Question about 2006 Nissan Xterra

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Ecm circuit backup

My car does not accelerate beyond 40m\hr, it obviously does not rev high at all, it over heats, fuel guage has been inaccurate and unreliable and when it was scanned, the summary was po604 ecm backup circuit and po463 fuel level sen circ

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 8 Answers

SOURCE: engine surges when accelerating in neutral/fuel guage inaccurate

you have two different problems. first your gauge may have a bad ground or bad sending unit . try fuel injector cleaner as they may be gloged for hesitation .

Posted on Mar 11, 2009

luke_bradfor
  • 662 Answers

SOURCE: 1989 holden astra slx 1.8l

The ecm light comes on for a reason, and it is hard to work out the problem, until you find out what codes the computer is registering....i would suggest that you take vehicle to a local mechanic and get him to read the codes....that would give you and us an easier way to find out whats happening.......

Posted on Aug 28, 2010

  • 237 Answers

SOURCE: i ve nissan pathfinder 2005

failure rate of these sensors is very high .nissan extended the warranty period on these rather than issuing a recall.contact local dealer replacement would almost certainly be under warranty.as for no start there is currently a campaign to replace ecm relays for this issue but since obviously your fuel gauge isnt accurate you may just be out of gas.

Posted on Jan 30, 2011

  • 6468 Answers

SOURCE: 2005 nisszn exterra where is the fuel level sensor circuit high input located?

inside the fuel tank attached to the fuel pump housing

Posted on Jun 11, 2012

emissionwiz
  • 75005 Answers

SOURCE: my accelerator doesnt respond when i step on it. the speedometer too doesnt go beyond 40km/hr. help me

You must have the systems control module scanned for fault codes to begin the process of repairing this, this take special equipment and a trained technician.

Posted on Jun 13, 2012

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Where is fuel pump relay on 2009 gmc acadia


Your vehicle has no fuel pump relay . Has a fuel pump flow control module .
Fuel Pump Flow Control Module (FPCM)
The fuel pump flow control module (FPCM) is a serviceable GMLAN module. The FPCM receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump located within the fuel tank to achieve the desired fuel pressure. The FPCM sends a PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal.
Plus it has two fuel pumps !
The high pressure fuel pump (9) is a mechanical one cylinder design driven by an eccentric on the exhaust camshaft (1) of bank 2. High pressure fuel is regulated by the fuel rail pressure (FRP) regulator, which is a part of the high pressure fuel pump. The FRP regulator is a magnetic actuator which controls the inlet valve of the high pressure pump. The ECM provides battery voltage on the actuator high circuit and ground on the actuator low reference circuit. Both circuits are controlled by the ECM. When the ECM deactivates the FRP regulator, both circuits are disabled and the inlet valve is held open with spring pressure. When the ECM activates the FRP regulator, the low circuit driver connects the low reference circuit to ground and the high circuit driver pulse-width modulates (PWM) the high circuit. The ECM uses the camshaft and crankshaft position sensor inputs to synchronize the FRP regulator with the position of the eccentric on the camshaft. The ECM regulates fuel pressure by adjusting the portion of each pump stroke that provides fuel to the rail. The high pressure fuel pump also contains an integrated pressure relief valve.
Your best bet is have it towed to the dealer , you don't want to mess with the high pressure pump .
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Fuel Injection Pump Fuel Valve Open Circuit P0254 Fuel Injection Pump Fuel Valve Current Too High P0300 Multiple Cylinder Misfire P0301 Cylinder 1 Misfire P0302 Cylinder 2 Misfire P0303 Cylinder 3 Misfire P0304 Cylinder 4 Misfire P0305 Cylinder 5 Misfire P0306 Cylinder 6 Misfire P0335 Crankshaft Position Sensor Circuit P0336 Crankshaft Position Sensor Performance P0337 Crankshaft Position Sensor Circuit Low P0338 Crankshaft Position Sensor Circuit High P0340 Camshaft Position Sensor Circuit P0341 Camshaft Position Sensor Performance / Rationality P0370 Timing Reference High Resolution Signal "A" P0380 Intake Air Heater #1 Control circuit P0381 Wait-to-Start Lamp Inoperative P0382 Intake Air Heater #2 Control circuit P0460 Fuel Level Sensor A Circuit P0461 Fuel Level Sensor 1 Performance / Rationality P0462 Fuel Level Sensor 1 Low P0463 Fuel Level Sensor 1 High P0477 Exhaust Pressure Control Relay Low P0478 Exhaust Pressure Control Relay High P0480 Cooling Fan 1 Control Circuit/Open 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Cheers! Ryan

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1 Answer

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1 Answer

Engine surges when accelerating in neutral/fuel guage inaccurate


you have two different problems. first your gauge may have a bad ground or bad sending unit . try fuel injector cleaner as they may be gloged for hesitation .

Feb 28, 2009 | 1987 Nissan 300ZX

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