Check Engine Light
Thread Starter
Advanced
Joined: Sep 2002
Posts: 61
Likes: 0
From: San Diego CA
Check Engine Light
After clearing traffic and could see open road in front of me I decided to let the beast roar since I had been driving at granny speed for the last few weeks. I was in fourth gear at about 2000 RPM and started pushing the pedal. At roughly 3000 RPM I reached the floor board and noticed a reduction in power and the "CHECK ENGINE" light started flashing. Immediately I got out of it but the little yellow light persisted. After about 1 minute of slowing I downshifted and the light went away. Has anyone experienced this?
Stats on my car:
2003 Z06
Donaldson intake
Throttle body bypass
178 deg. thermostat
WCC Air Bridge
X Pipe
Borla Stingers
Thanks in advance,
Jefe
Stats on my car:
2003 Z06
Donaldson intake
Throttle body bypass
178 deg. thermostat
WCC Air Bridge
X Pipe
Borla Stingers
Thanks in advance,
Jefe
Drifting
Joined: Aug 2003
Posts: 1,951
Likes: 0
From: Apopka FL
Re: Check Engine Light (jefe)
What codes are you getting. Hit and hold the options button and press the fuel button 4 times in a row, and it will run a diagonistics and tell you what codes you have. We can help from there. :thumbs:
Le Mans Master
Joined: Jul 2002
Posts: 6,147
Likes: 32
From: Dallas TX
Re: Check Engine Light (jefe)
You know what: I have gotten the code a couple of times the last 2 months or so.
I have searched all the lists of diagnostic codes and I cannot find that one. I hope someone chimes in.
I have searched all the lists of diagnostic codes and I cannot find that one. I hope someone chimes in.
Melting Slicks
Joined: Aug 2001
Posts: 3,039
Likes: 121
From: Wichita KS
Re: Check Engine Light (jefe)
Just checked the codes and only have one in "10 PCM". The code is "P0128 C". ....
P0128 is used to detect a faulty thermostat or excessive coolant flow through the bypass hose. P0128 can also be set by a skewed engine coolant temperature sensor.
Has the thermostat or cooling system been modified?
Thread Starter
Advanced
Joined: Sep 2002
Posts: 61
Likes: 0
From: San Diego CA
Re: Check Engine Light (mapman)
Yes the thermostat was changed to a 178 degree but you can rest assured that the stock one will be back in this afternoon to see if this happens again. Thanks Guys.
Cheers to All,
Jefe
Cheers to All,
Jefe
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Le Mans Master
Joined: Jul 2002
Posts: 6,147
Likes: 32
From: Dallas TX
Re: Check Engine Light (jefe)
It might just be that you drive the car in the cold for a while before it gets warmed up.
Sitting in the cold overnight can lower coolant temps to as low as 50 degrees.
If you start up and drive immediately, the temp might be real cold for the first 10 mins or so. I dont know how long it takes for the code to come up.
I just realized that I only got the code when leaving friend's houses and not warming the car up for a couple minutes. (they get mad because its so loud)
Sitting in the cold overnight can lower coolant temps to as low as 50 degrees.
If you start up and drive immediately, the temp might be real cold for the first 10 mins or so. I dont know how long it takes for the code to come up.
I just realized that I only got the code when leaving friend's houses and not warming the car up for a couple minutes. (they get mad because its so loud)
Melting Slicks
Joined: Dec 2001
Posts: 2,040
Likes: 0
From: Collin County Texas
Re: Check Engine Light (kumar75150)
Never had this code until the EWP and lower temp thermostat were installed. I get this code now. It seems to clear itself after you drive around to warm things up.
Melting Slicks
Joined: Dec 2001
Posts: 2,040
Likes: 0
From: Collin County Texas
Re: Check Engine Light (kumar75150)
Same as yours. It will creap up higher in town, but settles down to the 160 range.
Planning to go to Hallsville Saturday. Looks like racers weather!
Planning to go to Hallsville Saturday. Looks like racers weather!
Le Mans Master
Joined: Jan 2003
Posts: 6,427
Likes: 0
From: houston texas
Re: Check Engine Light (RWhite)
be safe on your trip to east texas, i guess you will be showing a certain east texas racer just how a h/c c-5 really runs........ :lol: :lol: :lol: :lol: :lol: :lol:
[Modified by MC TORCH RED, 8:21 PM 2/5/2004]
[Modified by MC TORCH RED, 8:21 PM 2/5/2004]