VETTE slightly Shaking when stopped , slight rough idle
08-02-2011, 05:34 PM
#1
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VETTE slightly Shaking when stopped , slight rough idle
2001 C5-I have noticed a few days ago that when Im stopped at a light or parked the VETTE shakes 3-4 times and goes back to normal again, the idle barely moves but you can feel the engine shake the whole VETTE like it wants to turn off, it happens every 5 mins or so. The Alternator and New Battery were replaced 3 years ago, as well as the spark plugs. I checked the CAI and everything seems to be tight-no CEL so thats out. Could it be the starter, misfire ?
08-02-2011, 05:41 PM
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Plugs were changed either `07 or `08 , Im not sure about the wires-gotta check my invoices from my mechanic. I will pull the codes, I also have some ACTIVE HANDLING coming up every now and then on the DIC
64,000 Miles on the VETTE
64,000 Miles on the VETTE
Last edited by b52martin; 08-02-2011 at 05:46 PM.
08-02-2011, 06:12 PM
#4
Team Owner
My '01 does that once in a while too. No codes....
08-02-2011, 09:33 PM
#5
2001 C5-I have noticed a few days ago that when Im stopped at a light or parked the VETTE shakes 3-4 times and goes back to normal again, the idle barely moves but you can feel the engine shake the whole VETTE like it wants to turn off, it happens every 5 mins or so. The Alternator and New Battery were replaced 3 years ago, as well as the spark plugs. I checked the CAI and everything seems to be tight-no CEL so thats out. Could it be the starter, misfire ?
and also check the connections of the air supply to throttle body.
01-05-2013, 12:44 PM
#10
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CI 6,7,8,9,11 Vet
St. Jude Donor '08
You have an idle issue. Could be a whole host of issues:
Vacuum leak
Loose/damaged or defective spark plug wires
Dirty MAF & Throttle Body
Check ALL of the above and YES,, read and post your DTCs Clear them all and when the issue happens,, without turning the ignition off, read the DTCs using the DIC
Remove the wires and inspect. End to end, the OEM wires should read right around 350 ohms (spec= 275-750 ohms)
Remove the complete air intake assy, remove the filter and SPRAY/FLUSH the MAF with MAF cleaner. Let it evaporate dry and clean the Throttle body and blade. The blade flops shut and does NOT shut tight. Normal!!!
Reassemble!
Inspect the entire PCV system for deterioration damage. Theres a Y connection behind the manifold on some cars and a PCV rubber fitting behind the TB on the passengers side on the others (Late C5 and ZO6)
Late model C5 or ZO6 style short U tube in the rubber housing:
LS1 style:
Make sure that none of the hoses or fittings are damaged, cracked or rotted.
BC
Vacuum leak
Loose/damaged or defective spark plug wires
Dirty MAF & Throttle Body
Check ALL of the above and YES,, read and post your DTCs Clear them all and when the issue happens,, without turning the ignition off, read the DTCs using the DIC
Remove the wires and inspect. End to end, the OEM wires should read right around 350 ohms (spec= 275-750 ohms)
Remove the complete air intake assy, remove the filter and SPRAY/FLUSH the MAF with MAF cleaner. Let it evaporate dry and clean the Throttle body and blade. The blade flops shut and does NOT shut tight. Normal!!!
Reassemble!
Inspect the entire PCV system for deterioration damage. Theres a Y connection behind the manifold on some cars and a PCV rubber fitting behind the TB on the passengers side on the others (Late C5 and ZO6)
Late model C5 or ZO6 style short U tube in the rubber housing:
LS1 style:
Make sure that none of the hoses or fittings are damaged, cracked or rotted.
BC
01-05-2013, 04:59 PM
#12
Le Mans Master
01-06-2013, 12:53 AM
#13
Intermediate
I had noticed mine running slightly rough after I bought it. While I was adding my Blackwing and powerduct I cleaned the throttle body. It was pretty gunky. Made a very noticeable difference.
01-07-2013, 12:14 AM
#14
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Depending on where the plugs were sourced you might have too much gap. There are listings for replacment Iridium plugs with a 60 thou gap when it should be 40 thou. They come pre-gapped so you're supposed to just stick them in. The extra gap and the plugs getting some life on them could be contributing to the problem.
