I have all of these unhooked sensors on my engine. But don't know where they go. Need help finding where they go. Send photos of where they connect because I don't know much about engines and also number them to help me.
1: Just all of the wires bundled up. 2-4: These are each sensor in a separate photo. 5: The plugging for the distributor is broken so I need to buy a new one but don't know the name of it.
Pics 2 and 3 go thru the firewall and connect under the center console, pics 3 and 4 go to the ecm in the center console, last pic is one of 2 connectors for the coil. Pull the center console and all will be revealed!
Pics 2 and 3 go thru the firewall and connect under the center console, pics 3 and 4 go to the ecm in the center console, last pic is one of 2 connectors for the coil. Pull the center console and all will be revealed!
shem
could I get some photos though. I'm not the best with engines. you also said center console. Do they go back into the cabin of the car?
As a new Fiero owner and probably one of our youngest forum members you might be interested in the repair manual posted here. Fiero Repair Manual
------------------ " 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, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, 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 "
could I get some photos though. I'm not the best with engines. you also said center console. Do they go back into the cabin of the car?
Yes, 2, 3, 4, and 5 go into the cabin underneath the "armrest" (center console), 3 is left unplugged, and is fastened underneath the cigarette lighter surround plate in the center console, 4 and 5 are plugged into the ECM (silver box thing fastened to the rear wall directly behind the "glove box"/compartment in the center console). The service/repair manuals have all the information for the things your looking for.
5 is just "ignition coil connector", here at rock auto, if going to a parts place, then they should be able to figure it out from the name.
Yes, 2, 3, 4, and 5 go into the cabin underneath the "armrest" (center console), 3 is left unplugged, and is fastened underneath the cigarette lighter surround plate in the center console, 4 and 5 are plugged into the ECM (silver box thing fastened to the rear wall directly behind the "glove box"/compartment in the center console). The service/repair manuals have all the information for the things your looking for.
5 is just "ignition coil connector", here at rock auto, if going to a parts place, then they should be able to figure it out from the name.
that would explain why the cover for the shifter is loose and not connected. the previous guy must of been digging in there trying to connect it. Am I going to need to lift the car and go under it to reattach the wires to the centers console or is there another way, cause right now all of them are in the engine bay connected to something else that is on the left downwards of the engine.
edit: just saw the photo. my PC is slow. so that fire wall part is the entrance of the wires. ill have to look at them later cause mine go down in the engine bay
another edit: where did you get those covers. I surprisingly only have one tear out of both of the seats and would like to keep it that way by getting some covers. Don't want anymore to form.
[This message has been edited by Carlin (edited 09-09-2025).]
As a new Fiero owner and probably one of our youngest forum members you might be interested in the repair manual posted here. Fiero Repair Manual
ill have to look at it in a bit. I bought this manual off of amazon but its kinda useless. The first thing I did was look up the ground strap location and it only shows it for the 4 cylinder even though the book says all models.
ill have to look at it in a bit. I bought this manual off of amazon but its kinda useless. The first thing I did was look up the ground strap location and it only shows it for the 4 cylinder even though the book says all models.
Yeah, Haynes, Chilton, etc. are aftermarket manuals, they have a lot of known issues with bolt torque specs etc being wrong, the one linked is the GM manual, and while it is maybe a little harder to navigate, it has a lot more information.
that would explain why the cover for the shifter is loose and not connected. the previous guy must of been digging in there trying to connect it. Am I going to need to lift the car and go under it to reattach the wires to the centers console or is there another way, cause right now all of them are in the engine bay connected to something else that is on the left downwards of the engine.
edit: just saw the photo. my PC is slow. so that fire wall part is the entrance of the wires. ill have to look at them later cause mine go down in the engine bay
another edit: where did you get those covers. I surprisingly only have one tear out of both of the seats and would like to keep it that way by getting some covers. Don't want anymore to form.
If the wires can reach the edge of the trunk compartment as shown in the first picture, there should be enough slack to send them into the interior. Nothing immediately on that end of the wiring should be connected anywhere near the back side of the engine, it should come through the firewall, run down it a little bit, then run along the metal comment pipe on the engine to the timing cover area, cross over the engine there, then go under the alternator and to the transmission. All along that main path there will be placed where it splits of for all the sensors and other things, including a bundle running over each valve cover.
If you can get your hands on a factory service manual do it. The 2nd part that has helped me is the various catalog sites of parts long since discontinued.
A lot of great knowledge on here and as I'm sure many say a photo is worth a thousand words.
I'll chime in where I know/can, my ride is a different year though, 84 indy and not ready to present.
If the wires can reach the edge of the trunk compartment as shown in the first picture, there should be enough slack to send them into the interior. Nothing immediately on that end of the wiring should be connected anywhere near the back side of the engine, it should come through the firewall, run down it a little bit, then run along the metal comment pipe on the engine to the timing cover area, cross over the engine there, then go under the alternator and to the transmission. All along that main path there will be placed where it splits of for all the sensors and other things, including a bundle running over each valve cover.
Ill try to get it all hooked up tomorrow. we went there like a hour ago but it started raining.
If you can get your hands on a factory service manual do it. The 2nd part that has helped me is the various catalog sites of parts long since discontinued.
A lot of great knowledge on here and as I'm sure many say a photo is worth a thousand words.
I'll chime in where I know/can, my ride is a different year though, 84 indy and not ready to present.
Stingray
i tried getting a factory one awhile back but didn't have the money. they are like 100 bucks on ebay. I had to buy tires for my ATV so never got to it. would buy a ebook but i like being able to work on the car while having a book in front of me. Its easier to navigate.
i tried getting a factory one awhile back but didn't have the money. they are like 100 bucks on ebay.
Download the 86 Factory Service Manual and the Haynes. Only print the pages you need for the job you're doing. They'll get grimed up anyway and you can throw them away.
Is this car worth the time? Seems like everything is missing and you'll need a new bank account to replace everything.
I believe it is because it was free. Here's a short story. So I'm the 3rd owner. The first owner was some old guy and he loved this car. He took it to Nebraska Land for a tune up. They didn't put oil in the engine so when he drove it he blew up the motor. No problem. He bought a new motor and began installing it. He sadly died though before finishing it. His daughter didn't know what to do with it so she gave it to a friend for free as well. This is the second owner, the wife of the guy I got it from. He was selling it on marketplace and I was interested. They were family friends and after awhile just gave it to me because her husband didn't know how to fix it. They gave it to be for free because it was gifted to them for free. All she wants in return is a photo of it driving. It was normally 1800 but I got I for free so that was nice of them.
