Engine still running after key has been removed

[FrankV35]

Hi,

Just wondering if anyone has ever come across this issue or can give me some advice.

I own a 2004 Nissan V35, about a week ago I started experiencing this strange issue where after I remove the key from the ignition the engine is still running. 

The engine stays running for about a minute then will switch itself off, at about the 30 second mark the A/C turns on and can here the fans from the engine bay.

The car is definitely non turbo and does not have a turbo timer (which some people have suggested).

I have had it inspected by an auto electrician but they could not find the source of the problem. They ruled out the Alternator, Alarm System and Ignition Switch.

I hope someone can help.

Thanks  

[Nicko_2010]

May be ECM was reprogrammed for a turbo model/stagea and then was swapped and installed in your car temporarily... 

To see both ECMs (gear box and car) which are located under glove box on the passenger side you'll need to pop up rubber sealant from the bottom of the door frame where is @Skyline@ written, couple screws off under a glove box itself, then finally take the black plastic cover off where you should see ECMs and their part number or amended wiring

[FrankV35]

13 minutes ago, Nicko_2010 said:

May be ECM was reprogrammed for a turbo model/stagea and then was swapped and installed in your car temporarily... 

To see both ECMs (gear box and car) which are located under glove box on the passenger side you'll need to pop up rubber sealant from the bottom of the door frame where is @Skyline@ written, couple screws off under a glove box itself, then finally take the black plastic cover off where you should see ECMs and their part number or amended wiring

I dont think that it is something that has been programmed into the car, I have owned it for 8 years and this has never happened until now.

It seems to me like something is faulty but not sure what it might be.

[Nicko_2010]

sorry misundestood

[niZmO_Man]

Immobiliser?

[FrankV35]

3 hours ago, niZmO_Man said:

Immobiliser?

The auto electrician said the immobiliser is part of the after market alarm system which they tested.

[V35_Paul]

What's the brand and model of your after market alarm system?