1986 Chrysler Le Baron Changeout ECU

FELDER

MEMBER
1986 CHRYSLER LE BARON
4 CYL
2WD
AUTOMATIC
147,000 MILES

I'm buying a 1986 LeBaron and the current owner just today changed out the ECU and now the car won't start. He has no idea what he did wrong. Can you tell me why it won't start with brand new ECU?
Thanks,
Bob

Thursday, October 21st, 2010 AT 9:41 PM

3 Replies

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Hello and thanks for donating

Did the vehicle start with the old computer? The new ECU may need to run through a relearn procedure but the vehicle should still start even if this was the case, it would just run poorly.

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Thursday, October 21st, 2010 AT 10:59 PM

FELDER

MEMBER
3 POSTS

Here is what happened and YES, the car worked before new ECU install. He put it in new ECU because the DASH board lights were fine on the sides but DIM in the middle. I don't know if the ECU controls that or not.

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Sunday, October 24th, 2010 AT 9:32 PM

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Which lights? The lights behind the instrument panel where the gauges are? Seems like a bulb may have just burned out which would cause a dimmer lighting in the panel. Could also be ground wire issue. Not sure why he went to the ECU as a fix. Does he have the old computer? Swap it back and see if it fires up then?

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Sunday, October 24th, 2010 AT 9:53 PM