Replaced coil packs and spark plugs, tune-up day before test and failed please help
Here's a link to your problem code. P1320 Nissan Ignition Signal
SOURCE: Auto Diagnostic Trouble Code
cORRECT. tHIS CODE DOES DEALs With emmissions. P1400 deals with the EGR valve. In case u are not aware, EGR stands for Exhaust Gas Re-circulation. What really this valve does is that it re-cycles some of the exhaust gases into the cylinder for combustion. The EGR valve might be blocked or has malfunctioned. It is advised that this valve changed or consult with a mechanic who is knowledgeable about this technology. a malfunctioned/dis-abled EGR system will cause the car to fail an emissions test, and may cause the EGR passages in the cylinder head and intake manifold to become blocked with carbon deposits, necessitating extensive engine disassembly for cleaning. So it is advised that u repair this ASAP
SOURCE: p1320 trouble code plus
The P1320 code is essentially a coil primary voltage problem. This is traceable using a labscope or accurate DVOM and perhaps you can isolate one or two coils that still work but are close to failure...but there is a nissan service message recommending replacement of ALL coils with updated/improved models to prevent this type of failure. TCS/SLIP is traction control. Most likely you have a speed sensor issue. Be aware, some vehicles can falsely illuminate TCS because of low tire pressure in a single wheel.
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SOURCE: nissan frontier 2002 failed emissions test with
CODE PO447 EVAP CANISTER VENT CONTROL VALVE CIRCUIT OPEN.POSSIBLE CAUSES. 1.HARNESS OR CONNECTORS THE SOLENOID VALVE CIRCUIT IS OPEN OR SHORTED. 2. EVAP CANISTER VENT CONTROL SOLENOID VALVE.
SOURCE: p1320 runs smooth no misfire
These engines had a lot of problems with coils, most people just end up replacing all of them. You may find them a little cheaper online. There was a bulletin for broken or worn wiring inside the harnesses that go to the coils so you should carefully check back along the harness to each on, especially where the harness might move when the engine torques over.
Dave
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