Engine check engine light on few days after AEM cold air intake installed

rakuten · 15th December 2011, 12:04

hi guys,

I got AEM cold air intake installed last friday, and my check engine light on while yesterday's driving back home, I only did less than 40 miles since it installed last friday. can you advice any possiable faults regarding to the aftermarket cold air intake please, thanks

rakuten · 15th December 2011, 12:28

btw, i got it serviced at the same time while installed the AEM intake, changed engine oil, spark plug n oil filter, but i dont think these can cause the problem

coste1l · 15th December 2011, 12:29

try resetting see if it comes back?

rakuten · 15th December 2011, 12:34

u mean disconnect the battery n c if it coming back? i will call aa n get a error code around lunchtime to see which part it fails on, i think possiablly intake and o2 sensor maybe

Quote:

Originally Posted by coste1l

try resetting see if it comes back?

coste1l · 15th December 2011, 12:51

probably best!

rakuten · 15th December 2011, 13:40

does anyone know if i need to do a ecu remapping or something?

thesilverfox13 · 10th February 2012, 00:36

I had the same problem. As your new intake draws in more air, the ecu tells the engine to pull in more fuel, which can result in overfuelling, if you have to stop quickly, after some sharp acceleration, such as at lights or a junction. As long as the light goes out again, after a few miles, shouldn't be a problem. Need to adjust your right foot a bit!

Nick7 · 10th February 2012, 16:20

It's not about 'drawing more air'.
Difference is extremely low.
However, what DOES make difference is you disturb resonance frequency of air (due to different intake length), and this can affect reading of MAF sensor - which it does.

Jonnyrocket · 10th February 2012, 16:59

Quote:

Originally Posted by Nick7

It's not about 'drawing more air'.
Difference is extremely low.
However, what DOES make difference is you disturb resonance frequency of air (due to different intake length), and this can affect reading of MAF sensor - which it does.

I fitted the AEM to my R18 and its supplied with a Venturi to correct the MAF reading.

I'm not sure if yours comes with one, but if so check its been installed the right way round. It'd be an easy mistake and would throw up a warning light.

fat4y · 10th February 2012, 17:07

Bin it!!that or get it mapped accordingly

Ayepod · 23rd February 2012, 19:42

Im concerned for an injen cai coming in the post about this problem.
Even though the mass air flow sensor can be switched as i seen in a tutorial on another forum, can this problem still arise? If so how can i get around this somewhat annoying problem.

15th December 2011, 12:04	#1 (permalink)
rakuten Join Date: 19th November 2010 Location: aberdeen Posts: 69 Thanks given: 9 Thanked 0 Times in 0 Posts iTrader: (0)	check engine light on few days after AEM cold air intake installed hi guys, I got AEM cold air intake installed last friday, and my check engine light on while yesterday's driving back home, I only did less than 40 miles since it installed last friday. can you advice any possiable faults regarding to the aftermarket cold air intake please, thanks

10th February 2012, 00:36	#7 (permalink)
thesilverfox13 Car: Type R GT Join Date: 6th February 2011 Location: Barry Posts: 5 Thanks given: 1 Thanked 0 Times in 0 Posts iTrader: (0)	check engine light on few days after AEM cold air intake installed I had the same problem. As your new intake draws in more air, the ecu tells the engine to pull in more fuel, which can result in overfuelling, if you have to stop quickly, after some sharp acceleration, such as at lights or a junction. As long as the light goes out again, after a few miles, shouldn't be a problem. Need to adjust your right foot a bit! Last edited by thesilverfox13; 10th February 2012 at 00:37. Reason: spelling

23rd February 2012, 19:42	#11 (permalink)
Ayepod Car: FN1 Alabaster R18a2 Join Date: 19th February 2012 Location: Livingston Posts: 16 Thanks given: 0 Thanked 0 Times in 0 Posts iTrader: (0)	Im concerned for an injen cai coming in the post about this problem. Even though the mass air flow sensor can be switched as i seen in a tutorial on another forum, can this problem still arise? If so how can i get around this somewhat annoying problem. Last edited by Ayepod; 23rd February 2012 at 19:56.

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15th December 2011, 12:28	#2 (permalink)
rakuten Thread starter Join Date: 19th November 2010 Location: aberdeen Posts: 69 Thanks given: 9 Thanked 0 Times in 0 Posts iTrader: (0)	btw, i got it serviced at the same time while installed the AEM intake, changed engine oil, spark plug n oil filter, but i dont think these can cause the problem

15th December 2011, 12:29	#3 (permalink)
coste1l Supporter Car: 09 Suzuki Swift Sport white Join Date: 16th January 2010 Location: Sunderland UK Posts: 13,180 Thanks given: 620 Thanked 1,180 Times in 1,133 Posts iTrader: (14)	try resetting see if it comes back?

15th December 2011, 12:51	#5 (permalink)
coste1l Supporter Car: 09 Suzuki Swift Sport white Join Date: 16th January 2010 Location: Sunderland UK Posts: 13,180 Thanks given: 620 Thanked 1,180 Times in 1,133 Posts iTrader: (14)	probably best!

15th December 2011, 13:40	#6 (permalink)
rakuten Thread starter Join Date: 19th November 2010 Location: aberdeen Posts: 69 Thanks given: 9 Thanked 0 Times in 0 Posts iTrader: (0)	does anyone know if i need to do a ecu remapping or something?

10th February 2012, 16:20	#8 (permalink)
Nick7 Supporter Join Date: 10th August 2006 Location: Croatia Posts: 713 Thanks given: 0 Thanked 14 Times in 13 Posts iTrader: (0)	It's not about 'drawing more air'. Difference is extremely low. However, what DOES make difference is you disturb resonance frequency of air (due to different intake length), and this can affect reading of MAF sensor - which it does.

10th February 2012, 17:07	#10 (permalink)
fat4y The Property Man Car: 2007 VW Beetle 1.6 Join Date: 7th November 2008 Location: Glasgow Posts: 5,848 Thanks given: 21 Thanked 323 Times in 319 Posts iTrader: (6)	Bin it!!that or get it mapped accordingly