Considering the 3800 SC swap. Questions on engine management (Page 1/1)
phils88GT NOV 04, 08:42 AM
I am considering swapping out the 2.8 in my 88GT for the venerable 3800 SC engine. My question is what engine management is the most popular for this swap? Or is it needed at all and the factory management is used and just tuned? How about engine harness?

Thanks all!
Larryinkc NOV 04, 10:54 AM
I have a 3800 Series III SC in a 1988 Mera, it's lots of fun to drive. I can't give a comparison as it had a 3800 when I git it and it's the only Fiero I have driven. Here are a few links that may help, enjoy.

http://www.gmtuners.com/swap/3800.htm

https://www.fiero.nl/forum/Forum2/HTML/139530.html

https://www.fiero.nl/forum/...100421-1-053213.html

https://www.fiero.nl/forum/Forum2/HTML/134251.html

https://www.fiero.nl/forum/...060811-2-070151.html

https://www.fiero.nl/forum/...050410-2-055634.html

https://www.fiero.nl/forum/...060811-2-072137.html
Spoon NOV 08, 09:17 PM

quote
Originally posted by phils88GT:

How about engine harness?



When I pulled a 2000 3800 GTP engine I got the entire harness, ECM, and all the goodies I'd need and then some. I striped down the harness and weeded out all the wiring I didn't need and there was lots of that. From there with the aid of a "Darth" wiring diagram I reassembled the harness to accommodate the needs of my build. At one point everything looked like a huge ball of spaghetti. Also a lot of knowledge can be gained during this process.
Example: A pink wire leaving the ECM ends up being a white wire at the destination end. Apparently as it passed near some hot objects like an exhaust manifold, the heat caused the color to fade even though it was fully insulated within the harness bundle. There's plenty to learn by building or reassembling your own harness.
I was also left with so much extra wiring that I hung it on some hooks in the garage. No need to buy any wiring any color for a long time.

Spoon


------------------
"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut