Question about 1996 Nissan Quest
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Posted on Jan 02, 2017
SOURCE: fuel pump removal
Replace Fuel Pump for 1997 Nissan Quest
(1) If the fuel tank has more than one third full, you need to get the gasoline out. If it has one third or less full, you can leave it in the tank. However be very careful around the working area. Make sure you have read fire precautions in a general repair book. Take the fuel pump fuse out from the fuse box near the battery. Run starter for a few seconds. This will remove the fuel pressure in the gas lines. Disconnect battery at negative terminal. Jack up the rear of the van.
(2) Remove the fuel tank protector.
(3) Disconnect fuel pipes at the front end of the fuel tank. Use short pencils and extra rubber hoses to block disconnected pipes and hoses.
There are two pipes connected to the gasoline filler at the side of the van. Disconnect only the smaller one. The larger one is flex enough for the tank to be lowered.
(4) Disconnect the electrical from this connector. Jack the rear end of the fuel tank with a car jack and a piece of 2x4. Put the wood between the jack point and the tank. Then unbolt the two bolts showing in the picture.
(5) Lower the jack after the bolts are removed. The rear end of the tank should be lowered.
(6) Disconnect fuel lines on top of the fuel pump. Reconnect each short hose back to different pipes as shown in picture to block the pipes.
(7) Loose the six mounting bolts on the fuel pump assembly. The bolts should be loosen a little at a time in multiple turns. Also detach the electrical wire holders. After all bolts are removed, carefully take the assembly out of the tank.
(8) Remove the fuel pump from the assembly as shown in picture. Then unplug the electrical wires. Note that two connectors are in different sizes, so that you will not be able to reconnect to a wrong terminal.
(9) Put the new pump and new filter in. Reconnect the electrical wires. If necessary use a pair of pliers to make the connectors tighter. Make sure they are not loose. Reconnect gas inlet to the pressure regulator.
(10) Use a new O ring, put back the assembly to the fuel tank. Make sure the float of the fuel level senser is free, and the assembly is at the right orientation (as shown in picture). Screw back the 6 bolts after making sure the O ring is in right place. The bolts should be tightened in turns. Do not over tighten them. Then reconnect the fuel lines and make sure every fastener is tight. Put the electrical wire into holders.
(11) Jack up the tank and put the two mounting bolt in. (see picture in step 4). Make sure they are tightened with specific torque. Reconnect the electrical connector.
(12) Reconnect two fuel lines at the front side of the tank. Refer to the picture in step 2. Reconnect the hose to the gasoline filler. Before you have a try start, double check if all fuel lines are securely connected and tightened.
(13) Start the engine. You need to crank more than a normal start because the lines were empty. The pressure is built up in some time.
(14) If engine starts ok, turn it off. Then check under the van if there is any leakage. If everything is fine put back the tank protector. (picture in step 2).
Posted on May 05, 2009
the correct way to set the tps on 90+ 300zx is to use a volt meter, set it to x.xx, stick the red part from your voltmeter into the white wire on the TPS 3-wire sensor, black wire goes to black. try to get it to ~.45 volts. thie is critical on automatics, not so much on manuals.
Posted on Oct 19, 2009
The camshaft sensor is located inside the distributor and is part of it, in order to replace it you must replace the distributor,to replace remove the dist cap. mark the location of the rotor,by marking where its pointing to, then mark the dist housing, so now theres a mark on the rotor and housing to show where rotor points, next mark the location of dist going into housing, mark the shaft and the block,because it spins in block this way you can line back up.next remove hold down bolt and pull out,mark the new dist in exacat same spots as the old so you can install back the same,you may have to put it in and pull it out until your marks are lined up,this way the timing will be dead on, when done you can check timing. good luck
Posted on May 09, 2010
SOURCE: 96 nissan quest code p0120
this is an obd2 trouble code table, it can help you understand the meaning of code.
and for p0120
Sticking throttle return spring
MAP or TPS connector corrosion
Misrouted harness causing chafing
If you have access to a scan tool, with KOEO (Key on engine off) observe the TPS voltage. With throttle closed, voltage should be about .45 volts. It should gradually sweep upwards to approximately 4.5 to 5 volts as you depress the throttle. Sometimes only a scope can capture an intermittent glitch in the TPS signal voltage. If you notice a glitch in the TPS sweep voltage, replace the TPS.
NOTE: Some TPS sensors require fine adjustment. If you aren't comfortable with using a DVOM (Digital Volt Ohm meter) to adjust the new TPS, then it's best to take the vehicle to a shop. If the voltage is not .45 volts (+or- .3 volts or so) with the throttle closed or if the reading is "stuck" then unplug the TPS connector. With KOEO check for 5 volts reference voltage present at the connector and a good ground. You can check the signal circuit for continuity by jumping a fused wire between the ground circuit of the TPS connector and the signal circuit. If the TPS reading on the scan tool now reads zero, then replace the TPS. However if that doesn't change the reading to zero, then check for an open or a short on the signal wire and if none is found, suspect a bad PCM. If manipulating the TPS wiring harness causes any change in idle, then suspect bad TPS.
Posted on Jul 13, 2011
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