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1st Gen RL Forum for the 1996-2004 Acura RL

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Old 12-18-06, 09:50 PM   #1 (permalink)
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Car 1: 1996 Acura 3.5 RL
Car 2: 2007 Lexus RX 350
Car 3: 2002 Nissan Maxima
96 RL - Check Engine Light

The check engine light on my 96 RL has been on for about 6 months now. I got the free OBD test at AutoZone that said it was the EGR valve. I cleaned the valve however after driving ~50 miles it came back on. I installed a new EGR valve last week, the check engine light came back on today just after ~100 miles. I have to go for emissions testing soon and I know I wouldn't pass with this problem. Do you know if I'm suppose to reset the computer after changing the valve? Any ideas/suggestions as to what else I could check before taking the car to the dealer to get ripped off? As always, any help would be greatly appreciated. Thanks.
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Old 12-20-06, 03:03 PM   #2
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Car 1: 1999 RL
The computer will reset itself after driving your car 3 different times if the error is gone. My guess is that nothing was wrong with your EGR valve but instead your EGR port is clogged.

Look at the sticky on the EGR and Intake Manifold cleaning

DIY: EGR and Intake Manifold Cleaning

This will show you how to get to the EGR port to clean it yourself. If yours is like mine it will be nearly clogged shut in the tube and the backside of the intake manifold. I cleaned mine best I could and 3 trips later the light was off. No need to replace the valve.
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Old 12-21-06, 01:45 AM   #3
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Car 1: 1996 Acura 3.5 RL
Car 2: 2007 Lexus RX 350
Car 3: 2002 Nissan Maxima
WOW! What a good write up, but it doesn't sound like something I would want to take on in the winter, I might have to wait till the spring to take on a job like that. Just to get through emissions testing now, is there an easy way for me to clean the EGR port without taking everything apart?
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Old 12-21-06, 01:40 PM   #4
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Car 1: 1999 RL
Try a bottle of Chevron fuel injector cleaner in your next fill up or two. That delayed my need to clean it a few months as the light would go back off for a while then come back on.

You can also try taking the EGR valve back off and spraying cleaner back down through the port. Don't know if it will help but can't hurt to try.

Another option is to try an application of Sea Foam in the intake manifold.
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Old 12-21-06, 09:04 PM   #5
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Car 1: 1996 Acura 3.5 RL
Car 2: 2007 Lexus RX 350
Car 3: 2002 Nissan Maxima
Thanks, I'll give that a try tomorrow (I'll start with the Chevron fuel injector cleaner). Hopefully it works, I just need the check engine light to stay off for a week or so allowing new readings to be recorded so I could pass the emissions test. But I'll definitely take the whole thing apart in the spring and clean it....I'll let you know how it goes.
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Old 02-17-09, 11:20 AM   #6
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Car 1: 00 RL
Map, did you end up passing the emissions test w/ bottle of fuel injector cleaner? I am in a same situation...need to pass emission testing but the dam check engine light is on
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