Will not start unless pop it

JAMESALLEN

MEMBER
1990 NISSAN HARDBODY
4 CYL
2WD
MANUAL
216,000 MILES

The engine turns over but will not start using key, however it will start and run fine if I pop start it using transmission to start it. Please help. No one I know can figure it out.

Sunday, December 16th, 2018 AT 9:48 AM

7 Replies

DANNY L

MECHANIC
5,648 POSTS

Hello, I am Danny.

Have you looked into the clutch interlock system? I would start there first. Basically it is an electrical circuit and switch so you can only start the truck with the clutch pedal depressed. I have attached a picture. Hope this helps and thanks for using 2CarPros.
Danny-

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Sunday, December 16th, 2018 AT 1:24 PM

JAMESALLEN

MEMBER
4 POSTS

Danny, thank you very much for your reply. Yes, I checked it. Good thinking though. The only reason I thought about it was I had a Toyota that had that problem. Been messing with it and just figured out that it's in the ignition.

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Sunday, December 16th, 2018 AT 2:02 PM

DANNY L

MECHANIC
5,648 POSTS

Hello again.

Okay, Keep us updated. I can look for a steering column/ignition switch if needed. Hope this helps and thanks again for using 2CarPros.
Danny-

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Sunday, December 16th, 2018 AT 2:31 PM

JAMESALLEN

MEMBER
4 POSTS

Thank you very much.

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Sunday, December 16th, 2018 AT 8:00 PM

DANNY L

MECHANIC
5,648 POSTS

You're welcome!

I've attached a wiring diagram for your trucks starting system. I've also attached a tutorial showing how to test wiring.

https://www.2carpros.com/articles/how-to-check-wiring

Hope this helps and thanks again for using 2CarPros.
Danny-

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