NRA_guy]

Make SURE you are not touching the brake pedal with your left foot.

A slight depressing of the brake pedal will cut your engine RPM.

It's a "design feature" intended to prevent those alleged runaway vehicles that folks claim they cannot stop.

 

[jj0924]

good idea
but it will do it with the cruise on also