Rapid Flashing SES
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Joined: Jun 2006
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From: North Alabama
Car: 1986 IROC-Z
Engine: 305 T.P.I.
Transmission: 700R4
Axle/Gears: 3.23
Rapid Flashing SES
I tried clearing the codes on my car by removing the connector at the battery, now when I start my car the SES flashes very rapidly. Is it a bad ECM or what?? Thanks, 1BAD86
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Rapid Flashing SES
A rapidly flashing SES is a bad checksum on the PROM. Sounds like the ECM went out and has maybe been on the way out for a while.
Or, the PROM happended to go bad the same time as you reset the ECM.
Pop the MEMCAL out of the socket and re-seat it. See if that takes care of the flashing SES issue.
If so, then start the engine. Then tap on the ECM case. If the engine stumbles as you do this then the ECM is bad.
RBob.
Or, the PROM happended to go bad the same time as you reset the ECM.
Pop the MEMCAL out of the socket and re-seat it. See if that takes care of the flashing SES issue.
If so, then start the engine. Then tap on the ECM case. If the engine stumbles as you do this then the ECM is bad.
RBob.
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