A friend of mine (member) and I installed an AEM CAI on his 96 4cyl accord ex. On the stock piping there was a sensor and on that same clip there were 3 vacuum type lines (some may have been coolant, but I doubt it). We took the clip with all of this stuff off, but left everything connected and just put it under the CAI. Now his car gets shitty mileage. Any ideas? What did this sensor do? Only one of the vacuum lines could not remain hooked up, what did it do? Hope this makes sense, Im looking for a picture now..

Mike

 

I'm not sure what sensor that was but you might want to hook it back up. That and pull the ecu fuse for 30 seconds. That'll reset the ecu and make it reconfigure the air/fuel ratio.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by riceburner247 &raquo;</TD></TR><TR><TD CLASS="quote">I'm not sure what sensor that was but you might want to hook it back up. That and pull the ecu fuse for 30 seconds. That'll reset the ecu and make it reconfigure the air/fuel ratio.</TD></TR></TABLE>
Where is the ECU fuse normally on a car?

 

i got better mpg with my aem cai on the same engine

 

If you don't know where your ECU is you probably should not be messing with it.

Try disconnecting the batter wires for a bit, then reconnect and drive for a bit. Worked for me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by riceburner247 &raquo;</TD></TR><TR><TD CLASS="quote">I'm not sure what sensor that was but you might want to hook it back up. That and pull the ecu fuse for 30 seconds. That'll reset the ecu and make it reconfigure the air/fuel ratio.</TD></TR></TABLE>

yea....i REALLY need to do that being since i installed my CAI 4 months ago.....im currently sitting on 140 miles and tank is almost to E on meter (though sending unit might be bad as well)......i never recet the ECU after the install &lt;= newb mistake......i dont think the sensors/vacume lines are that important......the line coming off the valve cover just needs a foam filter (included with CAI) and another, very long thin line that runs across the firewall to the right side of the bay just has to be plugged with the supplied nipple

 

one thing i've noticed with people that install intake and get bad gas milage....STOP FLOORING IT!!

i bet 99% of the reason most people get bad gas milage from intake is so that they can hear it. another thing, if its a 96 accord...i believe thats OBD2, not sure, but that might have something to do with it. OBD2 cars dont take mods as kindly as an OBD1 car.

as for ECU, i think after awhile, the ECU will reconfigure itself, or you could just pull the fuse and battery cable for a minute or two, and that might do it too.

 

people arent that retarded......personaly i RARELY floor it, even when i rev her up....i dont matter what mods uve done, when u floor it, u spew tons of gas into the cylinder, thats just common sense.....i dont think the ECU will neccesarily reset itself, in fact it may adjust itself to have a negative affect on gas milege (looping??)......you should also make sure the plugs/dist cap/02 sensor(s) are all good

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by STARRMAN85 &raquo;</TD></TR><TR><TD CLASS="quote">one thing i've noticed with people that install intake and get bad gas milage....STOP FLOORING IT!!

i bet 99% of the reason most people get bad gas milage from intake is so that they can hear it. another thing, if its a 96 accord...i believe thats OBD2, not sure, but that might have something to do with it. OBD2 cars dont take mods as kindly as an OBD1 car.

as for ECU, i think after awhile, the ECU will reconfigure itself, or you could just pull the fuse and battery cable for a minute or two, and that might do it too.</TD></TR></TABLE>
I drove normally when I had a short ram and I LOST mileage up the ***.
When I drove like an animal it got more towards normal.

 

Turns out mileage was ok and it was just him being paranoid. Still not sure what the sensor is, though. Its front psss side by the batt kind of...

BTW: We put his header on, damn thats noticable!

 

make sure the black rubber vacuum lines are re-connected, even if means zip-tying them to something. you can by the lines at auto parts stores by the foot, if you need to run new ones.

 

Ok that sensor it the air resonator sensor. Just ziptie it somewere under your intake. Leave all the vacum hoses hooked up to it like normal. There should be 1 hose that went to the air resonator under your stock intake. Just plug that vacum hose off. Then reset ecu and everything will be perfect.Make sure the sensor is still plugged in. This sensor is only on the accord ex bc it does something for vtec i guess. I hoped this helped.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by matix &raquo;</TD></TR><TR><TD CLASS="quote">Ok that sensor it the air resonator sensor. Just ziptie it somewere under your intake. Leave all the vacum hoses hooked up to it like normal. There should be 1 hose that went to the air resonator under your stock intake. Just plug that vacum hose off. Then reset ecu and everything will be perfect.Make sure the sensor is still plugged in. This sensor is only on the accord ex bc it does something for vtec i guess. I hoped this helped. </TD></TR></TABLE>

Thank you sir!

