i just got a new ECU for my car (well used actually)..but i had my mechanic run tests on it and everything to make sure its alright blah blah...but its still running like shit and stalling every once in awhile so i took it back and he said that sometimes putting in a new ECU it takes the car a good like hour or so of running to relearn everything...this just sounded a lil weird to me but i dont really know much lol....is this right?
#86552, "RE: Putting in a new ECU" In response to Reply # 1
no way it should take an hour...maybe for a few minutes it'll run a little rough...and/or might not start the first time you crank it over and stall right away after it does start once or twice. I've reset mine several times and replaced it once and never had it take more than a couple of minutes to relearn enough to be driveable.
#86568, "RE: Putting in a new ECU" In response to Reply # 0
yes the ecu does have to relearn certain info like how much fuel to give the motor. I'm not sure but I think it re-programs after 10min at constant 50mph.
#86569, "RE: Putting in a new ECU" In response to Reply # 5
Originally posted by 420a2ner yes the ecu does have to relearn certain info like how much fuel to give the motor. I'm not sure but I think it re-programs after 10min at constant 50mph.
yes, but no. it has a base map to start out with to get it running. it then "relearns" fine tuning aspects of the fuel and timing maps, to put it simply.
USED TO HAVE...Everything you wish you had, and then some...
You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)
#86592, "RE: Putting in a new ECU" In response to Reply # 6
well i gave it back to my mechanic yesterday and he called me today and its FINALLY running good..its weird i dont have any CEL's now lol my dash looks kinda boring..anyway, he said they had to run it at idle for a LONG time (like 30 min) and drive quite a ways..it also had a few wiring problems so maybe he got them fixed 2 and it helped i dunno..and he put a new groudn wire in (i dunno which 1 didnt pop the hood yet)...all i care about is that i finally have a car that works lol Mods: E-bay Intake, Vibrant Muffler, J Woodleys Ground Wire Kit, F&R Upper Strut Bars, B&M Short Shifter
#86593, "RE: Putting in a new ECU" In response to Reply # 7
Originally posted by reeveso well i gave it back to my mechanic yesterday and he called me today and its FINALLY running good..its weird i dont have any CEL's now lol my dash looks kinda boring..anyway, he said they had to run it at idle for a LONG time (like 30 min) and drive quite a ways..it also had a few wiring problems so maybe he got them fixed 2 and it helped i dunno..and he put a new groudn wire in (i dunno which 1 didnt pop the hood yet)...all i care about is that i finally have a car that works lol Mods: E-bay Intake, Vibrant Muffler, J Woodleys Ground Wire Kit, F&R Upper Strut Bars, B&M Short Shifter
Sounds like he had to make a Packy run ("drive quite a ways"). Maybe he had to hit up his dealer. I suspect the "few wiring problems" is what really fixed everything. But great that you have a car that works! MB
#86605, "RE: Putting in a new ECU" In response to Reply # 8
alright well its runnin real good now except its rough when idling..but only if its warm..when its still warmin up its fine..but the engine is kinda like, shaking when it starts acting up..could that be somethin w/ wiring/spark plugs/CAT?
#86607, "RE: Putting in a new ECU" In response to Reply # 6
Originally posted by tim97rs
Originally posted by 420a2ner yes the ecu does have to relearn certain info like how much fuel to give the motor. I'm not sure but I think it re-programs after 10min at constant 50mph.
yes, but no. it has a base map to start out with to get it running. it then "relearns" fine tuning aspects of the fuel and timing maps, to put it simply.
Search
Printer-friendly copy
2 Users in Chat
