I swapped in a 5.3 in my obs
I used a PSI wiring harness with the swap
I hooked the tach wire from wiring harness to the white wire on firewall connector ( c100)
Can someone help diagnose why the tach isnt working?
I swapped in a 5.3 in my obs
I used a PSI wiring harness with the swap
I hooked the tach wire from wiring harness to the white wire on firewall connector ( c100)
Can someone help diagnose why the tach isnt working?
Mine doesn't work either. I believe this is the solution. I haven't had time to do it yet but it looks like it should work.
97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
TURBO IN THE WORKS
NO DO NOT use that diagram. That one is for Autometer Tachs and some aftermarket ones.Originally Posted by Chevydillan
Last edited by capricefrk013; 05-07-2014 at 09:09 PM.
Been lurking since 09 and I finally have my kickass 6.0 LQ4LQ4 LQ9 6.0L Engine Service Manual Save to your computer in case it disappears
Wow thanks. I just bought the resistor. So what is the fix?
97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
TURBO IN THE WORKS
I found it once but I cant remember where I saw it. I cant remember if it is in the tune that can fix it or not. If I remember correctly, because I cant find it on my computer. I dont need it for my truck being a 98. I think it was just the earlier ones. I could be way off though. I am still searching for a solution.
Been lurking since 09 and I finally have my kickass 6.0 LQ4LQ4 LQ9 6.0L Engine Service Manual Save to your computer in case it disappears
You most likely need to change a parameter in the tune . Here is a snap shot from hptuners. The tach resolution needs to be changed to make your tach work. My high and low resolution are set to 3 for mine to work correctly.
What is the difference in the resistors
Besides the 320ohm difference nothing. I think either resister should work just fine I'm going to go ahead and try my 1000ohm this weekend I'll let you know how it works out
97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
TURBO IN THE WORKS
thats the way i did it and it works perfectly. i just dont remember the size of the resistor tho.
Like Tumbler in "Gone in 60" I'll drive anything with wheels or without
My 95 ECSB LQ9 build thread - http://www.ls1truck.com/forums/lsx-t...to-95-obs.html
CALI LEGAL ENGINE SWAP!
Stock 03 LQ9, DBW, 95' 4l80e w/ Transgo shift kit, 2010 50# GM injectors, 2800 Circle D stall, Spectre CAI, Upgraded trans cooler, Home-made E-fans/shroud, Dual EP-381 fuel pumps w/Home-made hotwire kit
NEXT ON LIST: Dual Battery setup, CAM/Valvetrain upgrade, Build my own rear mount turbo, TRU-TRAC, HIT THE STRIP!!!
The tach on my 92 worked without a resistor. I just adjusted the settings in hp tuners until the tach matched what the gauge in hptuners showed. I think mine are set on 6. My truck was originally a 4.3 v6.
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