2000 Hyundai Elantra Why does my 2000 Elantra shut off completely when I slow down or coast?
Why does my 2000 Elantra shut off completely when I slow down or coast?
What is your question?
I've had trouble with my Elantra for some time now, but nothing this severe. One day, after showing no warning signs, my husband and I were on our way to my work and his school and while we were slowing down at a red light, my car completely shut off. Power steering and all. It would not restart and we were panicking. Some nice men came and pushed us to the side where we sat for about 15 minutes. The car then started back up and we drove it like it was normal. We traveled roughly an hour at about 60MPH(no stops or slowing down) with no problems. Once we came to a stop light however, the car died again. 20 minutes later it started back up. As we were coasting on an exit ramp it died again!! Of all the 6 or 7 times it died that day it was always around low speeds(under 30mph) and while coasting or coming to a stop. I took it to the dealership where they replaced my Mass Air Inflow Sensor, which we thought was the problem, but it died the next day. I then took it back one more time and they told me I need a new Crankshaft Positioning Sensor. I've done some research on the CPS but am not sure if it sounds like problems I have dealt with or not. Can anyone give me some advice? Thanks so much!
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It is often hard to find a problem when it is intermittent, but your car has On Board Diagnostics, if a sensor like the crank shaft sensor or air flow meter went "open" it should leave a code in the computer. If the car is being driven when it does fail with a professional grade scan tool you can monitor key engine sensor values and operation straight from the scan tool rather than intrusively testing each sensor. Other possibilities are bad electrical connections or a failing fuel pump/circuit.
I'm not a trained mechanic, and never pretended to be. My only advice would be to start with the "cheap" stuff. I had a similar problem on my Elantra, and changing the plugs and wires fixed the problem. I also found that there was a disconnect with a hose from the air filter to the motor. Check all air hoses and tighten everything down. Hope this helps.
