motor cuts out same spot 2700 rpm

[jeff1971]

97 4.0 super cab cuts out in same spot on acceleration.
replaced all the normal stuff map plugs wires coil pack ?? how do i get this fixed

 

[adsm08]

Did it come factory with the manual trans? That sounds like a rev limiter, but it shouldn't be active with the trans in gear and the clutch released.

 

[RonD]

+1 ^^^

All fuel injection computers have a REV Limiter, it is active when speedometer is at 0 MPH, or when transmission is in "Neutral"

In 1997 with an automatic there is a DTR(digital transmission range) sensor on the drivers side of transmission on the shifter
It tells computer what "gear" transmission is in, Park and Neutral setting would have REV limiter active

If you have a manual transmission then a Clutch Pedal switch is used, switch is on the clutch pedal push rod, when pedal is down REV limiter is active, or at 0 MPH

Computer is connected to the VSS(speed sensor) not speedometer, so speedometer could work but computer thinks speed is 0 MPH, but computer will set a P0500 code if its not getting a speed signal


Other causes
Dirty fuel filter, limits fuel flow, so limited RPM
Partially clogged exhaust system, exhaust can't get out so new air/fuel can't come in, so limiter RPMs