Halltech Venom + CEL
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Halltech Venom + CEL
Installed my Venom the night before last. Since then I have put about 100 miles on the car with no problems.
This afternoon, I washed my car and afterwards, drove it to get something to eat. On my way back home, the check engine light came on. I popped the hood in my garage to make sure nothing came loose, etc. I then inspected the air filter and noticed if had gotten a little bit damp, as a result of the washing.
Think this could throw on the CEL and what's the best recourse? Dry off the filter with a blow dryer?
Otherwise, no issues with the Venom. The install was straight forward. It would be nice it the kit came with instructions though. Fitment was perfect.
This afternoon, I washed my car and afterwards, drove it to get something to eat. On my way back home, the check engine light came on. I popped the hood in my garage to make sure nothing came loose, etc. I then inspected the air filter and noticed if had gotten a little bit damp, as a result of the washing.
Think this could throw on the CEL and what's the best recourse? Dry off the filter with a blow dryer?
Otherwise, no issues with the Venom. The install was straight forward. It would be nice it the kit came with instructions though. Fitment was perfect.
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My guess is that the check engine light has nothing to do with the Venom install. Grab the code and let us know what it is. It coould be the smog pump check valve that sits behind the intake manifold. My check valve threw the check engine light a few weeks ago. I reset it and it's been fine ever since.
Another thing to consider is that 02-04 Z06s do not have MAF screens. The turbulent flow of air past the heated wire increases in velocity after an aftermarket filter system is installed, potentially causing a lean code to be thrown. This was an issue with Halltech Stinger - equipped Z06s. Some owners had their cars dyno-tuned. Others installed screened MAFs. If you are seeing a lean code, contact Jim Hall of Halltech. He should have some answers for you.
Another thing to consider is that 02-04 Z06s do not have MAF screens. The turbulent flow of air past the heated wire increases in velocity after an aftermarket filter system is installed, potentially causing a lean code to be thrown. This was an issue with Halltech Stinger - equipped Z06s. Some owners had their cars dyno-tuned. Others installed screened MAFs. If you are seeing a lean code, contact Jim Hall of Halltech. He should have some answers for you.
Last edited by Dave68; Oct 27, 2008 at 09:45 AM.
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St. Jude Donor '09
It could be related if it is a lean code. Here is what would be causing that condition, and it is easy to fix.
Our connector hose is thicker than the plastic MAF end and when the hose-clamp is connected to the hose, if it is touching the plastic alignment tab on the MAF, it is not sealing the hose to the MAF.
The easy fix is to use the stock slotted hose clamp as shown here in the Supplemental Installation Instructions:
http://www.corvettels7.com/c5supplementalinstall.pdf
This should take care of the problem. You can clear the codes on your DIC. Be sure they are not related to other issues that you need to have the dealer look at first.
Our connector hose is thicker than the plastic MAF end and when the hose-clamp is connected to the hose, if it is touching the plastic alignment tab on the MAF, it is not sealing the hose to the MAF.
The easy fix is to use the stock slotted hose clamp as shown here in the Supplemental Installation Instructions:
http://www.corvettels7.com/c5supplementalinstall.pdf
This should take care of the problem. You can clear the codes on your DIC. Be sure they are not related to other issues that you need to have the dealer look at first.
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"World Class Performance for your Corvette"
Intake Design and Engineering since 1999
Halltech Systems, LLC
423-915-6056
For service email:
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www.halltechsystems.com
"World Class Performance for your Corvette"
Intake Design and Engineering since 1999
Halltech Systems, LLC
423-915-6056
For service email:
orders@halltechsystems.com
www.halltechsystems.com
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From: Las Vegas NV
Wish I would've read these last night.
I blow dried the air filter and reset the ECU (which cleared any possible codes). I'm not sure what was causing the CEL originally.
After driving it 60 miles today, no issues and no CEL's to report.
I blow dried the air filter and reset the ECU (which cleared any possible codes). I'm not sure what was causing the CEL originally.
After driving it 60 miles today, no issues and no CEL's to report.
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St. Jude Donor '09
Jim
Last edited by Halltech; Oct 27, 2008 at 08:14 PM.
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If it IS a lean code, it will come back after a number of starts. I'd follow Jim's advice and check the clamp, ASAP!
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Okay, I think I see what the issue may be. The way the elbow sits, it pulls the bottom of the clamp upward, causing it to work its way free a bit. Any ideas of a solution? I just reset it, but I believe it will continue to do this. Maybe i can fix by angling the connection to the TB upwards some?
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The clamps should be tight enough so that the "tubes" (TB coupler and airbridge) cannot rotate, but not any tighter. Overtightening can distort the platic or rubber parts and cause the clamp to walk and the plastic/rubber parts to lose their sealing ability. I'm not sure what it is that you call an elbow, but my Stinger connections stay tight until I take things apart to clean the filter (every 5000 miles or so).
