engine quits at stop and....

[twojeeps]

please advise.... don't drive the MJ much, but today I did more than usual.

 

Driving along in 4th gear, occasionally the RPMs would drop then jump back to normal??? Then, when I slowed down and came to a complete stop, the engine would quit(this would happen almost everytime I stopped)??

 

It is a 1990, 4.0, 2wd, 5 speed.

 

Thanks in advance for any help. I did search some, but did not see anything specific.

[JeepcoMJ]

please advise.... don't drive the MJ much, but today I did more than usual.

 

Driving along in 4th gear, occasionally the RPMs would drop then jump back to normal??? Then, when I slowed down and came to a complete stop, the engine would quit(this would happen almost everytime I stopped)??

 

It is a 1990, 4.0, 2wd, 5 speed.

 

Thanks in advance for any help. I did search some, but did not see anything specific.

 

any number of sensor problems could be it.

 

personally, I am thinking poor connection to the coil, or dirty CPS. also, throttle position sensor or MAP sensor problems are potential.

[Wildman]

How fresh is the gas???

 

Alot of sitting, and in Florida.......I would guest that you collected condensation in the tank, try some Gas Stabilizer and some Dry Gas in the tank now, and add some fresh gas.

 

Try this first before you start changing sensors, and see how it runs.