Question about 1999 Infiniti.5 QX4
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Posted on Jan 02, 2017
some times it might be that it just needs to be sanded down or there is too much break dust. so just spray it down with a power wash and if it doesn't work try to sand down the roaters. but be carefull.
Posted on Jun 28, 2008
There are only to Catalysts monitored by the ECM. There is a wide pipe near the front of the exhaust system that looks like it houses a catalyst, but it doesn't. Look for the rear O2 sensor, that is where the catalyst is. If the bolts that hold it on are not badly rusted, and depending on your mechanical aptitude you could replace them, otherwise take it to a shop. Have you checked the warranty coverage with the dealership?
Posted on Nov 26, 2008
This link shows the location of the SCV, If your motor is different the location should be similiar. http://img510.imageshack.us/img510/5687/vacuumdiagramuh3.jpg
There's a vaccuum line that runs off the SCV to the SCV check switch.
P0442: Have you inspected the lines, charcoal cannister etc? Make sure the fuel cap is tight. The easiest way to check the system is to have someone perform a smoke test. I had a DTC on my car which indicated a EVAP problem, it turned out to be the Fuel tank evaporator Control Solenoid.
Posted on Sep 22, 2009
SOURCE: 1998 infiniti qx4
shift solonoid b is in the transmission. not a do it
yourself situation. clear the codes and drive , see
if it comes back before you take it in for repair.
also check wiring going to trans. look for broken
wires and wires that are rubbed through
Posted on Nov 22, 2009
Know swnsor is located in the valley of engine block to change you have to remove the intake manifold to access the sensor.Thanks good luck and I hope your opinion
Posted on Jan 29, 2010
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