Immobilizer light will not turn off after changing the engine

KYLEZZZ

MEMBER
2007 FORD RANGER
3.0L
6 CYL
2WD
MANUAL
190,000 MILES

Hello, I need help. I changed the engine in my truck and tried starting it, but when I turn the a relay fuse clicks really loud and the immobilizer light constantly flashes. The truck wont crank.

Sunday, September 22nd, 2019 AT 5:31 PM

3 Replies

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

Let's try a security system/anti-theft reset first.Here is the tutorial showing what is involved:

https://www.2carpros.com/articles/how-to-reset-a-security-system

After reading scroll down the page to find Ford.Hope this helps and thanks for using 2CarPros.

Danny-

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Sunday, September 22nd, 2019 AT 6:18 PM

KYLEZZZ

MEMBER
2 POSTS

So I had a guy come program a key and try to remove the immobilizer lock and he said he could get into the cluster settings or something like that and said the relay in the engine bay keeps clicking in the on position. I still can't start the truck.

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Tuesday, September 24th, 2019 AT 5:40 AM

KEN L

MASTER CERTIFIED MECHANIC
48,397 POSTS

Did the security light stop flashing? If so lets check to see if the starter is getting a signal. This guide should help:

https://www.2carpros.com/articles/starter-not-working-repair

Please run down this guide and report back.

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Friday, September 27th, 2019 AT 5:18 PM