Intermittent cut off for a split second

Engine harnesses?

 

Do your dash lights go on and off when it does this, like you turned the key?

 

Check for a ground wire

 

Assuming the gear shift/indicator is on a stalk, check that harness. Especially check where it passes through the floor, the swivel down by the seat base, and where it goes into the control head. It is most likely chafed at one of those points.

 

check your fuses; road vibration may of back one off slightly to create this affect. (been there, found that)

 

I had a problem like that . Found a lose wire to terminal connection at the starter.it would come and go

 

Check the small wires going to the battery terminals. 2 positive and 2 negative. They are for the engine ECM and trans ECU. Wiggle them around. Even if they look good, the ring terminal may be broken under the insulation and you won't see the break unless you cut the insulation open, but it will feel loose even if the battery nut is tight. Also the trans harness under the floor mat in front of the driver's seat could be corroded (common problem).

 

Closer to an 96 than an 06 but I went to one that have been doing that and shut down. It would spin over with the starter but not start. A test light would light between the engine and the frame. Could not find a ground wire between them. It had been grounding through the engine mounts, drive line, etc. for 400,000 miles.