Egr?
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Egr?
i was looking through my text book the other day, and came upon a picture of a EGR valve on a GM vehicle...
so i remembered someone whol told me we had a VTEC controller, and that controller looked a bit like that.. and low and behold...
i think that is maybe a egr valve, and not a vtec controller like others claimed.... any ideas?
so i remembered someone whol told me we had a VTEC controller, and that controller looked a bit like that.. and low and behold...
i think that is maybe a egr valve, and not a vtec controller like others claimed.... any ideas?
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Rep Power: 367 oh man whoever said that was the VTEC solenoid... *smack*
its weird but last I check I dont think the DX/LX have it. probably due to the fact that the DX/LX cat is right near the exhaust manifold, and it probably puts out less emission than the EX.
yeah the EGR valve is the Exhaust Gas Recirculation system's main emission control unit. basically it allows a part of the exhaust emission from the exhaust manifold to go back to the intake manifold. I believe it's usually located near the intake manifold.. but in our case.. its between them.
so in a sense it does have to do with temperature.. cuz by recirculating, it reduces combustion temp. and helps control the amount of oxides of nitrogen.
I believe the 98-02 Accords have some problems with these.. and quite a few people had to replace the EGR valve.
and that's that. another modern vehicle emission control component.
stuff that'll keep our children to come happy.
its weird but last I check I dont think the DX/LX have it. probably due to the fact that the DX/LX cat is right near the exhaust manifold, and it probably puts out less emission than the EX.
yeah the EGR valve is the Exhaust Gas Recirculation system's main emission control unit. basically it allows a part of the exhaust emission from the exhaust manifold to go back to the intake manifold. I believe it's usually located near the intake manifold.. but in our case.. its between them.
so in a sense it does have to do with temperature.. cuz by recirculating, it reduces combustion temp. and helps control the amount of oxides of nitrogen.
I believe the 98-02 Accords have some problems with these.. and quite a few people had to replace the EGR valve.
and that's that. another modern vehicle emission control component.
stuff that'll keep our children to come happy.
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Rep Power: 367 the amount it saves in emission compare to the amount it eats away in performance isn't worth not having it, IMO.
its a small amount.
a malfunction egr valve will easily reduce engine power.. so its not easy to just remove it and call it a day... there's plenty of sensors to mess with too.
if you dont remove it properly, you'll end up losing power.
like the PCV, the benefit of it in reducing emission is more than the small amount of performance it takes away.
its a small amount.
a malfunction egr valve will easily reduce engine power.. so its not easy to just remove it and call it a day... there's plenty of sensors to mess with too.
if you dont remove it properly, you'll end up losing power.
like the PCV, the benefit of it in reducing emission is more than the small amount of performance it takes away.
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Rep Power: 0 if you remove it, the check engine light will most likely come on, the egr actually cools the combustion chamber, because it doesn't combust as hot. and if you remove it, i don't know what happen to close-loop and open-loop.... and would the cpu go wacky from losing close loop
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Rep Power: 0 CapYoda, you gotta change your Avatar, its killin me. Every time I read your response I picture Conan reading it to me. Its hilarious as hell.
Nah, keep it, just funny as hell is all
Nah, keep it, just funny as hell is all
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Rep Power: 0 Originally posted by Voiceofid
if you remove it, the check engine light will most likely come on, the egr actually cools the combustion chamber, because it doesn't combust as hot. and if you remove it, i don't know what happen to close-loop and open-loop.... and would the cpu go wacky from losing close loop
if you remove it, the check engine light will most likely come on, the egr actually cools the combustion chamber, because it doesn't combust as hot. and if you remove it, i don't know what happen to close-loop and open-loop.... and would the cpu go wacky from losing close loop
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Rep Power: 418 Nope. It's probably just not there. It would be in the same place if it was. The LX probably doesn't need one since it has the cat so close to the header. It burns away and filters more of the harmful crap than the EX does. Well, maybe not more. More than the EX's cat setup though.
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Rep Power: 0 Originally posted by Grey
Nope. It's probably just not there. It would be in the same place if it was. The LX probably doesn't need one since it has the cat so close to the header. It burns away and filters more of the harmful crap than the EX does. Well, maybe not more. More than the EX's cat setup though.
