Motor swap help/won't start after 2013 EB into 2011 EB

[Rmowery1]

I bought a 3.5EB out of a 2013 MKS. Swapped into 2011. Changed cam and crank sensors. Also the plug coils and the flywheel. Put it all back together. It will only crank. But no start. Any help would be a blessing. Thanks.

 

[ToMang07]

Codes?

 

[Rmowery1]

Codes?

P1602

 

[jmr061]

P1602 Immobilizer/ECM Communication Error

 

[rubydist]

That is why it wont start.

Did you change any computer parts?

 

[jmr061]

Any update?


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[SHOdded]

Is the PCM still original from the 2011? I assume the 2011 is a transverse layout? I know, obvious questions, but ...

Looks like a battery and/or wiring issue at this point.

https://shoforum.com/index.php?threads/2011-sho-engine-replace.128938
https://shoforum.com/index.php?threads/2010-to-2015-sho-engine-swap.131474

 

[Rmowery1]

I swapped the sensors and used the original harness and pcm.

 

[Rmowery1]

Spent multiple hours checking fuses,relays,wire harness plugs and grounds today. Still cranks but no fire.

 

[rubydist]

P1602 on a Ford vehicle means that the pcm has disabled the vehicle (it won't start) due to a communication error. You have to get rid of that code and its cause or the engine will never start.

That is why I asked if you changed any computer parts anywhere. So, the possibilities include: wiring harness / connector issues, a bad pcm or other required can-bus item gone bad (note that "gone bad" can include simply having lost their correct programing identifier for the car). Unfortunately, it is not something to diagnose over the internet. It is very likely you will need it towed to the dealer and have them put their scan tool on it to identify which component is the culprit.

 

[RAYJAY]

P1602 on a Ford vehicle means that the pcm has disabled the vehicle (it won't start) due to a communication error. You have to get rid of that code and its cause or the engine will never start.

That is why I asked if you changed any computer parts anywhere. So, the possibilities include: wiring harness / connector issues, a bad pcm or other required can-bus item gone bad (note that "gone bad" can include simply having lost their correct programing identifier for the car). Unfortunately, it is not something to diagnose over the internet. It is very likely you will need it towed to the dealer and have them put their scan tool on it to identify which component is the culprit.

QUICK QUESTION would forscan help with finding the problem

 

[Rmowery1]

P1602 on a Ford vehicle means that the pcm has disabled the vehicle (it won't start) due to a communication error. You have to get rid of that code and its cause or the engine will never start.

That is why I asked if you changed any computer parts anywhere. So, the possibilities include: wiring harness / connector issues, a bad pcm or other required can-bus item gone bad (note that "gone bad" can include simply having lost their correct programing identifier for the car). Unfortunately, it is not something to diagnose over the internet. It is very likely you will need it towed to the dealer and have them put their scan tool on it to identify which component is the culprit.

I feel good about my decision then. I'm having it towed to the dealer today to have them take a look. I'll post an update when I get one. Thanks for everyone's help.

 

[jmr061]

anything yet? curious....

 

[Rmowery1]

anything yet? curious....

Dealer called today, they think it's a PCM. Not 100 percent sure. I'm taking the PCM to sia electronics tomorrow to have checked and rebuilt. Will know more in 3-5 business days.

 

[SHOMON]

Any updates on this??

 

[SHOMON]

Was it the pcm?

 

[SHOdded]

As noted on another thread, it could be a crankshaft tone ring issue. I would check that that is not what is happening here.

 

[Rmowery1]

As noted on another thread, it could be a crankshaft tone ring issue. I would check that that is not what is happening here.

Dealer still can't get car to start. The only thing that didn't get changed is the crankshaft trigger ring/tone ring. They have not been able to get an answer if that is the problem or not. What's your thoughts?

 

[Rmowery1]

Was it the pcm?

New PCM in the car and same issue.

 

[luigisho]

Dealer still can't get car to start. The only thing that didn't get changed is the crankshaft trigger ring/tone ring. They have not been able to get an answer if that is the problem or not. What's your thoughts?

Have you looked at the original thread cited on that issue? Those look very different in tooth count. Try a websearch on that topic and see what pops.