Step | Action | Values | Yes | No |
---|---|---|---|---|
Important: Before diagnosing this condition, check service bulletins for programmable read-only memory (PROM) updates. DEFINITION: Involves a momentary lack of response as the accelerator is pushed down. This can occur at any vehicle speed. It is usually the most severe when first trying to make the vehicle move, as from a stop. Hesitation, sag, or stumble may cause the engine to stall if severe enough. | ||||
1 | Were the Preliminary Checks performed? | -- | Go to Step 2 | |
2 |
Is a repair necessary? | -- | Go to Step 3 | Go to Step 4 |
3 | Repair or replace any components as needed. Did you complete the repair? | -- | System OK | -- |
4 |
Is a repair necessary? | -- | Go to Step 5 | Go to Step 6 |
5 | Repair or replace any components as needed. Did you complete the repair? | -- | System OK | -- |
6 |
Does the test light blink on all connectors? | -- | Go to Step 8 | Go to Step 7 |
7 |
Did you complete the repair? | -- | System OK | -- |
8 | Measure the resistance of each fuel injector. The resistance will increase slightly at higher temperatures. Is the fuel injector resistance within the specified range? | 11.6-12.4 ohms | Go to Step 10 | Go to Step 9 |
9 | Replace any of the fuel injectors with a resistance that is out of specifications. Did you complete the replacement? | -- | System OK | -- |
10 | Perform an injector balance test. Refer to Fuel Injector Balance Test with Special Tool . Is a repair necessary? | -- | Go to Step 11 | Go to Step 12 |
11 | Replace any restricted or leaking fuel injectors. Did you complete the repair? | -- | System OK | -- |
12 | Measure the fuel system pressure after a cold start or during moderate or full throttle acceleration. Is the fuel pressure within the specified range? | 379-393 kPa (55-57 psi) | Go to Step 14 | Go to Step 13 |
13 | Repair the restriction in the fuel system or replace the faulty fuel pump. Did you complete the repair? | -- | System OK | -- |
14 |
Is a repair necessary? | -- | Go to Step 15 | Go to Step 16 |
15 | Repair or replace any ignition components as needed. Did you complete the repair? | -- | System OK | -- |
16 |
Did you find and correct the condition? | -- | System OK | -- |