Rough idle
#11
Senior Member
True Car Nut
I agree, you would probably do well with a full seafoam treatment and then full tuneup.
Also, keep in mind, I don't think series 1 knows how to throw a misfire code.
Also, keep in mind, I don't think series 1 knows how to throw a misfire code.
#12
Senior Member
Posts like a Supercharger
Thread Starter
Ok, here is my update,
I replaced plugs and wires, 02 sensor and air filter. Still have that stumbling/cutting out feeling.
Happen off and on in the 50-60MPH and sometimes as low as 40 and high as 65. Typically on a slow acceleration or uphill.
The stumbling at idle and take off (feels like the above) has stopped since I cleaned out the MAP sensor.
Any advice would be greatly appreciated.
I replaced plugs and wires, 02 sensor and air filter. Still have that stumbling/cutting out feeling.
Happen off and on in the 50-60MPH and sometimes as low as 40 and high as 65. Typically on a slow acceleration or uphill.
The stumbling at idle and take off (feels like the above) has stopped since I cleaned out the MAP sensor.
Any advice would be greatly appreciated.
#15
Senior Member
Posts like a Supercharger
Thread Starter
Thanks forgot to mention that there are no codes, no flashing CEL.
Also, it was mentioned that when I unplug the MAF with the engine running it should fall to a default setting. It stalled.
Also, it was mentioned that when I unplug the MAF with the engine running it should fall to a default setting. It stalled.
#16
Senior Member
True Car Nut
Check the ignition coils as explained in this link:
https://www.gmforum.com/trouble-shoo...-wires-278818/
When is the last time you changed the fuel filter? If it has been a while, change it. If still no improvement you should get a gage and check fuel pressure at the fuel rail.
If coils and fuel pressure check out, you may have misfiring injectors. Run a top end cleaner into the intake like SeaFoam and see if things clear up.
https://www.gmforum.com/trouble-shoo...-wires-278818/
When is the last time you changed the fuel filter? If it has been a while, change it. If still no improvement you should get a gage and check fuel pressure at the fuel rail.
If coils and fuel pressure check out, you may have misfiring injectors. Run a top end cleaner into the intake like SeaFoam and see if things clear up.
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