P1490 Diagnostic Trouble Code Discussion for November 2015
EVAP Vacuum Cut Valve Bypass Valve Circuit Malfunction
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| Help Request | Posted | |
| 2001 Infiniti QX4 3.5L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: JNRDR09Y81 P1490: EVAP Vacuum Cut Valve Bypass Valve Circuit Malfunction. ... barely could nurse it into bays. At the time only code P1490 [ open or shorted vacuum cut valve by-pass valve ]. In park if you smoothly increased the rpms to about 2500 it was smooth. But if you tromped it it would stumble and backfire. Then found that I ... |
November 25, 2015 |
