[check engine light] HOT CAM
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
Likes: 0
From: Ft. Worth Texas
St. Jude Donor '11
[check engine light] HOT CAM
Got my car out tonight and the check engine light came on after about 2 miles. Put in the cam early this week but just now getting the light. Is this normal? Any way to turn the light out? Need to get it tuned now with the cam?
I do think it could be running a little rich down low.
Car runs great....its just the light...I think..any help would be great.
thanks,
jeff
I do think it could be running a little rich down low.
Car runs great....its just the light...I think..any help would be great.
thanks,
jeff
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
Re: [check engine light] HOT CAM (GS345)
You'll have to pull the code and then see what it is. Chances are the PCM detected a misfire (You do have a GS, right?). Only the OBDII computers of the 96+ will detect the misfire. You may have to raise your idle slightly from what I have read from others.
People will only be able to offer you guesses like I have until you pull the code. The tool that will read the code can also reset it, clearing the light.
Mike
People will only be able to offer you guesses like I have until you pull the code. The tool that will read the code can also reset it, clearing the light.
Mike
Drifting
Joined: Jun 2001
Posts: 1,997
Likes: 1
From: Lake Ozark MO
Re: [check engine light] HOT CAM (GS345)
10-1 it's a P0300 code (Random Cylinder Misfire).
I'm dealing with that issue now in my LT1 to LT4/Hotcam conversion. The misfire codes affect my torque converter lockup.
If you have access to PCM programming, bumping up the idle should take care of it OR you could turn off SES activation associated with the code.
The Hotcam seems to like 900+ idle speeds for eliminating misfires.
I've also read from Chris Bennight (sp?) of Demon Motorsports fame, that reprogramming for a bit more fuel at lower (idle/off idle) rpm helps too. Although with LT1 Edit it looks like a pain.
Note: I want to say that the misfires that are detected by the OBDII system are minor and emissions related. Your engine is most likely running fine and it's the characteristics of the cam that are causing the detected misfires.
[Modified by Dan Parker '96, 1:22 AM 2/1/2003]
I'm dealing with that issue now in my LT1 to LT4/Hotcam conversion. The misfire codes affect my torque converter lockup.
If you have access to PCM programming, bumping up the idle should take care of it OR you could turn off SES activation associated with the code.
The Hotcam seems to like 900+ idle speeds for eliminating misfires.
I've also read from Chris Bennight (sp?) of Demon Motorsports fame, that reprogramming for a bit more fuel at lower (idle/off idle) rpm helps too. Although with LT1 Edit it looks like a pain.
Note: I want to say that the misfires that are detected by the OBDII system are minor and emissions related. Your engine is most likely running fine and it's the characteristics of the cam that are causing the detected misfires.
[Modified by Dan Parker '96, 1:22 AM 2/1/2003]
Safety Car
Joined: Jul 2001
Posts: 3,524
Likes: 1
From: Pinellas Florida Misfit
Cruise-In III Veteran
Re: [check engine light] HOT CAM (Zora)
10-1 it's a P0300 code (Random Cylinder Misfire).
Very common with a Hot Cam equipped OBD-II car. Raising the idle will help, but typically won't completely cure it. Disabling it or reducing the range where it can read is the best thing to do. I wouldn't be suprised if your not throwing an o2 sensor code either... hot cam likes to run rich with stock programming.
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
Likes: 0
From: Ft. Worth Texas
St. Jude Donor '11
Re: [check engine light] HOT CAM (GS345)
Thanks for the replys, so from what im gathering i really need to find someone to reprogram for me, in the mean time, any way to disable the light? Can I check the codes somehow?
jeff
jeff
Safety Car
Joined: Jul 2001
Posts: 3,524
Likes: 1
From: Pinellas Florida Misfit
Cruise-In III Veteran
Re: [check engine light] HOT CAM (GS345)
If you disconnect the battery for 15 seconds or so, it will reset the codes, but it's going to come back on. They sell code readers at autoparts stores that let you read the codes and clear them.
You've got three main choices with programming...
Ed Wright - going to charge $350, plus upgrades are 175.
PCMFORLESS $175, upgrades are 50.
LT1 Edit type software - $550.
I personally used PCMforless with very good results, but if you plan on doing a lot of tweaking, buying LT1 edit is the way to go.. will save you cash in the long run.
You've got three main choices with programming...
Ed Wright - going to charge $350, plus upgrades are 175.
PCMFORLESS $175, upgrades are 50.
LT1 Edit type software - $550.
I personally used PCMforless with very good results, but if you plan on doing a lot of tweaking, buying LT1 edit is the way to go.. will save you cash in the long run.
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Melting Slicks
Joined: Apr 2001
Posts: 2,474
Likes: 1
From: Drive it Like You Hate it Cincinnati OH
Re: [check engine light] HOT CAM (GS345)
i get the code intermittently. if you can't read the codes, autozone will for free. Just reset it and wait for it to come back.. :cheers:
Melting Slicks
Joined: Oct 2000
Posts: 2,726
Likes: 24
From: Freehold, NJ
Re: [check engine light] HOT CAM (GS345)
Thanks for the replys, so from what im gathering i really need to find someone to reprogram for me.
in the mean time, any way to disable the light? Can I check the codes somehow?
