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Nec mr301 n9 9g3

Replacement relays needed

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They are replaceable. Common reasons for replacement include noise and low oil pressure. Replacement bearings come in standard as well as various undersizes, so rule number one is to make sure the bearing size matches the crank journals.


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pull the fuel pump relay and see if it stops. If it does replace the relay with another relay with the same part number in the relay box. If the pump stays off than the relay was bad and needs to be replaced.

if the pump continues to run with out the relay than the power supply to the pump is shorted to power. you will need to dig into the harness to find it.

if the pump stops with the relay out and starts again with the swapped relay let me know and i'll get you some more info

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I have a '97 pathfinder (auto air - climate control feature) with the same problem...I came here looking for info as I just spent a couple of hours in my driveway messing around. Here is what I do know...mine started last winter and to get a break from the fan noise I would pull the relay block. (I replaced the relay but still had the same problem) The relay block is located behind the ashtray near the fusebox. There are 3 large relay's (1.5"x1.5") and it is the one higher and in the center. Removing this will cut the power to the fan. (By the end of the winter I got pretty good at removing it and replacing it while driving.) Anyway we pulled the glove box and found the resistor. There was a wire connector running into it with a white plastic cap held in by 2 screws. When you pull it out the base is a metal cast housing with finger-like probes (I assume to read the temperature in the airbox). Inside there is a small curcuit board with the resistors and this board is connected to a NEC chip. I have not been able to find the exact chip online yet but a quick search found a close number and the description was a "high speed switch". I took a picture of the part and sent it to a dealer and was qouted $246.00 (Can). My Pathfinder is rough and I don't plan on keeping it long so I don't want to pay the dealer price so here are the options I have considered...Aftermarket...no luck, junkyard...no luck in my area, find Nec chip...need to search some more, Add a new switch...tonight I wired a 3-way toggle switch directly to the coupler that used to connect to the resistor assy. I was able to turn the fan on and off for $3.99. Now I need to find out how to connect a resistor to the switch to have a reduced speed setting._'_If anyone has any ideas on how to set this up or find the prpper part at a resonable price...please let me know.

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Your Starter Relay, located in the Relay/Fuse Box/Panel is sticking and causing the Starter "Run-On".
Locate the Starter Relay in the Relay/Fuse Box/Panel.
The identification and location of the Relays/Fuses should be located in your Owners Manual, or on the inside rear Cover.
There are usually Relays in the Box/Panel which are the same Type (size and shape). Switch out the suspected bad Starter Relay with another non-engine Relay that is KNOWN to work.
Recheck the operations of both these functions.
If the Starter is not still experiencing "Run-On" and the other function is now malfunctioning. The suspected Relay is bad and needs to be replaced.
Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

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