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The clamps should be tight enough so that the "tubes" (TB coupler and airbridge) cannot rotate, but not any tighter. Overtightening can distort the platic or rubber parts and cause the clamp to walk and the plastic/rubber parts to lose their sealing ability. I'm not sure what it is that you call an elbow, but my Stinger connections stay tight until I take things apart to clean the filter (every 5000 miles or so).
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St. Jude Donor '09
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From: Las Vegas NV
CEL Came back on
Okay, the check engine lamp came back on this morning. These are the codes I pulled from it.
P0171 H Fuel Trim System Lean bank 1-B
P0174 H Fuel Trim System Lean bank 2-B
I rechecked the connections for the intake and they are snug and the tab is still aligned.
Any suggestions?
P0171 H Fuel Trim System Lean bank 1-B
P0174 H Fuel Trim System Lean bank 2-B
I rechecked the connections for the intake and they are snug and the tab is still aligned.
Any suggestions?
Last edited by ZShot; Oct 31, 2008 at 11:01 AM.
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From: Bristol, Tennessee
St. Jude Donor '09
Okay, the check engine lamp came back on this morning. These are the codes I pulled from it.
P0171 Fuel Trim System Lean bank 1-B
P0174 Fuel Trim System Lean bank 2-B
I rechecked the connections for the intake and they are snug and the tab is still aligned.
Any suggestions?
P0171 Fuel Trim System Lean bank 1-B
P0174 Fuel Trim System Lean bank 2-B
I rechecked the connections for the intake and they are snug and the tab is still aligned.
Any suggestions?
The C6 MAF is the fix. GM decided to change the 02-04 Z06 MAFs by pulling out the laminar flow honeycomb screen. That screen keeps the fuel trims steady.
We have one in stock we can swap out for your MAF. I guarantee this will end the issue.
You can also program the MAF trims mostly at idle to dial in the Long Term Trims, but this swap has worked in every case we have run into.
Interestingly, this only occurs once a year, out of hundreds of units sold. I think some of the MAFs read on the high side to begin with +fuel, and when coupled with any aftermarket intake that lowers restriction, they go beyond the threshold of positive trims causing the lean codes. There are many other things, such as vacuum line leaks that can cause this code, but if you did not ever see it before, it is likely the new intake, or the installation.
I once had a customer with an LS1 have this issue back in 2001. He came by our shop, then in HB CA and it turned out that he had a vacuum line to open cutouts in his exhaust. That line had a cut in it near the hose clamps and was leaking. That small amount of extra air, caused the codes.
email me at inquiry@halltechsystems.com
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Joined: Apr 2007
Posts: 94
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From: Las Vegas NV
The C6 MAF is the fix. GM decided to change the 02-04 Z06 MAFs by pulling out the laminar flow honeycomb screen. That screen keeps the fuel trims steady.
We have one in stock we can swap out for your MAF. I guarantee this will end the issue.
You can also program the MAF trims mostly at idle to dial in the Long Term Trims, but this swap has worked in every case we have run into.
Interestingly, this only occurs once a year, out of hundreds of units sold. I think some of the MAFs read on the high side to begin with +fuel, and when coupled with any aftermarket intake that lowers restriction, they go beyond the threshold of positive trims causing the lean codes. There are many other things, such as vacuum line leaks that can cause this code, but if you did not ever see it before, it is likely the new intake, or the installation.
I once had a customer with an LS1 have this issue back in 2001. He came by our shop, then in HB CA and it turned out that he had a vacuum line to open cutouts in his exhaust. That line had a cut in it near the hose clamps and was leaking. That small amount of extra air, caused the codes.
email me at inquiry@halltechsystems.com
We have one in stock we can swap out for your MAF. I guarantee this will end the issue.
You can also program the MAF trims mostly at idle to dial in the Long Term Trims, but this swap has worked in every case we have run into.
Interestingly, this only occurs once a year, out of hundreds of units sold. I think some of the MAFs read on the high side to begin with +fuel, and when coupled with any aftermarket intake that lowers restriction, they go beyond the threshold of positive trims causing the lean codes. There are many other things, such as vacuum line leaks that can cause this code, but if you did not ever see it before, it is likely the new intake, or the installation.
I once had a customer with an LS1 have this issue back in 2001. He came by our shop, then in HB CA and it turned out that he had a vacuum line to open cutouts in his exhaust. That line had a cut in it near the hose clamps and was leaking. That small amount of extra air, caused the codes.
email me at inquiry@halltechsystems.com
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From: Las Vegas NV
I received the new C6 MAF from Halltech a couple days ago and installed it last night. Went in without a hitch and I am extremely satisfied with the entire process.
Jim is a very stand-up guy. He was under no obligation to go thru the hoops he did. It really shows the level of customer service which is provided by Halltech.
to Jim and Halltech.
Thanks again.
Jim is a very stand-up guy. He was under no obligation to go thru the hoops he did. It really shows the level of customer service which is provided by Halltech.
to Jim and Halltech.Thanks again.
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Joined: Mar 2002
Posts: 13,099
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From: Bristol, Tennessee
St. Jude Donor '09
