Deleted AIR pump in 94 camaro, do I need to have it tuned?
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Deleted AIR pump in 94 camaro, do I need to have it tuned?
I took off the air pump in my 94 camaro today and capped off the line with a vaccume plug, the check engine light did not turn on. Do I need to have it tuned out of the computer? Car seems to be running fine, dis I delete it the proper way?
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The factory AIR pump has a fuse in the fuse box under the hood. If it's still there you're good.
The AIR system has many more components than just the pump. You have the rubber line that connects to the intake ducting. This can be removed and capped with a 5/8" vacuum cap. Then there are the AIR injection tubes. These are the lines that go from the AIR pump to the exhaust manifolds/headers. You can remove them and plug each manifold with an M22 drain plug (OBDII cars use an M18, available at most parts stores). You will need to cut the crossover tube in order to completely remove it. You COULD leave these lines in, but that kind of defeats the purpose of removing the pump.
The AIR system has many more components than just the pump. You have the rubber line that connects to the intake ducting. This can be removed and capped with a 5/8" vacuum cap. Then there are the AIR injection tubes. These are the lines that go from the AIR pump to the exhaust manifolds/headers. You can remove them and plug each manifold with an M22 drain plug (OBDII cars use an M18, available at most parts stores). You will need to cut the crossover tube in order to completely remove it. You COULD leave these lines in, but that kind of defeats the purpose of removing the pump.
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When the PCM calls for the EGR valve to be open and there is no change in manifold pressure via the MAP, the PCM detects it as a fault in the EGR system. This goes for both OBDI and II.
For the AIR pump, whenever it is running (on an OBDII car equipped with post-cat O2s) the PCM will look for a change in oxygen content via the post-cat O2s. If it does not see this change while the pump is supposed to be running, it sets the SES light.
For the AIR pump, whenever it is running (on an OBDII car equipped with post-cat O2s) the PCM will look for a change in oxygen content via the post-cat O2s. If it does not see this change while the pump is supposed to be running, it sets the SES light.
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When the PCM calls for the EGR valve to be open and there is no change in manifold pressure via the MAP, the PCM detects it as a fault in the EGR system. This goes for both OBDI and II.
For the AIR pump, whenever it is running (on an OBDII car equipped with post-cat O2s) the PCM will look for a change in oxygen content via the post-cat O2s. If it does not see this change while the pump is supposed to be running, it sets the SES light.
For the AIR pump, whenever it is running (on an OBDII car equipped with post-cat O2s) the PCM will look for a change in oxygen content via the post-cat O2s. If it does not see this change while the pump is supposed to be running, it sets the SES light.
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[QUOTE=RamAir95TA;13760729]When the PCM calls for the EGR valve to be open and there is no change in manifold pressure via the MAP, the PCM detects it as a fault in the EGR system. This goes for both OBDI and II.
For the AIR pump, whenever it is running (on an OBDII car equipped with post-cat O2s) the PCM will look for a change in oxygen content via the post-cat O2s. If it does not see this change while the pump is supposed to be running, it sets the SES light.[/QUOTE
I may be wrong here but the air injection lines go directly into the manifold so it would stand to reason that even the readings from the upstream o2's would also be affected. I thought that the down stream o2's were mainly to detect problems with the catalytic converter(S obd2). This is just a guess through reasoning, so i very well could be wrong.
For the AIR pump, whenever it is running (on an OBDII car equipped with post-cat O2s) the PCM will look for a change in oxygen content via the post-cat O2s. If it does not see this change while the pump is supposed to be running, it sets the SES light.[/QUOTE
I may be wrong here but the air injection lines go directly into the manifold so it would stand to reason that even the readings from the upstream o2's would also be affected. I thought that the down stream o2's were mainly to detect problems with the catalytic converter(S obd2). This is just a guess through reasoning, so i very well could be wrong.
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I may be wrong here but the air injection lines go directly into the manifold so it would stand to reason that even the readings from the upstream o2's would also be affected. I thought that the down stream o2's were mainly to detect problems with the catalytic converter(S obd2). This is just a guess through reasoning, so i very well could be wrong.