I am REALLY close to getting my Fiero running. Well, it is running, but with a Series II TB on my 3800 Series 3 setup. When I bought my engine with extra parts for the swap, I was told it came with a Northstar TB, as well as the adapter plate. Turns out, it is a Series II TB, with the adapter plate to make it work on the Series III snout. So, the engine idles fairly well, but any accelleration at all, it chokes and coughs. It is just getting ALL the wrong sensor readings from the TPS and the MAF, as well as the AIT sensor.
I am off to the junk yard tomorrow, in hopes I can get the Northstar Throttle Body, and the MAF that I need for this setup. I have no idea what vehicles to look at to get the parts. I am trying to save a few hundred dollars by getting the MAF and TB from the junkyard. I already ordered THE $169 KIT THAT I NEED from ZZP. Seems I already blew $100 when I bought the new MAF for this Series II Throttle Body......
What MAF is your PCM programmed for? Match the hardware to the software and you should be close enough in the tune to idle and run correctly. I got my LQ4 MAF from eBay.
[This message has been edited by nosrac (edited 06-16-2017).]
I use a 2000 N* TB with my setup. 00- up may be the same. Works great but you must install an external MAF and table in the 3800SC PCM program and tweak the fueling from there. You will also need the N* TB adapter. I run the larger LS1 MAF Note Correction. Brain freeze when I wrote this ------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
[This message has been edited by Dennis LaGrua (edited 06-17-2017).]
From what I understand, my PCM is programmed for the LQ4 by Fieroflyer.
I am aware of the adapter tube, it is part of the kit I linked above.
So 1990 and up on the TB....Ok, what vehicles have this TB installed? I need to know a vehicle, so I can find one in the junk yard. from what vehicles. Also, what has the LQ4 MAF on it? I don't know if its just my lack of knowledge, but it seems like it would be hard to find these parts in the yard tomorrow, with no Idea what vehicles to look in. Newer than 1990 narrows it down a little bit I guess hahaah
[This message has been edited by JohnWPB (edited 06-16-2017).]
Ok, I need to get my PCM reprogrammed, I am told that Ryan is the guy to do it. How do I get ahold of him. I hear he has a website that you input all your information as to what you want done.
The LQ4 TB is also a popular choice on 3800's but you may still need to run a larger inline MAF sensor to take advantage of the better flow.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
LQ4 MAF will require a wiring harness adapter to run the integrated AIT. You can also use the smaller (3.5") LT1 MAF and use your stock harness and AIT. According to RockAuto, here is a list of vehicles that have the LQ4 MAF:
BUICK RAINIER 2004-2007 CADILLAC CTS 2004-2005 CADILLAC DEVILLE 2000-2005 CADILLAC ELDORADO 2000-2002 CADILLAC ESCALADE 2002-2006 CADILLAC SEVILLE 2000-2004 CHEVROLET AVALANCHE 1500 2002-2006 CHEVROLET AVALANCHE 2500 2002-2006 CHEVROLET B7 2001-2002 CHEVROLET C3500 PICKUP 2001-2002 CHEVROLET C4500 KODIAK 2003-2009 CHEVROLET C5500 KODIAK 2003-2009 CHEVROLET C6500 KODIAK 2001-2009 CHEVROLET C7500 KODIAK 2001-2009 CHEVROLET C8500 2003-2009 CHEVROLET CORVETTE 2001-2007 CHEVROLET SILVERADO 1500 1999-2006 CHEVROLET SILVERADO 1500 CLASSIC 2007 CHEVROLET SILVERADO 2500 1999-2006 CHEVROLET SILVERADO 2500 CLASSIC 2007 CHEVROLET SILVERADO 3500 2001-2006 CHEVROLET SILVERADO 3500 CLASSIC 2007 CHEVROLET SSR 2003-2006 CHEVROLET SUBURBAN 1500 2000-2006 CHEVROLET SUBURBAN 2500 2000-2006 CHEVROLET TAHOE 2000-2006 CHEVROLET TRAILBLAZER 2003-2009 GMC B7 2001-2002 GMC C3500 PICKUP 2001-2002 GMC C4500 TOPKICK 2003-2009 GMC C5500 TOPKICK 2003-2009 GMC C6500 TOPKICK 2001-2009 GMC C7500 TOPKICK 2001-2009 GMC ENVOY 2003-2009 GMC SIERRA 1500 1999-2006 GMC SIERRA 1500 CLASSIC 2007 GMC SIERRA 2500 1999-2006 GMC SIERRA 2500 CLASSIC 2007 GMC SIERRA 3500 2001-2006 GMC SIERRA 3500 CLASSIC 2007 GMC YUKON 2000-2006 GMC YUKON XL 1500 2000-2006 GMC YUKON XL 2500 2000-2006 HUMMER H2 2003-2009 ISUZU ASCENDER 2003-2006 ISUZU NPR 2007-2012 ISUZU NPR-HD 2007-2008 OLDSMOBILE AURORA 2001-2003 PONTIAC BONNEVILLE 2004-2005 PONTIAC GTO 2005-2006 SAAB 9-7X 2005-2009
Originally posted by Dennis LaGrua: The LQ4 TB is also a popular choice on 3800's but you may still need to run a larger inline MAF sensor to take advantage of the better flow.
I am dealing with parts and settings, harnesses with 2 throttle bodies already, I am not going to add a 3rd one in the mix any time soon!
quote
Originally posted by Jeckel:
LQ4 MAF will require a wiring harness adapter to run the integrated AIT. You can also use the smaller (3.5") LT1 MAF and use your stock harness and AIT. According to RockAuto, here is a list of vehicles that have the LQ4 MAF:
How do you look up a part, to find out what all vehicles it is on. The only way I am familiar is providing the Vehicle make, mode, year, engine, transmission type ect, to get the part numbers.
How do you look up a part, to find out what all vehicles it is on. The only way I am familiar is providing the Vehicle make, mode, year, engine, transmission type ect, to get the part numbers.
So if you know at least one year/make/model find it on rock auto and usually the part number will be a hotlink. click on that and it will bring up a list of all vehicles that is used on.
I am dealing with parts and settings, harnesses with 2 throttle bodies already, I am not going to add a 3rd one in the mix any time soon!
Understood but the main PCM changes will involve the MAF that you choose to use. A 3800SC will start and run with many GM TB's and only simple changes to the program will be needed. In the case of a different MAF sensor, the entire MAF table will need to be imported into the program.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
Understood but the main PCM changes will involve the MAF that you choose to use. A 3800SC will start and run with many GM TB's and only simple changes to the program will be needed. In the case of a different MAF sensor, the entire MAF table will need to be imported into the program.
Ryan from Sinister emailed me yesterday. He sent me a form to fill out with all of the details of the engine, donor car, transmission, recipient car, tire sizes, exhaust size, with ot without CAT and so forth. We have been emailing me back and forth with questions and wanting more details on things. One question in particular was about the MAF. Come to find out, there are 2 variances that have 2 different tables that will fit the series II throttle body. I had to take it out, and get detailed pictures of everything. He was then able to determine which one it is.
I purchased a PCM with a 6mo warranty on eBay, for $16 with free shipping, and had it drop shipped to him. He will have it no later than Friday. For that price, and the time saved packaging this one up and shipping it to him, it was worth it just to have a spare.
[This message has been edited by JohnWPB (edited 06-20-2017).]
