Check Engine Light - Tried everything, double check my install?

**Yodums** · 08-03-2006, 08:55 PM

I installed my AEM CAI on my R18 two nights ago. Everything seemed fine that night - no problems and no check engine light. It wasn't till this morning that I noticed the CEL came on shortly after I had pulled out of the garage. By shortly, I mean like 0.1 km. I was originally going to pickup my contacts but I figured that could wait so I backed up into the garage and disconnected the negative terminal of the battery, let it sit for 30 minutes and then started it up and let it idle for 15 minutes. At no point in time did I move the car or even come near the gas pedal. I then drove to the store and parked my car (turned it off completely) so I can pickup my contacts. There was no signs of a CEL on the way there. Once I had got in the car again, it came up again. Fine, I figured this time I will disconnect the battery before I take a nap (2 hours), come back, let it idle completely OUTSIDE for 20 minutes but after driving, it came back again.

Any ideas here? I REALLY don't want to put the stock air box in because of something as stupid as a CEL!

Kurt · 08-03-2006, 09:01 PM

Same thing with me. I've tried everything.

**Yodums** · 08-03-2006, 09:19 PM

Hey Kurt, any more details? What kind of CAI do you have and approximately how long after you reset your ECU does the CEL come on?

***rippars*** · 08-03-2006, 09:26 PM

the cel came one twice when i had my aem cai on my ex coupe. the first time (a day after i installed it) i disconnected the battery and let it idle for a few minutes. couple of days later it came on again and i let it idle for ten minutes, later that weekend i took it for a road trip and drove the car like i normally would and never had a problem after that. just drive the car the way you normally would and just keep disconnecting the battery and let it idle. maf sensor isnt use to all of the extra air flowing in but it will get use to the new settings eventually…

***rippars*** · 08-03-2006, 09:28 PM

Quote:

Originally Posted by Kurt

Same thing with me. I've tried everything.

hey dont you work at a honda dealership? why dont you just have them reset your ecu?

**Yodums** · 08-03-2006, 09:35 PM

Quote:

Originally Posted by rippars

the cel came one twice when i had my aem cai on my ex coupe. the first time (a day after i installed it) i disconnected the battery and let it idle for a few minutes. couple of days later it came on again and i let it idle for ten minutes, later that weekend i took it for a rode trip and drove the car like i normally would and never had a problem after that. just drive the car the way you normally would and just keep disconnecting the battery and let it idle. maf sensor isnt use to all of the extra air flowing in but it will get use to the new settings eventually…

Hmm, I'll keep driving it and see what happens. I hope it works because it's a really tedious process to keep disconnecting and letting the car just idle. I look crazy when I have two sets of keys, start my car and lock the original keys in there!

lexusguy · 08-03-2006, 09:44 PM

you have to reprogram the maf sensor,thing is if you do it at the dealership it might void your warranty

Kurt · 08-03-2006, 11:09 PM

Quote:

Originally Posted by rippars

hey dont you work at a honda dealership? why dont you just have them reset your ecu?

Well I had the code cleared but it came back 3 days later.

I'll see tomorrow about resetting the ecu - I'm putting in my 65 shot and hopefully the Si suspension I got for free :) so tomorrow i'll be busy as hell

***rippars*** · 08-03-2006, 11:22 PM

the only other thing i could think of is to check your hoses and clamps and that their all on correctly and held together tight.

***CaliGuy*** · 08-03-2006, 11:31 PM

Quote:

Originally Posted by rippars

the only other thing i could think of is to check your hoses and clamps and that their all on correctly and held together tight.

I agree. Try disconnecting the battery for like 2-3 hours and then letting it idle for 15-20 minutes without hitting the gas. Then turn the car off. Then try it and see if that works.

Thats my .02 worth a try at least...

**Yodums** · 08-07-2006, 12:47 PM

Hey Kurt, do you still have the light after the installation of your new mods?

Well, I'm still getting it and it's gotten to the point beyond annoying that I don't even care about it, however, I'd still like to remove that shit.

I've tried resetting the ECU by disconnecting the battery and letting it idle and driving it really conservatively for the first 50km but that didn't seem to work. When it hit 58.4km, the damn light went on.

