1997 Chevrolet Silverado Repair Question
Topics covered: Coolant, Sensor, Ignition module.
Mileage: 17,000 miles.
Mileage: 17,000 miles.
Asked on April 24, 2012
Sometimes when I start my truck it "shudders" and a white smoke with a sulfur like smell comes from under the hood. It will then start like normal.
It has done this about 4 times.After the fourth time it would not start. I took it to a shop and they replaced the ignition module and it started again, but it did the smoke thing again. I'm stumped please help...thank you
Asked by bniland2Answer
Replied on April 24, 2012
sulfur is usually the cat converter overheating from too much unburnt fuel. you need to have the injector system checked for running rich like a coolant sensor failing.
Roy
Roy
Replied on April 24, 2012
So it's possibly a coolant sensor in the injector system?
Replied on April 24, 2012
possibly but a shop with a scan tool can monitor it for you to verify.
Roy