| Feature | 88V | 78 | 73 |
| Digital display with analog bargraph | • | • | • |
| Continuity for detecting opens and shorts | • | • | • |
| Diode test for alternator testing | • | • | • |
| Peak Min/Max captures intermittence as fast as 250 microseconds | • | | |
| Min/Max average to monitor trends in oxygen sensor values for fuel trim | • | | |
| Pulse width for fuel injector on time measurement | • | | |
| Milliamp ranges to find low current parasitic drains | • | | |
| Lo-Ohms (.01 Ω) for low resistance sensor and coil measurements | • | | |
| Duty cycle for pulse width modulated signals | • | • | |
| RPM for ignition systems | • | • | |
| Temperature for coolant and air temperature sensors | • | • | |
| Dwell for points and feedback carburators | | • | |