Engine and RPM problems on a Nissan Qashqai

Good day, I own a 2013 Nissan Qashqai with a 1.6 dci (R9M) diesel engine and 270,000 km on the odometer. I have a problem that when the car warms up and the outside temperature is higher, the RPMs start to drop and the gauges on the dashboard jump around. The engine, ESP, 4WD warning lights, and an orange exclamation mark illuminate. The engine fan turns on and off intermittently. After the car cools down, it behaves normally. Based on diagnostics, I replaced the glow plugs, but the problem persists. Thank you for any advice.

(Translated from Slovak)

5 comment(s)

Check the battery and alternator to ensure they are providing consistent voltage, as electrical issues can cause erratic gauge behavior and warning lights. Make sure the battery terminals are clean and secure. Let me know if this resolves the issue or if you need further assistance.

Quotation:
@CarlyMechanic wrote on
Check the battery and alternator to ensure they are providing consistent voltage, as electrical issues can cause erratic gauge behavior and warning lights. Make sure the battery terminals are clean and secure. Let me know if this resolves the issue or if you need further assistance.

I put in a new battery, and the alternator is charging and the terminals are clean. The problem persists as I described.

(Translated from Slovak)

Quotation:
@Jozef wrote on
I put in a new battery, and the alternator is charging and the terminals are clean. The problem persists as I described.

Inspect the engine's ground connections for any corrosion or looseness, as poor grounding can cause electrical issues. Pay special attention to the main ground strap between the engine and the chassis. Let me know if this helps or if you have further questions.

Quotation:
@CarlyMechanic wrote on
Inspect the engine's ground connections for any corrosion or looseness, as poor grounding can cause electrical issues. Pay special attention to the main ground strap between the engine and the chassis. Let me know if this helps or if you have further questions.

I've already checked it, and it's okay, the problem still persists

(Translated from Slovak)

Quotation:
@Jozef wrote on
I've already checked it, and it's okay, the problem still persists

Consider checking the engine coolant temperature sensor, as it might be giving incorrect readings when the engine warms up, causing erratic behavior. If the sensor is faulty, it can affect engine performance and trigger warning lights. Let me know if this helps or if you have further questions.

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