Which is the positive feed for the Fiero speedometer?
Which is the positive feed for the Fiero speedometer?
J, & K are the positive feeds for the fuel injectors, One for each injector on TBI systems or one for each bank on PFI systems. The Fiero speedometer system works differently than most other GM vehicles. Click HERE for more info.
What do you need to know about Fiero wiring?
This is a list of all the connections that are needed to tie into the Fiero electrical system when doing an engine conversion. This list is to aide in the wiring process. All circuits should be verified before any connections are made.
What’s the temp sender on a Fiero C500?
Connect to temp sender, 1365ohm@100deg.,55ohm@260deg. Connect to coil or ign module. Connect to grounding temp switch or ECM temp output. Connect to gear selector switch (auto.) or reverse switch (man.) along with C1.
Where does the 12 Volt come from on a Fiero ECM?
F is the switched power feed for the ECM, all switched 12 volt inputs on the ECM can be connected to this terminal. The constant 12 volt supply for the ECM comes from the rust colored fusible link with a single weatherpack disconnect at the terminal block near the battery.
J, & K are the positive feeds for the fuel injectors, One for each injector on TBI systems or one for each bank on PFI systems. The Fiero speedometer system works differently than most other GM vehicles. Click HERE for more info.
This is a list of all the connections that are needed to tie into the Fiero electrical system when doing an engine conversion. This list is to aide in the wiring process. All circuits should be verified before any connections are made.
What happens if the speedometer does not register?
If you operate a vehicle and the speedometer does not register anything, or if the speedometer begins to move after the vehicle is in motion, then the transmission speed sensor has failed. If the magnet comes off the speed sensor, it will lodge itself into the transmission making a grinding noise.
What kind of speed sensor does a Fiero 3800 use?
The PCM 4000ppm output from the PCM will feed the Fiero’s stock speedo but you will need to build an interface to make it work like the one pictured below: Of course, nowadays I can reprogram nearly all of the 3800 computers to work with any speed sensor you have.
