Does the ECM taken from the same model Saturn and engine have to be reprogramed?

Tiny
BOBH11
  • MEMBER
  • 2001 SATURN L300
  • 177,000 MILES
2001 saturn L300 - does a ecm have to be reprogrammed if taken from the same model, year and engine?
Monday, August 29th, 2011 AT 8:22 PM

6 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Its possible to do what your asking you will have to relearn the pass lock so it will start. So why do you think you have a bad ecm?
Was this
answer
helpful?
Yes
No
-1
Monday, August 29th, 2011 AT 8:25 PM
Tiny
BOBH11
  • MEMBER
  • 5 POSTS
I was getting too many codes on the scanner (33). Can't be that many things wrong. Last ditch try was the ecm.
Was this
answer
helpful?
Yes
No
+1
Monday, August 29th, 2011 AT 8:29 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Most of the ecms I replaced on those cars were because of the scanner not being able to talk to the ecm. What are the codes your getting?The exact code numbers not code descriptions.
Was this
answer
helpful?
Yes
No
+1
Monday, August 29th, 2011 AT 8:33 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Have you tried diagnosing any of those codes to see if it lead to a bad ecm?
Was this
answer
helpful?
Yes
No
Monday, August 29th, 2011 AT 8:36 PM
Tiny
BOBH11
  • MEMBER
  • 5 POSTS
Codes are now down to 3 : P0102, P0727, and P1780. The one Po102, I tracked to a bad air flow sensor because of the low ohms.
Was this
answer
helpful?
Yes
No
Monday, August 29th, 2011 AT 8:41 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Alright with those codes I think your barking up the wrong tree with replacing the ecm.I think you posted another question here today talking about a stall and no start for 30 mins?Lets start with the P0727 engine speed signal fault I have seen a lot of those engines set that code usually caused by a bad crank shaft position sensor especailly with those symptoms. Do you have a multimeter?We can easily check the crankshaft postion sensor when it doesnt start with a quick ohms check.
Was this
answer
helpful?
Yes
No
Monday, August 29th, 2011 AT 8:55 PM

Please login or register to post a reply.

Sponsored links