bad ECM/ECU
Thread Starter
Joined: Jun 2002
Posts: 1,084
Likes: 3
From: Clarksville, TN
bad ECM/ECU hey guys... my lt1 project i have is messing up. it has been sitting for about a month, and i went to start it today and it was running all crazy. it would fire up, but the tach would not be reading. then all of a sudden it will die.
after that, i would turn the key on and they tack will do a crazy little dance then settle down. i try to start it, and it sounds like it is firing 180* off. it will go back and forth between those 2 things randomly... any thoughts? only thing i can think of is get another ecu. TIA
after that, i would turn the key on and they tack will do a crazy little dance then settle down. i try to start it, and it sounds like it is firing 180* off. it will go back and forth between those 2 things randomly... any thoughts? only thing i can think of is get another ecu. TIA
Thread Starter
Joined: Jun 2002
Posts: 1,084
Likes: 3
From: Clarksville, TN
it has a new battery in it, but was drained pretty low trying to get it to start. plug wires are all good... double and triple checked them. i still have to hook up a scanner to it to see what kind of codes it is throwing.
but will a bad ground allow it to run occasionally? also i can start it up and the tach wont be working.... i hold the rpm at around 3k, and then it will just shut off or it will go down to idle and barely run sounding like it is firing 180* off
but will a bad ground allow it to run occasionally? also i can start it up and the tach wont be working.... i hold the rpm at around 3k, and then it will just shut off or it will go down to idle and barely run sounding like it is firing 180* off
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TECH Enthusiast
Joined: Nov 2004
Posts: 660
Likes: 0
As stated the first thing you need to do is check battery voltage. Charge it up anyway if it's been sitting for a month. If this isn't your problem then move on to something else.
Last edited by RoAdRaGe912; Nov 2, 2008 at 04:37 AM.
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