1984 camaro z28 ECM removal
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1984 camaro z28 ECM removal
I have recently put in a new engine, 305 same transmission, I removed all smog has hedman headers, Holley manifold and carb, and vacuum advance distributor already. I want to rewire the car to just have starter, ignition, alternator, and battery cables. Can anyone help me out on if I can remove ECM and rewire it and where I might find a diagram on how to rewire it
Joined: Aug 1999
Posts: 5,280
Likes: 473
From: RI
Car: 1984 Camaro Berlinetta
Engine: LT1
Transmission: T56 6-speed
Axle/Gears: 4.11 LS1 Rear End
Re: 1984 camaro z28 ECM removal
You don't need to re-wire anything.
Unplug the ECM harness at the ECM.
Pull the harness ECM harness thru the hole behind the pass kick panel and into the engine bay.
Un-plug each ECM harness connector from every connection under the hood.
Place the ECM and harness into a box.
Done.
The things that you mention ( Alt, Distrib, Starter,....... ) are all wired thru the 84' ENGINE wiring harness so removing the ECM / harness will not effect any of that.
Be advised.... by removing the ECM you are also removing the TCC lock-up. I'd suggest installing an aftermarket TCC lock-up switch or fabricating your own TCC lock-up. ( SEARCH the forums for more info on TCC lock-up. )
Unplug the ECM harness at the ECM.
Pull the harness ECM harness thru the hole behind the pass kick panel and into the engine bay.
Un-plug each ECM harness connector from every connection under the hood.
Place the ECM and harness into a box.
Done.
The things that you mention ( Alt, Distrib, Starter,....... ) are all wired thru the 84' ENGINE wiring harness so removing the ECM / harness will not effect any of that.
Be advised.... by removing the ECM you are also removing the TCC lock-up. I'd suggest installing an aftermarket TCC lock-up switch or fabricating your own TCC lock-up. ( SEARCH the forums for more info on TCC lock-up. )
Junior Member
Joined: Jul 2022
Posts: 5
Likes: 0
From: Lancaster
Car: 1984 Chevy Camaro
Engine: V8 305 5.0L
Transmission: Stock
Axle/Gears: Stock
Re: 1984 camaro z28 ECM removal
You don't need to re-wire anything.
Unplug the ECM harness at the ECM.
Pull the harness ECM harness thru the hole behind the pass kick panel and into the engine bay.
Un-plug each ECM harness connector from every connection under the hood.
Place the ECM and harness into a box.
Done.
The things that you mention ( Alt, Distrib, Starter,....... ) are all wired thru the 84' ENGINE wiring harness so removing the ECM / harness will not effect any of that.
Be advised.... by removing the ECM you are also removing the TCC lock-up. I'd suggest installing an aftermarket TCC lock-up switch or fabricating your own TCC lock-up. ( SEARCH the forums for more info on TCC lock-up. )
Unplug the ECM harness at the ECM.
Pull the harness ECM harness thru the hole behind the pass kick panel and into the engine bay.
Un-plug each ECM harness connector from every connection under the hood.
Place the ECM and harness into a box.
Done.
The things that you mention ( Alt, Distrib, Starter,....... ) are all wired thru the 84' ENGINE wiring harness so removing the ECM / harness will not effect any of that.
Be advised.... by removing the ECM you are also removing the TCC lock-up. I'd suggest installing an aftermarket TCC lock-up switch or fabricating your own TCC lock-up. ( SEARCH the forums for more info on TCC lock-up. )
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Joined: Sep 1999
Posts: 3,047
Likes: 826
From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Member
Joined: Nov 2002
Posts: 479
Likes: 15
From: Washington State
Car: '84 Berlinetta
Engine: ZZ4
Transmission: BTOD stage 3
Axle/Gears: 3.23 posi disc
Re: 1984 camaro z28 ECM removal
Why bother removing it at all? Its under the dash and takes up no space, if you are running aftermarket igniton and fuel systems it doesnt interfere but does provide benefit through the torque converter lock up and other sensors such as the low coolant level and over temp light. The wiring is not an issue if you are proficient at figuring out what does what.
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