hey guys i bought a 86 gxl automatic with a bad motor i just bought a engine with harness that has 44k on it got the motor in and started to hook up the new harness and that harness dosent have some of the plugs my old one has one of them id the electronic shock which probaly dont work anyway so i dont care about that the one that is bothering me is the one that goes to a little silver box on the left side of the car towards the front does anyone know what that is and do i need it also im looking for a coolant bottle the goes on the firewall near thw winsheild wiper moter if anyone has one anyway heres a pic of the part im not sure if i need

 

it is the Knock sensor..I think.

 

Fuel injector resistor. If you had one before you need one now.
86's had different impedence injectors than the later S4's and S5's requiring the resistor

The "coolant" tank on the firewall is the subzero start assist tank.

FWIW
Crispy

 

holy **** learn how to write man. this isn't an English paper but at least use complete and separate sentences

 

I know how to write. This is a forum, not an english class. Either contribute meaningful material or **** off.
Crispy

 

ok so i dont need the tank on firewall but need the 86 harness do you know if its a hard job to put my 86 harness on the 88 motor

 

Well it's not a hard job per se but I don't think it will work. The impedence of the fuel injectors is different between the 86 and 88 engines. I installed a used 88 long block into my 86 chassis and used the wiring harness from the 88. I could not use the 86 harness IIRC because of the injector issue - different injector connectors plus the resistor pack problem. I'm sure there is a way to cut open the harness, swap the injector plugs, and strip out the resistor pack wires to make it work but it might be just as easy to simply rpelace it with the correct harness.
If you feel like a little light reading and a chuckle or two you might take a look at my webpages starting here: http://www.negative-camber.org/crisp...c/fcpart13.htm
or go right back to the very beginning here: http://www.negative-camber.org/crispyrx7/fc/fcpart1.htm
It's the best I can provide.
HTH,
Crispy

 

You put a 88 engine in a 86. Used the 88 EM harness.

No problem as long as you used the 88 fuel injectors.

If you used the 86 injectors on the 88 harness, then you need to add to each injector wire, a 6ohm resistor block. But why make life difficult? Use the 88 injectors.