I had someone use a scanner last Friday but the light still came on, any thoughts?

I know for sure it's the MAF sensor. I'm not sure why it's coming up like that though... I remember forgetting to plug in the MAF after a reset and the CEL came on immediately. Then I resetted the ECU, plugged the MAF back in and it didn't come on till those 58.4 km... something funky is going on.

***[IVI]*** · 08-07-2006, 01:08 PM

Did you check the gas cap to make sure it's on tight?

**Yodums** · 08-07-2006, 01:15 PM

Yep, I've double check that. I needed gas anyways so I went to fill up gas and made sure the gas cap was tight before attempting to reset the ECU.

Hmmmmmm, this one sure has got me cornered.

aznives3 · 08-07-2006, 03:00 PM

It seems like more people are having problems with the aem intake. In my opinion you should have went with the Injen, it seems like they spent more time R&D than aem did concerning the air flow sensor, as the injen intake uses their "MR" technology......good luck with your problem! Hopefully you can get it figured out, since aem does have a pretty good reputation and all the good colored intakes

**Yodums** · 08-07-2006, 04:02 PM

Quote:

Originally Posted by aznives3

It seems like more people are having problems with the aem intake. In my opinion you should have went with the Injen, it seems like they spent more time R&D than aem did concerning the air flow sensor, as the injen intake uses their "MR" technology......good luck with your problem! Hopefully you can get it figured out, since aem does have a pretty good reputation and all the good colored intakes

Yep. I'm definitely smacking myself on the head for going with an AEM.

Ah well. I'll see what I can do, but I've pretty much pinpointed the problem to the MAF.

Kurt · 08-07-2006, 05:22 PM

Yep, my light is on right now.

I would turn it off by disconnecting the battery.. but then it'd probably reset my learned nitrous programming.

Sooo annoying. Stupid AEM.

Have you tried emailing them? I'm going to do that right now.

**Yodums** · 08-07-2006, 07:42 PM

Nope, I haven't. I'll take your suggestion though.

Kurt · 08-07-2006, 07:48 PM

I couldn't find an email address on their website. wtf.

cojaro · 08-07-2006, 07:53 PM

Make sure all your clamps are on tight, and that everything is in place as it should be. I let it idle for the second time (first didn't get rid of CEL) a few days after installing and it went away.

tomasro · 08-07-2006, 08:36 PM

Solution: Get an Injen CAI...sell your AEM on ebay.

08-03-2006, 08:55 PM	#1 (permalink)
Yodums Scrodums Join Date: May 2006 Location: Ottawa, Canada Posts: 8,240 Hiro Nakamura iTrader: 9 / 100%	Check Engine Light - Tried everything, double check my install? I installed my AEM CAI on my R18 two nights ago. Everything seemed fine that night - no problems and no check engine light. It wasn't till this morning that I noticed the CEL came on shortly after I had pulled out of the garage. By shortly, I mean like 0.1 km. I was originally going to pickup my contacts but I figured that could wait so I backed up into the garage and disconnected the negative terminal of the battery, let it sit for 30 minutes and then started it up and let it idle for 15 minutes. At no point in time did I move the car or even come near the gas pedal. I then drove to the store and parked my car (turned it off completely) so I can pickup my contacts. There was no signs of a CEL on the way there. Once I had got in the car again, it came up again. Fine, I figured this time I will disconnect the battery before I take a nap (2 hours), come back, let it idle completely OUTSIDE for 20 minutes but after driving, it came back again. Any ideas here? I REALLY don't want to put the stock air box in because of something as stupid as a CEL! __________________ 2007 Taffeta White Civic Si Coupe

08-03-2006, 09:19 PM	#3 (permalink)
Yodums Scrodums Join Date: May 2006 Location: Ottawa, Canada Posts: 8,240 Hiro Nakamura iTrader: 9 / 100%	Hey Kurt, any more details? What kind of CAI do you have and approximately how long after you reset your ECU does the CEL come on? __________________ 2007 Taffeta White Civic Si Coupe

