92 Bonneville, runs weird while holding pedal steady
04-08-2007, 02:03 AM
#12
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Originally Posted by showshocka2k
Changed my MAP sensor today and still the same problem. The check engine light went out but the car stills runs rough and acts like it wants to shut down at idle even though it never shuts off...It'* great when I’m at a stop and I pull off strong, it doesn’t hesitate at all, and when I rev it up it doesn’t feel or sound like its missing or anything... at a constant speed of 20 to 30mhp it acts as if im not getting enough fuel or air or something. It’ll just sorter lurch and stutter as I drive.
http://www.bonnevilleclub.com/forum/...ic.php?t=75153
04-09-2007, 07:28 PM
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I havent checked the EGR yet. But my plans are to infact replace all the crumbing vaccum lines. I have to read in the book for procedure on checking the EGR. Reading all these posts..makes me think. I know the car is getting gas and air, but when Im driving it and level off I must be missing either gas or air. So Ill start with the easiest now, and go for the air. I had my local garage pull codes and I dont have any stored. THATS good news. I believe Ill also buy a fuel pressure gauge. Keep the thoughts coming..Im sure we will figure it out. THanks. John
04-11-2007, 10:26 AM
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I don't really have any suggestions to what is wrong, but I had that same problem on my first car. Granted it was a sunbird with the 3.1, but all the symptoms, ok idle, fine accelerating, but surges when you're just cruising. The only thing i can say is that my dad and I just tore the top half of the motor off and gave it a good spit shine and a few new parts in the valve train. That took care of it for about a year until a valve disintegrated in the motor.
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