HELP GOT A MISS FROM 800 to 1500 RPM
07-10-2009, 08:35 PM
#1
Teching In
Thread Starter
iTrader: (28)
Join Date: Mar 2008
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
HELP GOT A MISS FROM 800 to 1500 RPM Got a mis from idle 800 rpms to 1500 rpms. Rev it up it seems to clear up. Once in a while it back fires at low rpms. When motor is cold the miss is not there until motor warms up then its back again. Recenly chanced plugs and plug wires. I rececked wires and plugs everything seems to be OK. We put a scanner on it and it shows nothing, no codes of any kind. Maybe a weak coil when it warms up. A chevy tech told me he does not think thats it. Its fustrating when the scanner does not tell you ****. Any ideas. Any body? Thanks
09-18-2009, 07:58 PM
#3
TECH Enthusiast
iTrader: (1)
Join Date: Dec 2005
Location: Denver International Airport, Colorado USA
Posts: 549
Likes: 0
Received 0 Likes
on
0 Posts
Does it happen on decel or when you throttle it?
Your software should be able to log misfires. If I am slightly rich, on decel with DFCO I get a 'normal' backfire. Is that what you are experiencing?
..WeathermanShawn..
Your software should be able to log misfires. If I am slightly rich, on decel with DFCO I get a 'normal' backfire. Is that what you are experiencing?
..WeathermanShawn..
