2002 L59 Flex Fuel OK for swap? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chuckmc8 · 12-19-2017, 05:31 PM

I have done quite a few swaps but none with L59 flex fuel option. The engine I am considering is a 2002 L59 with low miles

Is there any special consideration for the flex fuel option as it relates to an engine swap?

I read that there is a sensor that measures the amount of ethanol in the fuel and adjusts accordingly- and that the PCM defaults to a standard setting if the computer does not get a reading from the sensor.

Is this something that is addressed in the PCM tuning?

I will just use regular pump gas as always and do not need the flex fuel capability but do not want to throw a code that puts on the check engine light

Thanks for suggestions

qwik · 12-19-2017, 07:20 PM

I did one, no issues at all.

BR3W CITY · 12-20-2017, 12:06 PM

Honestly it seems worth it to just get the sensor from a donor and hook it up. Its not an immensely complicated piece, and allows you to run 87-93 straight, low-E blended (common) gas, and E75,85,90.

12-19-2017, 05:31 PM	#1
chuckmc8 It's alsways something..... Join Date: Nov 2008 Location: Douglasville GA Posts: 1,171	2002 L59 Flex Fuel OK for swap? I have done quite a few swaps but none with L59 flex fuel option. The engine I am considering is a 2002 L59 with low miles Is there any special consideration for the flex fuel option as it relates to an engine swap? I read that there is a sensor that measures the amount of ethanol in the fuel and adjusts accordingly- and that the PCM defaults to a standard setting if the computer does not get a reading from the sensor. Is this something that is addressed in the PCM tuning? I will just use regular pump gas as always and do not need the flex fuel capability but do not want to throw a code that puts on the check engine light Thanks for suggestions __________________ 1968 RS Camaro 'Vert Matching number 327 and M21 Muncie 1968 C10 Black with red interior and orig paint. 5.3 / 4l60e,3:73 POSI 17" Torq Thrusts 1968 CST 514 Red with black interior. Buddy Buckets, Factory A/C, PS, PB- 20" AR custom shop TT, 5.3 and 4l60e

12-19-2017, 07:20 PM	#2
qwik Registered User Join Date: Sep 2015 Location: Savannah GA Posts: 51	Re: 2002 L59 Flex Fuel OK for swap? I did one, no issues at all.

12-20-2017, 12:06 PM	#3
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: 2002 L59 Flex Fuel OK for swap? Honestly it seems worth it to just get the sensor from a donor and hook it up. Its not an immensely complicated piece, and allows you to run 87-93 straight, low-E blended (common) gas, and E75,85,90. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD



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