Best Answer

It's on the front passenger floor board....Disconnect Negative battery terminal. Remove the carpet from the top. Remove the ECU cover. Remove the ECU retaing screws. Disconnect the connector and pull out the ECU..........Installation in reverse.....

User Avatar

Wiki User

2006-04-13 16:39:42
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: Where is the ECU on a 1991 Honda Civic DX and how do you replace it?
Write your answer...
Still have questions?
magnify glass
Related questions

How do I reset the ECU in my 2000 Honda Civic ex?

How i reset the computer on Honda civic ex 2.000

Honda Civic 1989 over reving?

If a Honda Civic is over revving than there may be a problem with the ECU. One of the functions of the ECU is to prevent the engine from over revving.

A complete wiring diagram for 1994 Honda Civic is?

what are the wires to power up the ecu on a 1994 Honda civic si

Where is vehicle speed sensor located on 91 Honda civic '?

in the ecu

Where exactly can you find ecu main chip on Honda civic 95 coupe sohc engine d15b7 101 hp?

The main chip of a 1995 Honda Civic is found inside the ECU. The chip is clipped on, on the upper left side of the ECU.

Where is the ecu on your 99 Honda Civic?

behind the passenger side kick panel

Where is the tcu located on a 1999 Honda civic ex?

For an OBD2-b (1999+) civic, the TCU is built inside the ECU.

Where is the ECU in your 1996 Honda Civic?

Passenger side bottom right next to the door

Where is the ECU located on a 1999 Honda Civic SI?

below on the right. by the passengers leg

What part of the numbers on a Honda Civic ecu need to be matched?

the last 4 numbers

Where is it and how is the ECU removed from a 1991 Honda Civic DX?

The ECU is located at the passenger's angled foot rest under the mats. It is held in place by a cover and 4 nuts on fixed studs. Three connectors with push releases are attached to it.

Wiring diagram for 99 Honda civic ecu?

A wiring diagram, for your 1999 Honda Civic, can be obtained from most Honda dealerships. The wiring diagram can be found at most auto-parts stores.

People also asked