dhulsey779
Full Access Member
Perfect. I've got the 145 amp and see no issues, but real test is when it's hot as shit with the AC running on blast.
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Electric Fans, Worth it?
- Thread starter Tonyrodz
- Start date
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bottomline2000
Full Access Member
U make it sound so ez!!
Lol my efan upgrade took almost a 2 years to get right.
New ecm to fix constant fan on condition -old school crank relearn
2 sets of cooling fans- 1st set turn out to be good
2 ** alternators - 1st one sucked
2 wiring harnesses- 1st one melted due to 1st crappie alternator
80a relay upgrade to 2nd harness..
Justin at BB never gave up and we eventually got it fixed. Least I could do is buy an autocal from him.
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TXBowtieGuy
Full Access Member
Not much HP gain but when your sitting in traffic the electric fans work better and your a/c will work better in traffic.
Joao GANDAREZ
TYF Newbie
I was thinking please correct me if I'm wrong. If i were too get say an ecu/pcm from an 05-06 tahoe, suburban, silverado z71 with flex fuel (because mine has it). do the key on 10 minutes off three times trick. Would i then be an be to run the 2 pins from ecu to trigger the fans as an oem solution. Besides my vin not matching on the pcm. will i have any other drawbacks?.
Thinking of this as the most cost effective way to add fans.pcms on ebay ~$50
Please let me know if I'm making sense to anyone
bottomline2000
Full Access Member
You would probably get trouble codes depending on your generation truck and build sheet, plus you would never pass inspection. Probably easier to send your pcm off to have the pins activated.
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A local shop with a Tech 2 or similar could activate the pins also. I believe the Snap-On Solus can do it.
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Tonyrodz
Resident Resident
Do they need to pay some kind of fee to GM because of the vin?
To activate the pins in your original PCM, no. I have no idea about swapping a PCM from a later model vehicle.
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Tonyrodz
Resident Resident
I've still yet to do this.
I bought a Tech 2 so if you drive over I can do it for you.
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Tonyrodz
Resident Resident
Cool! Would totally be worth it.
Only about 2800 miles; piece of cake!
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Tonyrodz
Resident Resident
No biggie. I drove to Ca.
C’mon tony, lets go on a road trip.... f work.... and wife..... and kids.... and responsibilities......
Scottydoggs
Full Access Member
adding the pinned wires is cake really. i just added two to use my egr voltage for scanning my wideband in hpt.
i made and sold like 10 off board tuning set ups. to interface a pcm via a tuner out side the car. so i have literally 300 pinned 8 inch wires laying around.
if anyone needs some just ask. cant see mailing a couple costing more then a stamp.
i made and sold like 10 off board tuning set ups. to interface a pcm via a tuner out side the car. so i have literally 300 pinned 8 inch wires laying around.
if anyone needs some just ask. cant see mailing a couple costing more then a stamp.
He's got the wires and pins, just can't find a tuner to turn them on in the PCM.
Scottydoggs
Full Access Member
thats a standing off to all who might need them. theres no junk yards local to me, it might be the same for many others out there.
im in northern NJ and have a tuner, but thats 100 bucks in credits to unlock a truck to edit it, and at that point you may as well tune it some.
@Tonyrodz has kind of a long story about this. He has a tuner that he's paid for a tune but he's told Tony that he needs to install the fans before he can activate the pins which is BS. I had mine activated by Black Bear weeks before I installed the fans. That way, as soon as I installed them they worked. Most of us either buy an aftermarket fan harness with the relays and wiring with pins or we buy the OEM harness with everything including the pins. But I guess if you were building your own harness the pins would come in handy or if the OEM harness had them cut off. The pins and pigtails alone won't let you hook up the fans, you need either 2 or 3 relays depending on the year. But if anybody needs them it's nice for you to step in for sure.
