Car keeps cutting off and stalling?

My car will take a while to pick up speed some times. And the car will cut off but it will start back up after a few minutes. What can be the problems?

Car will stall while driving, engine light not on, will re-start after several attempts, after I turn key and get nothing it always starts on next try? Cleaned ECM connections, throttle act control module connections, new battery (connections good). Cleaned throttle body, ran scan after it stalled, p0601, p0606, and u0107? I read the codes but, I know what they mean but I do not know where to go from here. Took it to two mechanics both said it would not give them any codes Cost me money for nothing. I would highly appreciate any help I can get, Thanks!

I completely removed the PCM and cleaned the connections with electrical cleaner. My problem is I can not afford to take my car to a garage and just give them a blank check. I know what the codes are, I am attempting to narrow it down by checking one thing at a time. Do I replace the PCM? Is that the issue? What made it go bad? When I purchased the car it only had 38,000 miles and is still under 75,000 and I always keep in garage. What do you suggest?

No, I have not. In the past I replaced a few starters, alternator, brake pads, etc. I have zero experience with electrical issues in fact a few weeks ago was the first time I even held a scan tool and it was borrowed from a friend and it was a very inexpensive one. (Although it did pull up those codes I gave you.) Want I need is some educated guesses, some people say it might be a crankshaft position sensor, mass air flow sensor, fuel actuator sensor, bad PCM, and on and on! I am very poor and I don't have the cash to have a mechanic just start replacing parts. So far I mentioned what I did but I am going to try to explain exactly what it is doing : 1) It stalls, mostly when low idle. 2) Turn key several times but just cranks. 3) When I turn key and get nothing, no click, no sound, it always starts on next turn of key? I understand mechanics don't like to guess, please make acception.

I had a used PCM installed it fixed it!

At highway speeds and at low speeds, the engine stops running with no warning. STARTING DISABLED warning message shows up on driver information center. The car was hooked up to a computer at a dealer and nothing was found wrong. We tried fixing the problem after we found a TSB 05-06-04-037 which recommended cleaning the negative battery cable. This did not solve the problem.

Thank you for the reply.I will take it to a dealer(prob lem is I am in Mexico so I hope they get the same PSB)On another forum, someone suggested that fuse#15 might need to be replaced. Fuse somehow loses connection after car is warm. Any thoughts?

Forgot to add that we did clean the connection at the frame rail.

Thanks for the reply.I am in Mexico and language will be a problem. Is reflashing the PCM a common occurrence? Anything, I should try to make clear?Would the TSB number be the same regardless of whether it was the U.S, Canada, or Mexico.

Engine Performance problem
2005 Buick La Crosse 6 cyl Front Wheel Drive Automatic

when I start my buick lacrosse I notice that the RPM needle is rev low, like its about cut off. I use engine restore and fuel injector clean my car is at 85,000 miles should I get a tune up because I talk to people at auto stores and they told me that theres not a replacment part for the fuel fliter?

Thanks for the answers. Took vehicle back to the dealership. They did exactly what you suggested and vehicle no longer stops running thanks