just put in cold air. Need help - Toyota Yaris Forums

Niko · 02-15-2009, 11:03 PM

I just put an intake in my yaris. it is a 2008 sedan. when i am driving my check engine light turns on, is there something i can do? i treid unplugging the negitive battery cable and it turns it off but afterwords when i drive for a minute the light turns back on. Also when i am driving the car shifts late.

Tamago · 02-15-2009, 11:05 PM

sounds like you forgot to plug something in. double check your hoses and plugs

Niko · 02-15-2009, 11:12 PM

i checked over it everything seems to be fine. my dad said that i might need i different mass airflow sensor????

Niko · 02-15-2009, 11:13 PM

would it do that if there was a leak in the tube?

PetersRedYaris · 02-15-2009, 11:14 PM

Quote:

Originally Posted by Niko

would it do that if there was a leak in the tube?

Yes... Also, is the intake tube the correct diameter?

Niko · 02-15-2009, 11:21 PM

the tube i put on is a three inch tube. the original tubeing was i think a two

mikenacarato · 02-15-2009, 11:22 PM

thats the issue. the maf housing you used it too large.

Niko · 02-15-2009, 11:32 PM

so i should move to a two inch intake?

Tamago · 02-15-2009, 11:33 PM

would that cause a CEL so quickly?

Niko · 02-15-2009, 11:34 PM

? i dont understand?

Tamago · 02-15-2009, 11:40 PM

mass airflow sensor works by "measuring" the velocity and temperature of air that passes past the sensor. if you change from a 2" to a 3" pipe the MAF measures X amount of air and is actually receiving 30% more air. not sure that it would cause a CEL that quickly that's why i asked if you'd wired everything correctly.

LtNoogie · 02-16-2009, 01:04 AM

Quote:

Originally Posted by Tamago

mass airflow sensor works by "measuring" the velocity and temperature of air that passes past the sensor. if you change from a 2" to a 3" pipe the MAF measures X amount of air and is actually receiving 30% more air. not sure that it would cause a CEL that quickly that's why i asked if you'd wired everything correctly.

Since the tube is wider, I assume that the same amount of air that the engine consumes is moving slower past the MAF sensor. That may skew the temperature that is being sensed.

Niko · 02-16-2009, 03:13 AM

well i went to check like you said and i found that it was a number of air leaks that were causing the sensor to not read correctly. I used a sealent to fix the leaks and just got back from i two hour drive and the car ran great and no check engine light.

Niko · 02-16-2009, 03:15 AM

thanks for the info guys. i really have no where else to go to get help for my yaris because my family is an american car family.

mikenacarato · 02-16-2009, 03:35 AM

the tube size is wrong. ive tried doing the same thing on my car before i got the trd intake. the car would barley idle and it threw a CEL almost immediately.

CASTREX · 02-16-2009, 01:01 PM

If you get the CEl again you need to change to one of the many proven intakes out there.

AFE, AEM, Simota, Fujita, WR.

WeeYari · 02-16-2009, 01:07 PM

15 replies and nobody has yet asked "What CAI did you install?"

3 inch tube, I'm guessing ebay noname. With incorrect tube diameter you are definitely asking for a CEL to be thrown.

Yoda · 02-16-2009, 04:21 PM

lol THIS^^^^

02-15-2009, 11:03 PM	#1
Niko Drives: 2008 toyota yaris sedan Join Date: Feb 2009 Location: Magna, UT Posts: 10	just put in cold air. Need help I just put an intake in my yaris. it is a 2008 sedan. when i am driving my check engine light turns on, is there something i can do? i treid unplugging the negitive battery cable and it turns it off but afterwords when i drive for a minute the light turns back on. Also when i am driving the car shifts late.

02-16-2009, 01:07 PM	#17
WeeYari View User's Garage Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008 Location: Georgetown, Ontario, Canada Posts: 5,809	15 replies and nobody has yet asked "What CAI did you install?" 3 inch tube, I'm guessing ebay noname. With incorrect tube diameter you are definitely asking for a CEL to be thrown. __________________

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02-15-2009, 11:12 PM	#3
Niko Drives: 2008 toyota yaris sedan Join Date: Feb 2009 Location: Magna, UT Posts: 10	i checked over it everything seems to be fine. my dad said that i might need i different mass airflow sensor????

02-15-2009, 11:13 PM	#4
Niko Drives: 2008 toyota yaris sedan Join Date: Feb 2009 Location: Magna, UT Posts: 10	would it do that if there was a leak in the tube?

02-15-2009, 11:21 PM	#6
Niko Drives: 2008 toyota yaris sedan Join Date: Feb 2009 Location: Magna, UT Posts: 10	the tube i put on is a three inch tube. the original tubeing was i think a two

02-15-2009, 11:22 PM	#7
mikenacarato SIPNDEW View User's Garage Drives: 15 STI Join Date: Oct 2008 Location: Brentwood, TN Posts: 2,281	thats the issue. the maf housing you used it too large.

02-15-2009, 11:32 PM	#8
Niko Drives: 2008 toyota yaris sedan Join Date: Feb 2009 Location: Magna, UT Posts: 10	so i should move to a two inch intake?

02-15-2009, 11:34 PM	#10
Niko Drives: 2008 toyota yaris sedan Join Date: Feb 2009 Location: Magna, UT Posts: 10	? i dont understand?

02-16-2009, 03:13 AM	#13
Niko Drives: 2008 toyota yaris sedan Join Date: Feb 2009 Location: Magna, UT Posts: 10	well i went to check like you said and i found that it was a number of air leaks that were causing the sensor to not read correctly. I used a sealent to fix the leaks and just got back from i two hour drive and the car ran great and no check engine light.

02-16-2009, 03:15 AM	#14
Niko Drives: 2008 toyota yaris sedan Join Date: Feb 2009 Location: Magna, UT Posts: 10	thanks for the info guys. i really have no where else to go to get help for my yaris because my family is an american car family.

02-16-2009, 03:35 AM	#15
mikenacarato SIPNDEW View User's Garage Drives: 15 STI Join Date: Oct 2008 Location: Brentwood, TN Posts: 2,281	the tube size is wrong. ive tried doing the same thing on my car before i got the trd intake. the car would barley idle and it threw a CEL almost immediately.

02-16-2009, 01:01 PM	#16
CASTREX Who said Yaris was slow? View User's Garage Drives: Yaris T-Sport 2008 Join Date: Nov 2006 Location: Costa Rica Posts: 1,287	If you get the CEl again you need to change to one of the many proven intakes out there. AFE, AEM, Simota, Fujita, WR.

02-16-2009, 04:21 PM	#18
Yoda Drives: 2008 Black Sedan Join Date: Oct 2008 Location: FL Posts: 966	lol THIS^^^^