 

wiat...so that sensor that sits underneath the stock hose needs to be plugged in???.....does the unit its plugged into have to be functioing??....mines unplugged, and the unit is somewhere in my garage rafters......

 

I worked for HOnda dealership and they reset ECUs almost after every tune-up. Resetting the ECU ISN"T something that requires a physics degree. All you have to do is disconnect the radio fuse under your hood and wait for a couple of minutes. Or what i do and most people do this also is, disconnect the negative battery cable to the battery and then locate the ECU (for 94-97 this is under the glove compartment in the right hand corner. What you have to do is take the door sill off by just yanking it, then you take a flat head or your hands and pop the plastic cover in the corner. YOur ECU should be under that. (ANd if its not......Then i don't know how your car is working ...) THen you are going to unplug both of those orange harnesses that hook up to the ECU. Give that a couple of mins along with the negative cable unhooked. THat should do it. I had the same problem with my car after installing my AEM CAI. It's just that the ECU didn't recognize the new adjustments it had to make. You should also do this when you switch from 87 gas to 93 octane. If you switch it to 93 octane for just a night you feel like racing then reset the ECU, it'll learn the new gas and adjust what needs to be. ANother thing is that some people do gain a couple pounds to the right foot (lol) when adding on a new mod. They "tend" to "emphasize" on it more

 

so by pulling the fuse for the radio it will reset the ECU???.....cause getting at the ECU can be a bitch sometimes.....

i know this is always a recent topic and thats its been beat to death but: the wire that plug into a black box undernearth the intake (the wires all route to a green connection switch which then goes to that box), does that need to pe re-hooked up to the black box, and then u just zip tie the box to the frame???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by charli3brown3 &raquo;</TD></TR><TR><TD CLASS="quote">I worked for HOnda dealership and they reset ECUs almost after every tune-up. Resetting the ECU ISN"T something that requires a physics degree. All you have to do is disconnect the radio fuse under your hood and wait for a couple of minutes. Or what i do and most people do this also is, disconnect the negative battery cable to the battery and then locate the ECU (for 94-97 this is under the glove compartment in the right hand corner. What you have to do is take the door sill off by just yanking it, then you take a flat head or your hands and pop the plastic cover in the corner. YOur ECU should be under that. (ANd if its not......Then i don't know how your car is working ...) THen you are going to unplug both of those orange harnesses that hook up to the ECU. Give that a couple of mins along with the negative cable unhooked. THat should do it. I had the same problem with my car after installing my AEM CAI. It's just that the ECU didn't recognize the new adjustments it had to make. You should also do this when you switch from 87 gas to 93 octane. If you switch it to 93 octane for just a night you feel like racing then reset the ECU, it'll learn the new gas and adjust what needs to be. ANother thing is that some people do gain a couple pounds to the right foot (lol) when adding on a new mod. They "tend" to "emphasize" on it more </TD></TR></TABLE>
So pulling the batt terminal is not enough?

 

Just pull battery terminals and make life easy. No need to pull radio fuse.

 

But if you pull the battery cable off, the car's electrical system may still retain some juice for it not to erase the memory in the ECU. So, best bet is to pull the "Back-up" fuse for about a minute or to leave the battery disconnected for about 30 minutes. I use either depending on which car. The "Back-up" fuse IS faster.

 

reset ecu by unplugging neg battery terminal for 10 seconds
make sure all the plugs are on the correct sensors
make sure the vaccum hose from the intake pipe is connected to the valve cover hole

make sure the IM hose to pcv valve is tight and not being collapsed
make sure intake pipe has tighted clamps on the tb and filter side

this is all common stuff just keep looking the **** over u obviously did something incorrect...good luck

 

ok......i think everyone is really confused now....will sum 1 with a dig camera post a pic of an engine bay with an AEM CAI and point out to make sure that all the hoses and conected/plugged in right......



Modified by fw190bvi at 2:48 PM 3/10/2004