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Threw a code 91 NEED HELP

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Old 09-20-2006, 12:42 PM
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Default Threw a code 91 NEED HELP

I installed a obdIIa single cam swap in my obdIIa hatch. Any ideas on the code 91?


Modified by quick_hatch at 3:26 PM 9/20/2006
Old 09-20-2006, 12:43 PM
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find the right ecu for that motor u dropped in
Old 09-20-2006, 12:47 PM
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im assuming u threw in a y8

91 is the ftp sensor

ur car didnt come with one so its gonna throw that code because the ecu is looking for it

if u search theres a easy fix for it that involves a potentiometer

i've done this & its been working for a long time
Old 09-20-2006, 12:51 PM
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Default Re: (tha_badguy)

i threw in a obdIIa the non vtec swap. what can i do to fix this issue.
Old 09-20-2006, 12:54 PM
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use an ecu that doesnt look for the FTP sensor

get a 96 dx/cx ecu
it doesnt look for it

Old 09-20-2006, 01:04 PM
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Default Re: (tha_badguy)

Not all obdIIa cx/dx ecu's look for it? i think i have a 97 dx ecu.
Old 09-20-2006, 02:13 PM
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the 96 ecus dont look for it because the 96 hatch cx/dx dont have a FTP Sensor
97 cx/dxs have a FTP Sensor thats why ur gettin the code
Old 09-20-2006, 02:23 PM
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Default Re: (tha_badguy)

okay thanks.
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