General Maintenance & Repairs - Is this normal? Low RPM "chugging"
02-12-2008, 06:07 PM
Well I have an M6, when I'm cruising below 2k RPM or so and press the gas like 3/4 or more/floor it, it like chugs and misses until it gets above 2k or so... and I don't know if this is normal because the RPM's are so low, or if I have a slight miss or something going on here.. ?
But if I ease the gas it drives smoothly. I'll be cruising at ~60-65 with the cruise on and go up a steep hill, so the cruise will accelerate to stay at speed and it will do the same thing at the low RPM's...
So M6 guys when you're <2K and floor it does it keep going smooth or do what I'm describing?
02-12-2008, 06:13 PM
sounds like your in for a plug and wire change, mine did that when i had a couple fried wires
02-12-2008, 06:19 PM
change your plugs and wires, i ended up having 1 broken spark plug!! that solved my problem! i had same exact problem as you described
02-12-2008, 07:04 PM
It has done it since I bought the car. I've put new plugs and wires on it... Opti..? I mean once it hits above 2k it is fine. I raced a M6 GTO and was dead even, It drives good in the upper rpm's...
02-12-2008, 07:10 PM
now when i think of a broken plug i think of it being in 2 pices.
02-12-2008, 07:35 PM
havent u guys seen the pic of the broken plug i had posted?? its the NGK iradium tr55 the ceramic park was shattered! so the plug was grounding itself
02-12-2008, 09:58 PM
My car does this. It's an auto. It chugs along at like 1400-1800rpms when I'm lightly pressing the throttle.
02-12-2008, 10:01 PM
My car does it every once in a while. I seafoamed it and cleaned the MAF and haven't had a problem since. I also had a loose spark plug though that may have been causing it.
02-13-2008, 04:12 AM
could also need a tune, mine did this after the cam until i got it tuned
02-13-2008, 05:33 PM
Well my car is 100 % stock. Guess this isn't normal
02-13-2008, 05:42 PM
did you remember to change your coil wire when you did plugs and wires
by the looks of your sig you have a 96 are you throwing any misfire codes?
02-13-2008, 08:22 PM
When I bought the car with 78k miles, it still had the original plugs & wires, an obvious misfire, and code P0300. One of the plugs was green on top and the wire was rusty. I put new plugs & wires on it, including the coil wire. That took care of the misfire and the code. But it still has always done what I'm describing... :confused:
02-13-2008, 09:56 PM
make sure your spark plugs are properly gapped