audi 2.7t problems with jolting in low revs
09-20-2008, 10:33 AM
#1
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audi 2.7t problems with jolting in low revs
I am getting jolting in low rev's and idle but when the revs get higher the problem goes i have replaced the spark plugs and coil pack anyone have any ideas
09-20-2008, 01:15 PM
#2
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Re: audi 2.7t problems with jolting in low revs
Need a VAG scan and report any code(s).
Does the jolting feel like misfires? One check is to idle engine and VAG-COM log Engine Block 15 to see misfires on Cyl 1 2 3 and Block 16 to see misfires on cyl 4 5 6.
Could be a number of things like incorrect gap plugs, intake boost leak, vacuum leak, dirty / failing MAF, ignition Power Output Stages on top of airbox, combo of failing EGT and front O2 sensors, etc.
Does the jolting feel like misfires? One check is to idle engine and VAG-COM log Engine Block 15 to see misfires on Cyl 1 2 3 and Block 16 to see misfires on cyl 4 5 6.
Could be a number of things like incorrect gap plugs, intake boost leak, vacuum leak, dirty / failing MAF, ignition Power Output Stages on top of airbox, combo of failing EGT and front O2 sensors, etc.
09-20-2008, 03:49 PM
#3
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Join Date: Sep 2008
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Re: audi 2.7t problems with jolting in low revs
Need a VAG scan and report any code(s).
Does the jolting feel like misfires? One check is to idle engine and VAG-COM log Engine Block 15 to see misfires on Cyl 1 2 3 and Block 16 to see misfires on cyl 4 5 6.
Could be a number of things like incorrect gap plugs, intake boost leak, vacuum leak, dirty / failing MAF, ignition Power Output Stages on top of airbox, combo of failing EGT and front O2 sensors, etc.
Does the jolting feel like misfires? One check is to idle engine and VAG-COM log Engine Block 15 to see misfires on Cyl 1 2 3 and Block 16 to see misfires on cyl 4 5 6.
Could be a number of things like incorrect gap plugs, intake boost leak, vacuum leak, dirty / failing MAF, ignition Power Output Stages on top of airbox, combo of failing EGT and front O2 sensors, etc.
09-20-2008, 04:20 PM
#4
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Re: audi 2.7t problems with jolting in low revs
Is your CEL coming on?
I work on several cars so I'm completely sold on the software licensed VAG-COM cable from Ross Tech, should be in the $230 to $350 range depending on your needs, or more $$ for the Pro kits.
VCDS (VAG-COM): Ross-Tech Store
You can purchase a cheap ebay OBD-II cable and use Ross Tech VAG-COM v4.09 (older version). Basic functionality for inexpensive cost for supporting your car but obviously does not have some of the new VAG-COM software updates.
I work on several cars so I'm completely sold on the software licensed VAG-COM cable from Ross Tech, should be in the $230 to $350 range depending on your needs, or more $$ for the Pro kits.
VCDS (VAG-COM): Ross-Tech Store
You can purchase a cheap ebay OBD-II cable and use Ross Tech VAG-COM v4.09 (older version). Basic functionality for inexpensive cost for supporting your car but obviously does not have some of the new VAG-COM software updates.
09-22-2008, 01:56 PM
#5
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Re: audi 2.7t problems with jolting in low revs
not sure what the cel is i have no fault displays on the dash have taken the maf sensor off and checked for splits on the air intake the problem was there before i changed the coil packs and sparkplugs so dont thik that it will be that have ordered the vag com so hope that this will tell me somthing many thanks
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