: Rough Idle...Sluggish Acceleration....



Northstar Pimp
06-22-04, 02:17 PM
Only a few days ago my 95 Deville started "jerking" when I was at idle. Every couple of seconds (6 seconds max) the car would shake slightly and acceleration is sluggish. On the highway I pressed the accelerator and watched the instant mpg drop steadily from 15 to 7 as the car refused to accelerate. Is this a misfire? :banghead:

dloch
06-22-04, 04:40 PM
Only a few days ago my 95 Deville started "jerking" when I was at idle. Every couple of seconds (6 seconds max) the car would shake slightly and acceleration is sluggish. On the highway I pressed the accelerator and watched the instant mpg drop steadily from 15 to 7 as the car refused to accelerate. Is this a misfire? :banghead:
Almost sounds like a fuel problem... fuel filter dirty. etc. I would try to see what the fuel pressure is. You'll need a gage that will connect to the schrader valve on the fuel rail.