Q: Car stalls at idle and fails to restart - 1993 Buick Century
The car intermittently stalls at idle, and can fail to restart after this. Trying again after results in slow cranking, but nothing else. Sometimes it will start an hour later, sometimes not. It can stall upon placing in drive, and usually sputters so if I keep RPMs high, then ok. Check engine lights have never come on until recent. I'm getting a low voltage to the TPS code. I have replaced CKP sensor, ICM, and MAF. New battery, new fuel filter, the alternator and starter test fine. Replaced spark plugs and their wires. The car gets spark when it won't start. Throttle body and fuel injection cleaning as well. I've detached the Torque converter, but still stalled.
Could this be all from TPS or bad ECM ?
My car has 73000 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
What others are asking
Is it a Good Idea to Get Oversized Wheels and Tires for My Car or Truck?
Your vehicle was initially designed with a specific wheel and tire combination that the manufacturer of the vehicle felt was best suited for safety and performance. Many times, the wheels and tires that come with a vehicle may seem too...
Check engine light is on with codes U110C and U0140
Have the battery checked first to see if it is okay. If the problem continues, then the body control module may not be working properly and would need to be replaced and programmed with a new body control module. This...
Transmission issue on a 2005 Porsche Boxster
It's not normal. But then again, it is sort of "normal" for a Porsche Boxster with 110,000 miles. They generally don't last that long before their transmissions go out. Every customer of mine that had one with the automatic transmission...
Car noise at higher speeds on slightly rough roads
Hello there, many different items can begin to cause noise at this type of speed. In many cases this is not noticed as the highest speed limits in most areas is 85 MPH. The most likely cause is body noise,...
Car shut down due to low battery voltage
Hello. Thanks for writing in about your 2015 Acura ILX. If the battery voltage (https://www.yourmechanic.com/article/how-to-check-the-voltage-of-a-car-battery) got that low then it will stall like this. It sounds to me like there was a bad connection at the battery or possibly the...
Engine light p0171
As you may know, his code is related to a lean fuel condition which is normally related to many of the items you have listed. I would recommend checking the injector pulses to be sure they are providing enough fuel...
When I start my car all the warning lights come on,but after a start driving it they all go off.
Hi there. It is normal for all of the lights to come on when the vehicle is first turned on. The vehicle does this as a bulb check for the systems. As long as the lights go off right after...
I changed my brakes and they still squeak I applied the brake stop squeak and they still squeak
Hi there. The leading cause of brakes squealing after replacing the pads is excessive brake dust trapped between the caliper and the rotor. Typically when brake jobs are completed, a professional mechanic will spray brake cleaner liberally on the calipers...
Car wont start. No crank, no response whrn key is turned? What do u suggest is the problem
Check to see if there are any stored diagnostic trouble codes. Be sure you have a fully charged battery that passes a load test (https://www.yourmechanic.com/services/battery-is-dead-inspection). Confirm that the engine immobilizer system (security system) is not activated thus preventing the car...
Related articles
A Buyer's Guide to the 2012 Buick Regal
The The 2012 Buick Regal is definitely not the Regal of yesteryear you may have heard your grandparents fawn over. This mid-size sedan has a lot of modern features that start at the engine and stretch all the way to...
The Best Used Cars to Buy If You Love Road Trips
If If you love to travel, comfort is very important in a vehicle. You want a nice, quiet ride, comfortable seating, and enough room. We have evaluated several used vehicles, and narrowed our favorite road trip vehicles down to the...
How Long Does a Cylinder Head Temperature Sensor Last?
The The engine’s performance is largely based on temperature measurements performed by the engine control module (ECM), also known as the vehicle’s computer. As the temperature of the engine increases, the resistance decreases which means the voltage drops. The computer...
Browse other content
Services
Maintenance