Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSFORD1987TEMPO AWD L4-140 2.3L HSCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONINPUT & OUTPUT SUMMARYGENERAL INFORMATION
1987 Ford Tempo AWD L4-140 2.3L HSC
General Information
1987 Ford Tempo AWD L4-140 2.3L HSCSECTION General Information
The electronic engine control subsystems (CFI, EFI/SEFI and Carbureted engines) consists of the ECA and various sensors and actuators. The ECA reads inputs from various subsystem sensors, then determines various outputs to control engine function/operation. The operating reference voltage (VREF) between the ECA and its sensors is five volts. This enables these components to work during the crank operation even though battery voltage drops.
The components which comprise the EEC-IV subsystem can be divided into three categories: Electronic Control Assembly (ECA), System Inputs (sensors, switches or signals) and System Outputs (actuators).
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.