Your tach going to zero while the car is still moving in gear means your engine is still turning, yet your tach, and so your computer says it is not. Replaced ignition switch to correct. My first guess would be that crank shaft sensor thingy. The contact owns a 1997 Buick Regal. However in short, she is 1997 only by title, meaning only thing left that is 1997 on her is her body and brake system, everything else is converted to 2001 and up. Production and sales in have continued since 1999. As the upmarket version, the Regal offered larger engines and fancier trim, and once again boasted a newer version of the 3.
Most obvious was the light silver gray firemist paint added to each side. Approximately ten minutes later, the vehicle was able to be restarted and operated normally. Used to be a magnaflow. It offered 5-passenger seating on all trim levels like the Pontiac Grand Prix and Oldsmobile Intrigue formerly Cutlass Supreme , unlike their predecessors that had optional 6-passenger seating and the Buick Century formerly built on the which had standard 6-passenger seating. The distance seems to be further when it's cooler outside.
Hard to diagnose problem per mechanic. The contact stated that the vehicle caught on fire. I have researched similiar problems on the internet and found several forums of owners experiencing the same type of electrical problems with late 90's model Regals. The rear spoiler was only available as a dealer installed option. The failure continued after the repair.
The eAssist system adds up to 15 hp 11 kW to the standard 2. I have also found similar problem on Riviera section. The contact was concerned of the safety risk involved. Since it has gotten colder down here the problem has almost gone away, but I'm sure as soon as it warms up again it'll be back. Problem is now I really dont know what to think. I bought it used from a dealer in may of this year. I have researched similar problems on the internet and found several forums of owners experiencing the same type of electrical problems with late 90's model Regals.
Hope this helps you on your quest. They have complained of the same symptoms and having their vehicle serviced several times for not starting within a matter of months. I don't recall the location of the unit, if I were at my shop right now I'd look it up for you. No one even thinks twice when they see a 4 door square box sedan pull up to them at a light. The warning light continued to remain illuminated when the vehicle was operative. I have determined that there is no ignition at this time and thought the ignition module maybe was getting too hot to operate so I tried soaking a sponge in cold water and putting it on the bottom of the module and cooling it down to see if that would help. If the engine stays running on the carb cleaner try disconnecting the mass air flow sensor and see if the engine continues to run by itself.
The Regal coupe was discontinued. MotorTrend Magazine, Source Interlink Media. Said without any codes they dont know what is wrong and need problem to happen while in their possession. Initially, a three-speed was standard but this was later replaced by an automatic. Hope this helps, if not, let me know. This generation Regal lasted ten years. Apparently the crank sensor was cracked and losing contact intermittently.
I emailed buick, asking for help. Had to have it towed later to find out it is the ignition switch now car is sitting will not start all lights flash will not crank or turn over. They have complained of the same symptoms and having their vehicle serviced several times for not starting within a matter of months. We tried the crankshaft wiggle thingy posted on here and it wouldn't stall. The Regal Sport Coupe also included a firm suspension with larger tires and sport wheels.
Consumer stated dealership is now closed and will be taking it to a repair shop. He said the mechanic should have caught it as it was a common problem. This last time it is presently in the shop while they are trying to figure out where the electrical problem is. Its that, turn signal short or computer. There exist also some interior and exterior differences between the American and Chinese models. MotorTrend Magazine, Source Interlink Media. The vehicle was not diagnosed or repaired.