Rough idle and loss of power

Asked by Sep 13, 2015 at 06:07 PM about the 2003 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

I own a 2003 deville, one day I started to car and it worked fine so I stopped
to put some gas in it and when I started it again it had a rough idle and no
power I was told to replace to oxygen Sensors and spark plugs, so I replaced
them and the car is still having the same problems, please help.

2 Answers

28,045

and have you changed the fuel filter>>>? also put in 2 bottles or 1 of ZMAX fuel additive...theres dirty gas out there...

3 of 3 people found this helpful.

Changed both crank position sensors. Before I parked it, it was making noise from under air filter housing and it had no power. It would chug and die if I didn't let off in time. It still does it after replacing sensors. Idle is smooth, can accelerate engine in park but no power after in gear. It makes the noise either way. Low frequency noise.

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