Q: Stalling and surging

asked by on October 24, 2016

Hello, I have a 92 Jeep Cherokee Laredo, I recently have put a used engine inside that has about 70,000 miles on it and been having a problem with the whole vehicle randomly stalling when Accelerating or braking or idling, also it surges randomly. Another problem I have found is that sometimes it doesn't want to take any gas while driving on the highway and I hear a almost clicking sound. I recently replaced the fuel regulator, fuel filter, fuel pump, water pump and dont know if it may be the Mass Airflow Sensor or what. I need some advice on what may fix the problem.

My car has 256000 miles.
My car has an automatic transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Low RPMs
Hi there. This is a common problem for your vehicle. There are many different things that can be effecting your idle rpm. The Idle Air Control Valve for your Vanos needs attention. Vanos is the variable valve timing BMW incorporated...
oxygen sensor
This is correct in that sometimes the Check Engine Light will stay on. A qualified mechanic should be able to reset this after replacing the oxygen sensor (https://www.yourmechanic.com/services/oxygen-sensor-replacement). I would suggest having an expert, like one from YourMechanic, come to...
Car stalls but then restarts once again in about 10 minutes
Hello. Though there are a lot of possible causes of this, the most common is the crankshaft position sensor. These fail all of the time on this engine. Before I change it I would usually scan the computer for codes....
Do I have to remove the radiator to replace my alternator?
Hello. My research indicates that there is more than one procedure for removing the alternator. Some procedures do require removing the radiator to access the alternator, however it appears that it can also be done without removing the radiator, if...
My car jerks when I drive - what is wrong with my car?
Hi there: It really depends on the type of jerking that's occurring with your Chevrolet. If the engine's RPM is surging while the vehicle is in gear, the issues could be caused by a mass air flow sensor (https://www.yourmechanic.com/article/what-does-the-mass-airflow-sensor-do), O2...
Why is there metal shavings in my oil filter but my engine isn't making a noise?
You can send a sample of the oil and/or the foreign material to a laboratory (http://www.amsoil.com/shop/by-product/other-products/oil-analysis-services/) and they will perform an analysis identifying the type of metal which could give you a clue as to location. As far as the...
Transmission problem - electrical problem. 2011 silverado 5.3l
Those are pretty serious codes referring to communications failures between control modules as well as potential failure of the PCM itself (https://www.yourmechanic.com/article/p0606-obd-ii-trouble-code-pcm-processor-fault-by-jamahl-walker). Most electrical failures are wiring related (corrosion, bad grounds, wire break, etc.) and diagnosing this will proceed with...
loud buzzing on driver side while in motion. no dash lights on?
Hello, thank you for writing in. There are several moving parts that can cause a vibration in regards to the air conditioning system. You or a technician will have to go through the components one by one until the vibration...
I hear a loud noise upon start up but it’s only when starting for a few seconds
Among the possible causes of the noise you are describing are a glazed or slipping serpentine (or other drive) belt and a starter motor with a pinion drive gear that is not fully and immediately retracting from the ring gear...

Related articles

2012 Jeep Patriot vs. 2012 Honda CR-V: Which One Should I Buy?
The mid-size SUV is a great vehicle for getting a lot of people from one place to another, with a decent price point and pretty good ongoing fuel economy. While they are never going to get the amazing gas mileage...
How Long Does a Fuel Rail Sensor Last?
The The amount of pressure that is in a car’s fuel system is important and something that is heavily monitored. Without the proper amount of fuel pressure, the gas will not be able to properly circulate. This lack of circulation...
How to Replace a Fuel Pump Relay
The fuel pump has a relay that fails when there is no audible humming sound as the ignition is turned and when the car cranks after longer than usual.