help error 0340

[easymon]

Hey guys need help ' while tunning truck to day got about half wat through tunning and got 0340 error and the lift pump stays running wont stop even when trying to start tunning over so truck is dead till figure it out. thanks shannon.

[FUBAR]

Turn key off. Disconnect V2 from truck, and laptop if connected. Wait at least 10 sec, try again. Exit out and reopen scan and tune if flashing thru laptop. Not needed but peace of mind. Had this happen to me as well. The ECM just doesn't want to talk to you at that particular moment...

[easymon]

thanks will try that but the why is my fass pump keep cycling simes that the ecm is stuck even when i tryed to reprogam it keep cycling like yourprogaming but your not.

[easymon]

Thanks fubar restarted laptop re pluged in apump was still cycling but stoped once it started to erase alls good thanks for quike reply. Shannon ps. Have 1 other? Why do the sae engine coolant pid show -40 the other reads right just did not now if i had a problum. Thanks

[FUBAR]

Weird, I know.