08-07-2006, 12:47 PM	#11 (permalink)
Yodums Scrodums Join Date: May 2006 Location: Ottawa, Canada Posts: 8,240 Hiro Nakamura iTrader: 9 / 100%	Hey Kurt, do you still have the light after the installation of your new mods? Well, I'm still getting it and it's gotten to the point beyond annoying that I don't even care about it, however, I'd still like to remove that shit. I've tried resetting the ECU by disconnecting the battery and letting it idle and driving it really conservatively for the first 50km but that didn't seem to work. When it hit 58.4km, the damn light went on. I had someone use a scanner last Friday but the light still came on, any thoughts? I know for sure it's the MAF sensor. I'm not sure why it's coming up like that though... I remember forgetting to plug in the MAF after a reset and the CEL came on immediately. Then I resetted the ECU, plugged the MAF back in and it didn't come on till those 58.4 km... something funky is going on. __________________ 2007 Taffeta White Civic Si Coupe

08-07-2006, 01:15 PM	#13 (permalink)
Yodums Scrodums Join Date: May 2006 Location: Ottawa, Canada Posts: 8,240 Hiro Nakamura iTrader: 9 / 100%	Yep, I've double check that. I needed gas anyways so I went to fill up gas and made sure the gas cap was tight before attempting to reset the ECU. Hmmmmmm, this one sure has got me cornered. __________________ 2007 Taffeta White Civic Si Coupe

08-07-2006, 07:42 PM	#17 (permalink)
Yodums Scrodums Join Date: May 2006 Location: Ottawa, Canada Posts: 8,240 Hiro Nakamura iTrader: 9 / 100%	Nope, I haven't. I'll take your suggestion though. __________________ 2007 Taffeta White Civic Si Coupe

08-03-2006, 09:01 PM	#2 (permalink)
Kurt Senior Member Join Date: Dec 2005 Age: 22 Posts: 3,938 iTrader: 2 / 100%	Same thing with me. I've tried everything.

08-03-2006, 09:44 PM	#7 (permalink)
lexusguy Senior Member Join Date: Feb 2006 Age: 27 Posts: 153 iTrader: 1 / 100%	you have to reprogram the maf sensor,thing is if you do it at the dealership it might void your warranty

08-07-2006, 01:08 PM	#12 (permalink)
*[IVI]* I'm your Huckleberry Join Date: May 2006 Location: Columbus, Ohio Age: 31 Posts: 1,636 Bryan iTrader: 0 / 0%	Did you check the gas cap to make sure it's on tight?

08-07-2006, 03:00 PM	#14 (permalink)
aznives3 Senior Member Join Date: Nov 2005 Location: Edmonton, Alberta Age: 20 Posts: 538 iTrader: 1 / 100%	It seems like more people are having problems with the aem intake. In my opinion you should have went with the Injen, it seems like they spent more time R&D than aem did concerning the air flow sensor, as the injen intake uses their "MR" technology......good luck with your problem! Hopefully you can get it figured out, since aem does have a pretty good reputation and all the good colored intakes

08-07-2006, 05:22 PM	#16 (permalink)
Kurt Senior Member Join Date: Dec 2005 Age: 22 Posts: 3,938 iTrader: 2 / 100%	Yep, my light is on right now. I would turn it off by disconnecting the battery.. but then it'd probably reset my learned nitrous programming. Sooo annoying. Stupid AEM. Have you tried emailing them? I'm going to do that right now.

08-07-2006, 07:48 PM	#18 (permalink)
Kurt Senior Member Join Date: Dec 2005 Age: 22 Posts: 3,938 iTrader: 2 / 100%	I couldn't find an email address on their website. wtf.

08-07-2006, 07:53 PM	#19 (permalink)
cojaro Senior Member Join Date: Mar 2006 Location: Memphis Age: 20 Posts: 1,218 iTrader: 1 / 100%	Make sure all your clamps are on tight, and that everything is in place as it should be. I let it idle for the second time (first didn't get rid of CEL) a few days after installing and it went away.

08-07-2006, 08:36 PM	#20 (permalink)
tomasro Senior Member Join Date: Aug 2005 Location: San Carlos, CA Age: 25 Posts: 1,502 Turner iTrader: 2 / 100%	Solution: Get an Injen CAI...sell your AEM on ebay.

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