My car keeps stalling though starts up immediately

Same thing happens to my 2000 Infiniti QX4, my mechanic also quoted me the same amount.

I had this same exact problem and similar experience where my car would stall out whenever I came to a lights or have to stop @ rest for periods @ a time. And it would happen sporadically but progressively get worse. I don't know if this happened to y'all, but my check engine light would only come on when the problem was actually occurring, so the auto repair place had a hard time locating the problem bc they couldn't hook it up to the diagnostic so that the car could tell exactly what was was. Well it finally messed up one day @ the shop in front of the mechanic and it turns out their was a blockage causing all the gas or only a little to flow out through the gas pipe (I'm guessing on the part name), is that the same problem as what your diagnostic was? I'm just about to get this car and I'm really nervous

I had an issue with my Infiniti qx4 1999 using rpm. It would shake violently and eventually not even start at all. We were unable to jump start it. It turned out to be a bad distributor. The distributor cap was replaced as well. Haven't had any issues since. Not sure if this will help, I just always hate how no one returns once they have a solution.

My 1999 qx4 was fine at first then the first problem came when the breaks got stiff to press and when i would get to a stop i had to let go of the breaks or it would stutter & possibly stall out now it starts then stalls out. I'm not a mechanic or anything but from what I've researched there's a couple things that it could be, 1(electrical) spark plugs or distributor. 2(oxygen) air filter or intake manifold oxygen sensors. 3(fuel) fuel filter or fuel pump. For better performance I would highly recommend to add a complete fuel system cleaner in the gas tank.

Hey will they stop running if low on oil