Rough idle stalls at low rpm's

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CNETJun 11, 2015 - My jeep grand cherokee 1996 has started stalling when at lights, stop signs, in park or ... It starts and drives but after stoping at the stores and parking when I came out I ... Mechanic changed already crank sensor, distributer pick up, fuel pump, idle .... Symptoms like the Jeep running fine, then stalling without warning usually ... 97 Jeep Grand Cherokee Laredo keep dying upon ignition
Jun 11, 2015
1996 Jeep Grand Cherokee just stopped while driving.
Jun 10, 2015
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This what I think is happening. Your engine is running rich because the ECM thinks it has too much air and so injects more fuel. When you now introduce air, by taking th e vacuum line off, the fuel mixture is now more balanced. Have you cleaned your MAF sensor? Also make sure your engine coolant is full.

Check your idle air control valve. Sounds as though it may be the problem. The other item could be the TPS, but I doubt it because it would idle poorly all the time even after warming up.

check intake manifold air temp sensor and engine coolant sensor...one may be out of range but not enough to turn on dash light. tests and specs can be found in chiltons or haynes, test is done with digital multi-meter.

Most of the time an engine is supposed to idle at 5-600 RPM in Driveif it's not you can up the idle. But you also may have a vaccume leak.

check for air leak in the air intake.

fuel filter or throttle positionong sensor

Sounds like a crank sensor.

hello first check your idle with the car running foot on brake see were your rpm reading is if your below 500rpm check your label underhood for your curb idle setting second see if theres a adjustment screw you can increase were your gas cable lever rest against your set screw underhood if you feel confident enough remove your iac motor idle air control valve if the bore were the end of the pintle extracts out to close has varnish builup our carbon it will stick creating vacuum leak type senario causing stalling rough idle sometimes even no start conditions good luck

This happened to me recently on my 2004 Grand Cherokee. It stalled out three times in a month. No one came up with any codes except that my throttle sensor needed to be replaced ($80). After it was replaced, it stalled two more times, but this time the check engine light never came back on. My local Jeep mechanic looked it over for around six hours and could not find anything. However, my amps on my battery was half of what it should be. He stated that the computer may not have enough juice to control the throttle idle that activates when the vehicle is in low idle speeds. He also stated that once you remove the old battery to touch the battery cable terminals together (you can use a wrench if terminals won't touch) for around ten seconds. This is supposed to drain any remaning juice from the jeep and is supposed to reset the idle memory and computer for the vehicle. After replacing the battery, crank the Jeep up and let it run for at least five minutes without ever touching the gas pedal. Leave it to idle and I repeat, do not touch the gas during this time. The mechanic stated that letting the vehicle run for at least five minutes without touching the gas pedal will set the computer for the Jeep to run efficiently with the new battery and will also set the idle memory for the jeep. I did so and you could actually see the RPM's going up and down until the Jeep found an efficient idle setting. Try that, I know it sounds simple, but I tried every else before this, and it has not stalled out since a couple of weeks ago. I'll write back if it does before the end of next month. Hope this helps.