How to clean the EGR valve?
- Thread starter enkrypt3d
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I'm pretty sure you cannot complete the emissions test with TCS on. Emissions testing requires that you operate at those speeds for sustained periods of time to gather all the measurements and also allow more data for a better average. I've tried to do it with TCS on and you can only hold speed maybe 5 seconds before it stumbles and you are outside the speed zone. Basically, it's nearly impossible maintain the testing speeds. But if they don't know how to turn off TCS, they might be forced to do it off of the dyno and just measure specific RPM. Not sure if it's state by state. That is what happens in Canada.
BTW, the RXP stuff is supposed to increase emissions as it's burning off all the carbon deposits, etc. So it will actually spike before it gradually declines. Run a full tank and maybe even another tank before going back, unless that is what you did... but based on the fact that you posted your results 4 hours after posting that you ordered RXP, maybe not...
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No I haven't received the RXP yet... the first smog test was with just premium gas from chevron and the 2nd was with some octane booster which didn't make much difference... I think I'm just going to go with the denatured alcohol......
and based on this link, yea i agree you can run it 30 min after or for best results, run a whole tank of gas thru it first....
http://www.rxp.com/instruct.htm
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Well, don't give up on the RXP. Run a tank of that so it cleans out as much of the carbon deposits as possible, the use the denatured alcohol and get another test.
Stay away from any kind of octane boost and only run 91 Octane from a high throughput (busy) station. Raising the octane will make it more difficult to ignite complete burns. 91 should work best. RXP might be able to clean things up and restore your O2 / Cats, etc back to OEM spec... hopefully! Best of luck man.
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yea i gotta get all this done before the 18th... so I guess I should plan a road trip or something haha
The timing was something they should have checked during the smog test. I doubt it was off if it hasn't been messed with, and if you change it much from where it's supposed to be you'll probably fail on the retest, since they should check the timing again. I don't see any benefit here. Spark timing would probably have to be waaaay late to affect emission #s, and power would be waaaay down.
Post up your new numbers with the RXP, pass or fail. I'm curious on how it'll affect things.
Post up your new numbers with the RXP, pass or fail. I'm curious on how it'll affect things.
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The tech did not plug the car into the smog machine... so no the timing was not checked...... the OBDII computer did not talk directly to the system. This guy barely spoke English so I was trying to explain it to him.. he just shrugged it off.
Should I make sure its plugged in or just let them do it their way next time?
It won't affect your smog #s either way. I'm not sure if they're required to take the reading with a light on the balancer the old fashioned way, or if they can accept what the ECU *thinks* is the base timing. For that matter, I'm not sure an OBDII NSX has the same timing adjustment as what's shown for '91. Did he use an inductive sensor for the RPMs?
Just to clarify my last post, making the timing way off would affect the #s by making them worse. Stock spark timing is good for emissions.
Just to clarify my last post, making the timing way off would affect the #s by making them worse. Stock spark timing is good for emissions.
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SIGH so there's really no way to know if my cats are in the right temp then....... everyone says to make sure they are blazing hot, and now u say to make sure its not too hot.... :frown: I plan on buying a Scan Gauge this week... and I'm also taking the car to the dealership to see what they say...$110 for them to just look at it ......arrrrg sigh.....:frown:
Noticed you are selling OEM cats on the market place... Why don't you install the OEM cats then you can eliminate whether the high flow cats are the culprit....
Unless the OEM cats are no good....
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Those oem cats were giving me a check engine light.... so no its not gonna pass smog.
Yea all he did was place this thing above the gauge cluster to read the RPMs..... that was it ...
I just smog my car yesterday, and failed on the 25mph NO only. All others number very low. Tech said it was EGR valve.
Danny
Danny
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So I contacted Honda Customer Relations since the dealership is not willing to honor the extended emissions warranty unless there is a check engine light...
So Honda wants me to go to a 3rd party smog repair shop to get a recommendation on what to replace / fix to make my car pass.... This would cost me $200 which Honda has offered to see if they can reimburse me if it is approved... SIGH this is so freaking irritating...
I even tried the denatured alcohol which made the NOX / HC and CO extremely high... so no that didn't work... back to square one....
:frown::frown:
So Honda wants me to go to a 3rd party smog repair shop to get a recommendation on what to replace / fix to make my car pass.... This would cost me $200 which Honda has offered to see if they can reimburse me if it is approved... SIGH this is so freaking irritating...
I even tried the denatured alcohol which made the NOX / HC and CO extremely high... so no that didn't work... back to square one....
:frown::frown:
+1 I just passed smog after initially failing. I used RxP and Lucas Fuel treatment with a 1/2 tank of gas.
Where did you take it? Avoid the one @ Saviers and Bard. The shop at Pleasant Valley & Saviers knows what he's doing and has new equipment.
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#s? Better, worse, same?
At least you have OBDII. I need to smog my truck next month and it's OBDI. It's always borderline fail, and the pass limit is lower now than last time. I've deduced that the ECM isn't turning the EGR on, but I haven't figured out why yet. If I can't figure it out I'll have to find a Dodge DRB2 scanner somewhere.
At least you have OBDII. I need to smog my truck next month and it's OBDI. It's always borderline fail, and the pass limit is lower now than last time. I've deduced that the ECM isn't turning the EGR on, but I haven't figured out why yet. If I can't figure it out I'll have to find a Dodge DRB2 scanner somewhere.
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NOX is 1495 (MUCH worse than before)
HC was really high too
and so was CO...
so this was a step in the WRONG direction..... this is so fking frustrating...
You haven't resorted to simply bribing the smog check guy yet?
What kind of mods do you have on your car other than the exhaust and HFC? What is the mileage?
It is unusual to fail without other mods... but I'd bet that it would be fine if you use a set of working OEM cat.
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im using brand new random tech cats which are CARB certified and should pass CA smog tests... the car has 86K miles...
I am going to replace the spark plugs since I have an extra set... and maybe the o2 sensors ....... I think its BS that honda is unwilling to help me here even though my car is covered under the extended emissions warranty... :frown:
I failed WITH RXP
...sorry to hear that...
Maybe someone can help you pass by sending you a p.m.
So I contacted Honda Customer Relations since the dealership is not willing to honor the extended emissions warranty unless there is a check engine light...
So Honda wants me to go to a 3rd party smog repair shop to get a recommendation on what to replace / fix to make my car pass.... This would cost me $200 which Honda has offered to see if they can reimburse me if it is approved... SIGH this is so freaking irritating...
I even tried the denatured alcohol which made the NOX / HC and CO extremely high... so no that didn't work... back to square one....
With all the aggravation and stress, maybe it is time to take this option. I am sure you have spent more than $200 by now and many gray hair....
The cats may be CARB approved, but they are not OEM. Warranties are often voided when aftermarket parts are used. Since the old cats gave you a CEL, put them back on. That said, I believe the extended warranty was for 14 years. If that's the case, and if you're beyond that point, then anything Honda does for you is goodwill.
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That appears to be the next logical step... hope you have not sold your OEM cats.
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