Fuel Injector(S)
- Connect tachometer to engine. Start engine and run at idle. Remove harness connector from injectors one at a time. Engine idle speed should drop 100-300 RPM as each injector is disconnected. If engine idle speed does not drop, check the wiring connector, injector resistance or injection signal from the computer.
- Disconnect electrical connector from each injector. Measure injector resistance. See INJECTOR RESISTANCE SPECIFICATIONS table. If injector is not to specification, replace injector.
INJECTOR RESISTANCE SPECIFICATIONS
| Application | Ohms |
|---|---|
| PFI 1.2L | 10-18 |
| PFI 1.8L Turbo & Non-Turbo (Injector) | 2-3 |
| PFI 1.8L Turbo & Non-Turbo (Resistor) | 5.8-6.5 |
| PFI 2.2L | 11-12 |
| PFI 2.7L | 13.8 |
| TBI | 0.5-2 |