2002 Tahoe electric fan?
2002 Tahoe electric fan? I have a friend who swapped a 5.3 (flex fuel engine w/matching PCM) into a Wagoneer, and we're now at the point of deleting rear 02's, auto trans sensors, purge solenoid,tank pressure sensor, etc in the PCM.
A few questions:
1) Is it possible to add the ability to control an electric fan to a pcm (411) in a 2002 Tahoe (flex fuel)? It would be nice to not have to add another sensor to the cooling system. The PCM pinout mentions nothing regarding fan control. Is it just a matter of having a segment added or swapped? If so, what pin would then be used as the fan relay "signal" lead?
2) What is the proper way to disable the E85 abilities in the pcm? As I understand it, the PCM performs a testing procedure once it senses that a refueling event has taken place. This swap has none of the associated sensors, so I've deleted all DTC's in the PCM that relate to tank pressure sensor, purge valve, etc. Is there more that needs to be done? We started the vehicle tonight, and it seems to run like a watch...I just want to make sure that all is good.
Thanks in advance for any help/advice. I can also post a .hpt bin if it will help.
A few questions:
1) Is it possible to add the ability to control an electric fan to a pcm (411) in a 2002 Tahoe (flex fuel)? It would be nice to not have to add another sensor to the cooling system. The PCM pinout mentions nothing regarding fan control. Is it just a matter of having a segment added or swapped? If so, what pin would then be used as the fan relay "signal" lead?
2) What is the proper way to disable the E85 abilities in the pcm? As I understand it, the PCM performs a testing procedure once it senses that a refueling event has taken place. This swap has none of the associated sensors, so I've deleted all DTC's in the PCM that relate to tank pressure sensor, purge valve, etc. Is there more that needs to be done? We started the vehicle tonight, and it seems to run like a watch...I just want to make sure that all is good.
Thanks in advance for any help/advice. I can also post a .hpt bin if it will help.
Last edited by salemetro; Jan 15, 2011 at 10:17 AM.
Is it possible to add a fan control segment to the bin? It appears to not have that option natively in the bin, but I will double-check.
Well, I looked through the cal and still can't tell for sure. The segment list is as follows:
1-12216125
2-9357732
3-9358972
4-9358200
5-16264431
6-16264688
7-9373647
8-9359144
Controller- p01
seed- 11B0
Not sure if this helps.
1-12216125
2-9357732
3-9358972
4-9358200
5-16264431
6-16264688
7-9373647
8-9359144
Controller- p01
seed- 11B0
Not sure if this helps.
We thought about using a non-e85 cal, but the injectors on the L59 flow more than a LM7....so we decided against that for obvious reasons. We also do not have the tank pressure sensor (custom fuel cell), or the level sending unit connected to the PCM.
Is it possible to add a fan control segment to the bin? It appears to not have that option natively in the bin, but I will double-check.
Is it possible to add a fan control segment to the bin? It appears to not have that option natively in the bin, but I will double-check.
I will look in the file for a way to disable Flex
I have 3 bin files from different E85 vehicles that match yours.
Last edited by CalEditor; Jan 15, 2011 at 03:10 PM.
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Like I said try this. I did it in a Hex-Editor
Attachment 274410
Attachment 274410
Like I said try this. I did it in a Hex-Editor
Attachment 274410
Attachment 274410
Teching In
Joined: Jan 2013
Posts: 8
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2002 Tahoe, Flex Fuel
Reviving an old thread, but I am in the middle of doing an Electronic fan conversion on my 2002 Tahoe. If I am reading the schematics correct, I put the Dark Blue wire into pin 33 of the Red Connector. But on my PCM, 33 is already populated?
Any advise would be greatly appreciated!
Reviving an old thread, but I am in the middle of doing an Electronic fan conversion on my 2002 Tahoe. If I am reading the schematics correct, I put the Dark Blue wire into pin 33 of the Red Connector. But on my PCM, 33 is already populated?
Any advise would be greatly appreciated!
.
