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Swapping engine Motor seized up will not turn over?

Tiny
TRAVISRUTH9
  • MEMBER
  • 2005 HYUNDAI ELANTRA
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
The car caught fire a couple years ago and since I've replaced the entire wire harness and various other parts. Got power to the motor finally but after sitting for a while. Motor seized up. Won't turn over. I purchased a motor to put in it. Another 2.0. Now my question is should I purchase the PCU that matches the motor I bought? The one that's in the car originally is throwing a p0885 code.
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Monday, September 16th, 2024 AT 3:06 PM

9 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Nope, you don't need the PCM for the new engine, just make sure to transfer over all sensors and brackets that are needed for the installation. The P0885 code for a 2005 Hyundai Elantra refers to a TCM Power Relay Control Circuit Open so I would check the TCM fuses and grounds. Here is a guide to help you and the TCM location so you can swap it out if the power and grounds are good.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Here are the TCM wiring diagrams so you can see which fuses to check and the ground circuits as well. Check out the images (below). Please let us know what happens.
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Monday, September 16th, 2024 AT 5:58 PM
Tiny
TRAVISRUTH9
  • MEMBER
  • 3 POSTS
Will the car start with that code showing?
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Wednesday, September 18th, 2024 AT 10:03 AM
Tiny
TRAVISRUTH9
  • MEMBER
  • 3 POSTS
Because right now after everything I've done. I just want to hear it run. Doesn't have to move, just run.
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Wednesday, September 18th, 2024 AT 10:04 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
No, the TCM failure will not hinder the engine from running. Let me know how it goes.
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Wednesday, September 18th, 2024 AT 5:36 PM
Tiny
JASONRUTH9
  • MEMBER
  • 58 POSTS
The car crank up and ran. After 3 years and a lot of work and help from you guys she runs. Haven't driven it yet but the hard part is behind me now.
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Wednesday, October 9th, 2024 AT 8:19 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Good to hear! So what fixed it?
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Wednesday, October 9th, 2024 AT 10:18 AM
Tiny
JASONRUTH9
  • MEMBER
  • 58 POSTS
Just bolted the engine up. Had to have another starter. The brand new starter I got from rockauto wasn't any good so I ordered another from Amazon. Hooked it up and got gas flowing. She fired right up. Still need a radiator and a few hours before I can actually drive her. But she started.
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Wednesday, October 9th, 2024 AT 11:23 AM
Tiny
JASONRUTH9
  • MEMBER
  • 58 POSTS
And hooked up my code reader and she'd throwing all kinds of codes now. But I think it's because I still have connections to hook up.
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Wednesday, October 9th, 2024 AT 11:24 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Nice work! Use 2CarPros anytime, we are here to help. Please tell a friend.
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Thursday, October 10th, 2024 AT 11:29 AM

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