1989 Acura Legend check engine light does not come on & no red or yellow lights on ECU?

10

Asked by Oct 17, 2015 at 09:04 PM about the 1989 Acura Legend

Question type: Maintenance & Repair

Cannot pass smog with no check engine light that comes on for 2 seconds then goes out. ECU is not displaying any lights; let alone blinking! Checked bulbs, fuses & connections. Is it the ECU gone bad? Possible water damage?

3 Answers

8,590

Most emission inspectors require WEEK after the CEL comes on ,,, even for a second. ECU probably OK .. I suspect an O2 sensor is going bad ... easy to change .. all you normally need is a spark plug wrench and a jack, ( O2 is normally at the rear of the converter)

10

So no blinking red light on ECU to identify code; no light at all, instead of 2 blinks? O2 sensor; ok. Will give it a try thanks. Does ECU need re-programming if replaced?

1 out of 1 people think this is helpful.
8,590

Nope .. it shouldn't .. one thing is a little strange regarding the Flashing light as soon as you start .. The O2 circuit is on a time delay that allows the engine to get hot before the ECU begins looking for a signal. That alarm must be stored in the ECU and it should give you a specific origin ,,, find a friend with a scanner and perhaps the code will help find it

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Legend

Looking for a Used Legend in your area?

CarGurus has 31 nationwide Legend listings and the tools to find you a great deal.

ZIP:

Search Acura Legend Questions

Acura Legend Experts

#1 maddison
maddison
Reputation 250
#2 Logan Saunders
Logan Saunders
Reputation 180
#3 Monique Bell
Monique Bell
Reputation 150
View All

Related Models For Sale

Used Honda Accord
758 Great Deals out of 87,618 listings starting at $1,250
Used Acura Integra
104 listings starting at $1,900
Used Honda Civic
498 Great Deals out of 88,833 listings starting at $1,499
Used Chevrolet Camaro
144 Great Deals out of 32,807 listings starting at $1,995
Used Honda Prelude
106 listings starting at $2,995
Used Nissan Maxima
282 Great Deals out of 26,375 listings starting at $1,989