P0089 Diagnostic Trouble Code Discussion for May 2019
Fuel Pressure Regulator Performance
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| Help Request | Posted | |
| 2005 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on, P0089 p0090 VIN: 1GCHK23295 P0089: Fuel Pressure Regulator Performance. Fuel pressure at Idle is 9865psi desired fuel pressure is 5800psi. Shut down engine fuel pressure drops to 220psi within 5 minutes. No fuel control using Tech 2 or Snap-on scan tool, increasing fuel pressure with scan tool just increases desired fuel press... |
May 08, 2019 |
