I am completely befuddled over what my jeep is now doing. The road to my house is very bumpy. When I drive my jeep to go into town I hit these bumps but they are not even really hard. When I step on my brakes to get onto the main road my engine stalls! It happens every time I go on rough road and step on the brake. I can drive on blacktop all day but that just is not fun.

-The jeep idles at around 750.
-When it is about to stall it idles at 100 for a few seconds before it shuts down.
-Engine does not idle rough at all even when it is about to stall.
-Has new alternator, battery,dist cap, dist rotor, plugs, wires, dist sensor(underneath distributor), and crank positioning sensor.

 

Try this

http://www.jeepforum.com/forum/f12/s...-bumps-107060/

 

Check for loose connections at the ECM maybe. Could also be an idle air control motor failing. Try jiggling the wire harness and plugs to the sensors and actuators while the engine is idling and see if the RPMs change while doing this jiggle test.

 

Someone said it was the trigger on my fly wheel. Where is that and why is it important?

 

They're talking about the crank sensor.

 

check the ground strap running from the valve cover to the firewall, mine was rubbing against the injector wiring harness when i would go over bumpy roads, causing it to stall out. and water made it happen more frequently.

mine would sometimes stall out exactly like u described, although usually it would just cut right off as if i flipped the key. took me forever and a day to find the problem!

 

if u dont find anything, idle the engine and shake the hell out of the pcm, and all your wiring and connectors.

if it doesnt stall, shake everything harder until it does stall.