Mazda 323,Mazda 626 & Mazda 929 Whether the compact 323, the mid sized 626, or the full sized 929, these vehicles remain very popular even though production has stopped.

Mazda bg hatch sohc auto to dohc manual conversion

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Old Dec 4, 2023 | 07:24 PM
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Madazmazda's Avatar
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Default Mazda bg hatch sohc auto to dohc manual conversion

Hey guys I got a 1991 Mazda bg ive converted from 1.5 sohc to 1.5 dohc injected I also went from auto to manual conversion . It's all in but won't start up the ecu and engine loome is from the donor car so I thought I would not have issues with tricking car it's in park. I'm trying to avoid changing dash loome is there a sensor or some wiring I need to do I'm not aware of. Any help will be great
 
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Old Dec 6, 2023 | 02:50 PM
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Originally Posted by Madazmazda
Hey guys I got a 1991 Mazda bg ive converted from 1.5 sohc to 1.5 dohc injected I also went from auto to manual conversion . It's all in but won't start up the ecu and engine loome is from the donor car so I thought I would not have issues with tricking car it's in park. I'm trying to avoid changing dash loome is there a sensor or some wiring I need to do I'm not aware of. Any help will be great

Welcome to the forum


Hmmm interesting as that ECU is OBD1 (up to 1995) so it is really on the "dumb" side as ECU were in that era?
 
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Old Dec 6, 2023 | 05:21 PM
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So go the car cranking was a 3 pin plug that use to run to auto box and cut and twisted a red black and blue black wire now I'm getting crank.

New problem no getting fuel I'm about to check relay under ecu and change pump . Old pump worked fine but now won't prime have AFM hooked up no blown fuses so it's gotta be a relay ecu issue if not the pump I'm bout to change
 
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Old Dec 6, 2023 | 08:58 PM
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I've changed fuel pump check relays fuses sprayed ethanol in rail car tried to cough to life how do I hard wire fuel pump to a fuel pump do I need to give anything else power
 
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Old Jul 25, 2024 | 12:26 PM
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Welcome to the forum
 

Last edited by FranklinWrights; Jul 25, 2024 at 12:47 PM.
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