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Rex/Regina Ignition Coil/Amplifier - Engine cutting out 700 1990

posted by  B.B. on  Tue Mar 14 10:34 CST 2023
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last visit: Mon Oct 6 13:15 CST 2014
[RELATED]

Hi Heyu,

Will the engine fire with some starter spray in the intake?

Maybe the RSR failed?
The injectors get the +12 volts via the RSR
and the ground side (Switching) is via the ECU.

The Fuel relay has two separate functions:
One is to power the fuel pump via Fuse 11
Two is to power the ECU and RSR.

You can check with your meter to see what is wrong.
The Green/Red wire from the RSR pin 3 to the injectors should be a steady +12V
if that's missing
Check for +12V at RSR pin 4 (brown wire) and RSR pin 2 (blue/yellow wire)

If either relay socket has a loose pin it can become intermittent.
The Bullet connector for the RSR can fail where the neoprene or whatever
spacers disintegrate with old age and then the connector doesn't mate up
right.

Check and service connectors carefully.
Don't use solvent on bullet connectors, you can destroy the spacers.

Good luck, Bill






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