QuestionQUESTION: Driving on the freeway: first the check engine light came on. then the digital speedometer became erratic. still run OK. Came home, parked for 30 minutes then drove again after about 15 miles the car began running rough then loss of power and chugging. engine rpm on digital ifno system also erratic. when car is in park engijne idles fine.
ANSWER: Is the check engine light illuminated when the car is idling in park ?.
Do you know how to retrieve the codes from the computer ?.
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QUESTION: 1. Yes, the engine light stays on while idling in park.
2. No. Is there a way to retrieve codes without taking to a shop? Can I get codes from the dashboard info screen?
3. Car has 110 -120K miles.
ANSWER: What MODEL ?
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QUESTION: Sedan Deville, I believe a Northstar engine
AnswerFollow this directive to retrieve the codes:
1. Ignition switch ON. Engine NOT running.
2. Simultaneously push and hold the OFF and WARMER buttons on the climate control panel for 3 seconds and release them.
3. On the fuel data display you will see codes in the form of LETTERS & NUMBERS appearing and along with each code will be the word HISTORY or CURRENT.
4. The display will stop at PCM?
5. Tell me what codes you get.
6. Turn ignition OFF.
