Hello Scotty,
This is Gerardo owning a 1999 Acura Integra LS 4-speed Automatic. I had checked and replaced the fuel pump and downstream oxygen sensor to hopefully have the car run safely but it would still stop running (engine turns off) while driving. The speedometer also doesn’t record the actual speed of the vehicle properly. It is currently at a shop and the technician is still having trouble diagnosing the cause of the car trouble. What else could be the cause of this issue? My best guess would be the ignition switch or distributor.
Best Regards,
Gerardo G
Could be an ignition switch (I've had that happen) or it could be a sensor like the crankshaft sensor failing when it gets hot, or a module. (Electronics don't like heat.) Does it start up again right away after this happens or do you need to wait for the engine to cool down? Does the shop have a high-end scan tool that can search for manufacturer-specific codes and diagnose all the modules?
Sometimes it would start right up, sometimes it would turn right up or stall to turn back up.
Intermittent problems are tough to diagnose. Has the shop found any codes? Do they have a scan tool that can probe all the car's modules?
When I experienced a similar problem a few years ago it did turn out to be the ignition switch but that doesn't mean yours is going to be the same.
It turned out to be the distributor, they will do further testing to ensure it will be solved. If not, it could be the wiring.
Come to think of it I had another car years ago that would intermittently stop dead. Turned out it was the wiring to the distributor, a bad connector. Hope they found the problem, as I said intermittent problems can be a real bear to track down.
It's either fuel, air or spark. You have fuel and air. Must be electrical. Follow Chock's advice here.
Sorry, Chuck
I am not sure. I’m going to call and see.