[Z06] HELP! 02 Z06 Big Problem
Thread Starter
4th Gear
Joined: Dec 2015
Posts: 4
Likes: 0
HELP! 02 Z06 Big Problem
Hey everyone,
I have an 02 Z06 and it has been having a problem under power. It feels like a miss and is making a strange noise (sounds like crackling in exhaust).
At idle and normal driving, it runs fine. No check engine light. But as soon as I get on it at around 3k rpms the check engine light flashes and cuts throttle. (traction control is off so I know its not that)
Also the power isn't all there. This happened out of no where, one day it ran fine and now I'm having this problem. I'm thinking its something with the computer. I have an OBDII scanner plugged in while I'm driving and it has a mode where you can run a test while driving. So with the test running I WOT and it has the miss, but the scanner says link error every time.
I know these cars have a lot of problems with ground wires so any suggestions on what I should do will be greatly appreciated.
Also I am located in the Bay Area, so if anyone knows of good tuners I could take it too that could help as well.
Thank you
I have an 02 Z06 and it has been having a problem under power. It feels like a miss and is making a strange noise (sounds like crackling in exhaust).
At idle and normal driving, it runs fine. No check engine light. But as soon as I get on it at around 3k rpms the check engine light flashes and cuts throttle. (traction control is off so I know its not that)
Also the power isn't all there. This happened out of no where, one day it ran fine and now I'm having this problem. I'm thinking its something with the computer. I have an OBDII scanner plugged in while I'm driving and it has a mode where you can run a test while driving. So with the test running I WOT and it has the miss, but the scanner says link error every time.
I know these cars have a lot of problems with ground wires so any suggestions on what I should do will be greatly appreciated.
Also I am located in the Bay Area, so if anyone knows of good tuners I could take it too that could help as well.
Thank you
Instructor
Joined: Aug 2012
Posts: 161
Likes: 3
Did this happen after recently fueling up? Maybe a bad batch of gas at a station. Or, if you don't drive it too often, the ethanol in the fuel may have separated like water and oil do causing super poor octane. Kinda sounds like a detonation issue.
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Thread Starter
4th Gear
Joined: Dec 2015
Posts: 4
Likes: 0
Don't believe that its the gas. The problem occurred on the same tank and it hasn't been sitting for an extended period of time.
Instructor
Joined: May 2006
Posts: 123
Likes: 15
https://www.corvetteforum.com/forums...post1551528132
Instructor
Joined: Dec 2007
Posts: 231
Likes: 10
From: NH
If it has cats check them to make sure the brick has not moved
I have had a few fail both factory and aftermarket.
Some aftermarket cats are a folded metal substrate not a ceramic core they can and do shift and will cause similar symptoms by rectricting flow from one side of the engine. it has happened to both of our race cars we run cats to save points in the class.
The reduced power and skip combined with the noise makes me believe this is the issue.
I have had a few fail both factory and aftermarket.
Some aftermarket cats are a folded metal substrate not a ceramic core they can and do shift and will cause similar symptoms by rectricting flow from one side of the engine. it has happened to both of our race cars we run cats to save points in the class.
The reduced power and skip combined with the noise makes me believe this is the issue.
Last edited by 555ss; Mar 2, 2017 at 06:40 AM.
Race Director
Joined: Jan 2001
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From: P-town Baby! Virginia
