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QR25 2.5L Engine Engine Discussion: 2002+ Sentra SE-R and SpecV

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post #1 of 4 Old Apr 23rd, 2019, 10:20 AM Thread Starter
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Hard to start

Hey I am new to here I am having a problem with my QR25 each time I try starting the starter roll over but it won't start but when I prime it start and Rev out perfect and throttle good what is the problem. Thanks

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post #2 of 4 Old Jul 7th, 2019, 10:30 PM Thread Starter
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Good evening, I am having a problem, I am wondering if I could get some assistance I have a Nissan Serena with a qr 25 motor it is not starting checked and there is no curgent by the plugs when I scanned it the code show U1000 saying it lost communication would really appreciate the help
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post #3 of 4 Old Jul 8th, 2019, 09:05 AM
Sup Mod keeping the peace
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The U1000 fault code indicates that the ECU lost communication to the CAN line. Possible causes are: Harness or connectors (CAN communication line is open or shorted). Check the harness connectors at the ECU for tightness and check for any oxidation on the pins.

The CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent).

KA-T for life, yo!
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post #4 of 4 Old Jul 8th, 2019, 10:53 AM Thread Starter
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Thanks for your respond Rogoman but I had already checked the horNess ,wash out the connectors to the computer and blow it out then spray WD40
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