Nope. It's probably just not there. It would be in the same place if it was. The LX probably doesn't need one since it has the cat so close to the header. It burns away and filters more of the harmful crap than the EX does. Well, maybe not more. More than the EX's cat setup though.
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Rep Power: 0 but.. wont that mean the car burns more gas, and runs a lot hotter than normal, since it constantly running in open loop. the changing the lx to ex exhaust should also mean it would throw a check engine light, since the o2 contents is different and tempature of the gasses have changed?
i could be wrong but that big black wire coming from the top of it looks like its going to the spark plugs. could it be the ignition coil pack? because it doesnt seem like the spark plugs are gettin their juice anyother way.
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Rep Power: 367 Originally posted by Voiceofid
but.. wont that mean the car burns more gas, and runs a lot hotter than normal, since it constantly running in open loop. the changing the lx to ex exhaust should also mean it would throw a check engine light, since the o2 contents is different and tempature of the gasses have changed?
but.. wont that mean the car burns more gas, and runs a lot hotter than normal, since it constantly running in open loop. the changing the lx to ex exhaust should also mean it would throw a check engine light, since the o2 contents is different and tempature of the gasses have changed?
I never really thought about that... i figure if they swap the entire system to ex, namly.. even the stock EX cat convertor.. and extend the o2 sensors.. then they're good to go.
but perhaps not.
then again, the amount of exhaust loop back into the engine isn't that much to begin with. no? its not like in the ex, the EGR valve is constantly open anyway.. although I'm not really sure what are the condition for the valves to open and start circulating exhaust back...
perhaps an o2 sim will do the trick.. although I wonder about that too... most cars are different emission level.. and the amount of o2 and temp is different too... so how does a universal o2 simulator work in that. heh. there isn't a universal o2 spec is there?
Originally posted by bluericeburna2k2
i could be wrong but that big black wire coming from the top of it looks like its going to the spark plugs. could it be the ignition coil pack? because it doesnt seem like the spark plugs are gettin their juice anyother way.
i could be wrong but that big black wire coming from the top of it looks like its going to the spark plugs. could it be the ignition coil pack? because it doesnt seem like the spark plugs are gettin their juice anyother way.
if u remove the ignition coil cover you'll see where its coming from.
plus in the first pic, do u see the wire coming out of the ignition coil cover? right above the very wire going into the cover? thats where its coming from.
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Rep Power: 0 Originally posted by CapYoda
thats a good point.
I never really thought about that... i figure if they swap the entire system to ex, namly.. even the stock EX cat convertor.. and extend the o2 sensors.. then they're good to go.
but perhaps not.
then again, the amount of exhaust loop back into the engine isn't that much to begin with. no? its not like in the ex, the EGR valve is constantly open anyway.. although I'm not really sure what are the condition for the valves to open and start circulating exhaust back...
perhaps an o2 sim will do the trick.. although I wonder about that too... most cars are different emission level.. and the amount of o2 and temp is different too... so how does a universal o2 simulator work in that. heh. there isn't a universal o2 spec is there?
thats a good point.
I never really thought about that... i figure if they swap the entire system to ex, namly.. even the stock EX cat convertor.. and extend the o2 sensors.. then they're good to go.
but perhaps not.
then again, the amount of exhaust loop back into the engine isn't that much to begin with. no? its not like in the ex, the EGR valve is constantly open anyway.. although I'm not really sure what are the condition for the valves to open and start circulating exhaust back...
perhaps an o2 sim will do the trick.. although I wonder about that too... most cars are different emission level.. and the amount of o2 and temp is different too... so how does a universal o2 simulator work in that. heh. there isn't a universal o2 spec is there?
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Rep Power: 0 A properly working EGR system will not reduce horsepower or performance, but on older cars like my 1990 Mustang GT, the EGR is controlled by vacuum, and just a small reduction in vacuum can reduce performance.
A EGR valve recycles exhaust gas back into the combustion chamber and "re-burns" it, if you remove the EGR valve you'll get some serious ping and knock because the cylinder is hotter.
I have changed my EGR twice on my Mustang, and I know when its going bad because the ping starts and performance drops.
EDIT:spellin
A EGR valve recycles exhaust gas back into the combustion chamber and "re-burns" it, if you remove the EGR valve you'll get some serious ping and knock because the cylinder is hotter.
I have changed my EGR twice on my Mustang, and I know when its going bad because the ping starts and performance drops.
EDIT:spellin
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