strange constant misfire
Thread Starter
Intermediate
Joined: Feb 2015
Posts: 29
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strange constant misfire
Guys,
need your help on this one. I was driving home in my 05 LS2 C6... going about 75 then all of the sudden she started running like ****.. misfiring.. I limped her home (20mph). I've changed the plugs and plug wires.. still running like **** and indicating misfire.
I've got no codes to indicate a coil pack issue only the p0300 (what ever it is) misfire code along with U2100 (which I don't believe has anything to do with the issue (or does it).
Any help appreciated.... I would assume if it was a cam position sensor or a crank position sensor it would throw a specific code for that.
Again, thanks for any help ya'll can give me!
need your help on this one. I was driving home in my 05 LS2 C6... going about 75 then all of the sudden she started running like ****.. misfiring.. I limped her home (20mph). I've changed the plugs and plug wires.. still running like **** and indicating misfire.
I've got no codes to indicate a coil pack issue only the p0300 (what ever it is) misfire code along with U2100 (which I don't believe has anything to do with the issue (or does it).
Any help appreciated.... I would assume if it was a cam position sensor or a crank position sensor it would throw a specific code for that.
Again, thanks for any help ya'll can give me!
Burning Brakes
Joined: Aug 2014
Posts: 1,240
Likes: 258
From: Tampa FL
Melting Slicks
Joined: Oct 2010
Posts: 2,220
Likes: 16
From: Sugarhill Ga
u codes are communication codes. p0300 is a multiple cylinder misfire. have you had the headlight recall done ? you may have something loose in the under hood fuse box. could you have gotten the fuse box wet ? how about the one under the passenger floor ? if the computer is loosing signal, that would explain the codes. I would start by checking battery cables and their connections 1st. then check the cam, (it is behind the water pump & has 2 connections ( 8" extension) and crank sensor (next to the starter) then check fuel injector harnesses, fuel pressure and compression.
Melting Slicks
Joined: Oct 2010
Posts: 2,220
Likes: 16
From: Sugarhill Ga
Thread Starter
Intermediate
Joined: Feb 2015
Posts: 29
Likes: 0
Okay ... did not know that.. do you think this is my issue based on what I have presented?
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Thread Starter
Intermediate
Joined: Feb 2015
Posts: 29
Likes: 0
help
u codes are communication codes. p0300 is a multiple cylinder misfire. have you had the headlight recall done ? you may have something loose in the under hood fuse box. could you have gotten the fuse box wet ? how about the one under the passenger floor ? if the computer is loosing signal, that would explain the codes. I would start by checking battery cables and their connections 1st. then check the cam, (it is behind the water pump & has 2 connections ( 8" extension) and crank sensor (next to the starter) then check fuel injector harnesses, fuel pressure and compression.
I will be going over all you have stated this weekend. I hope it's simple. Once the car warms a little it lines right out. Mis fires when 1st cold start primarily. I appreciate your help and guidance.
Thread Starter
Intermediate
Joined: Feb 2015
Posts: 29
Likes: 0
She is not throwing any code... just the flashing engine symbol indicating multi mis fire