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Thread: Newbie FAQ
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Old 09-01-05, 08:21 PM   #2 (permalink)
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Newbie FAQ Addition #1
(posts 2-11 were deleted to eliminate clutter between main post and this addition, but credit was given to anyone who gave suggestions in those posts)

BHG (Blown Headgasket)
This is one of the most common problems that occur in the 2nd Gen Legends...
Overheating 101
long story short, if you see white smoke coming from the exhaust when you idle or accelerate, its probably a BHG

To fix a BHG is costly as hell , is hard as hell to do yourself , and practically impossible to do without the right parts so many members here would just suggest that you replace it with a completely different engine (preferably a JDM because of low mileage ) or you could spend up to $1500 to take it somewhere to get it fixed, and probably have the gasket blow again on you in 50,000 miles

How do you prevent this from happening to your Legend you ask? Just make sure you do all the scheduled maintenence and take care of your cooling system, DON'T let your engine overheat!

VSS (Vehicle Speed Sensor)
If your speedometer is going completely nuts (showing completely wrong readings or reading 0 MPH)
and your D4 indicator light in the dash cluster is on, chances are, you have a BAD VSS...

the new part will run you between $150-300 depending on where you go (buying new from Acura "stealership" will definately be around $300)

Clockspring (aka cable-reel assembly)
No, this isnt the spring that holds the lil door next to the clock in the console lol
This is what enables the buttons on the steering wheel to work while turned.
If your horns, cruise control, or volume buttons aren't working, its probably a BAD Clockspring...

this part will run you about $270 NEW
DONT buy this part used...most members here who have changed their clocksprings suggest that if yours breaks, don't cheap out and buy a used part because more than likely it will break AGAIN, and in the long run you'll just screw yourself over having to replace the part over and over again

RWD Acura Legend????
*sigh*....before it's asked again, YES it can be done...but it'll cost upwards of $15,000 to complete's really not even worth it unless you just have money burning a hole in your pocket.
(For more information, just search for "RWD Legend"...there's countless threads with the explaination of what must be done and how much it will cost)

Stock Alarm System Problems
If your stock alarm system goes off repeatedly while the doors are unlocked, your door lock actuator has gone bad. To temporarily disable the alarm you can do it with a paperclip. Pop the hood and feel behind the latch for the wire. Disconnect it and stick a paperclip bent in a U into the female end that goes under the radiator. Tape it all up with electrical tape and you are done. Your alarm will now think your hood is always open and never arm.


2nd Gen Stereo FAQ

Stereo Systems
1991-1993 Base ---- Honda
1991-1995 L ------- Standard Bose
1991-1992 LS ------ Bose
1993-1995 LS ------ Bose Premium
1994-1995 GS ------ Bose Premium
1995 SE ------------ Bose Premium

CD Changer
The Alpine CHA-S634 is an aftermarket 6 disc CD/MP3 changer that WILL fit into the trunk sleeve and run from the stock headunit, although the following conversion cables will need to be purchased:
Ai-Net to MBus Adapter
Honda / Acura to Alpine Adapter
{See Thread}

Vehicle Identification (VIN)

The following is a breakdown of what your 17-digit Acura Legend Vehicle Idenfication Number (VIN) denotes:

Digit 1-3 - Manufacturer
JH4 = Honda Motor Co. LTD

Digit 4-6 - Body Type
KA2 = 86-87 4 Door Sedan
KA3 = 87-90 2 Door Coupe
KA4 = 88-90 4 Door Sedan
KA7 = 91-95 4 Door Sedan
KA8 = 91-95 2 Door Coupe

Digit 7 - Body Style/Transmission Type
1 = Coupe, manual
2 = Coupe, automatic
5 = Sedan, manual
6 = Sedan, automatic

Digit 8 - Option/Trim Package
3 = 86-90 Standard (No Sunroof)
4 = 86-90 Standard (Sunroof)
5 = 86-90 Leather Interior
6 = 86-95 L Trim
7 = 86-95 LS Trim
8 = 93-95 GS Trim
9 = 93-95 SE Trim

Digit 9
Check digit

Digit 10 - Production Year
G = 1986
H = 1987
J = 1988
K = 1989
L = 1990
M = 1991
N = 1992
P = 1993
R = 1994
S = 1995

Digit 11 - Assembly Plant Location
C = Saitama, Japan

Digit 12-17
Individual vehicle serial number

For example:
JH4KA8175RC000001 is a 1994 Legend LS Coupe - Manual Transmission
JH4KA7265PC000002 is a 1993 Legend L Sedan - Automatic Transmission

-ECU Codes-

Getting that little Check Engine lights on your dash may seem a little discomforting. In reality it is really a miracle of engineering and computer technology. Instead of randomly pocking in vast amounts of wires, sensors, and mechanisms in such complex car as a Legend, this little light tells you that your computer knows exactly what is wrong with the car (most of the time).

That means the exact sensor or gate has been pin-pointed as being either partially disconnected or simply out of acceptable range.

Location of ECU on 1986-1990 Legends

The control unit is located under the passenger seat on sedans and under the passenger foot well carpet on the coupes.
The engine CPU is the form of an aluminum box with a little plexiglass window. All you have to observe is a little red LED.

Location of ECU on 1991-1995 Legends

On the 1991-1995 Acura/Honda Legends, you have to jump a service connector located on the passenger side right under the dashboard near the door. The connector has two pin inputs. Connecting them with something like a paper clip will force the check engine light on the dashboard to display the codes.

Extracting Codes

With the car either running or the key in the ON position, perform the necessary steps above and observe the blinking of the light. The light will blink displaying all the codes in sequence and then repeating them.

Reading Codes

The code numbers are read by counting the number of blinks between longer pauses. On 1986-1990 Legends, the code number is indicacted by a series of rapid LED blinks between longer pauses.

On 1991-1995 cars, codes 1-9 are indicated by a series of short flashes; two digit codes use a number of long flashes for the first digit followed by the number of short flashes for the second digit. So a code 43 will be represented by 4 long and 3 short flashes.

The position of codes in a sequence can be helpful in doing diagnostics. A display showing 1-1-1-pause-9-9-9 indicates two problems occurring at different times. A sequence showing 1-9-1-9-1-9 indicates two problems occurring at the same time.

Resetting ECU

Sometimes it may be useful to reset the ECU memory. Although that maybe done by removing the battery for around 20 minutes or so, this will also kill your clock and radio presets. A more elegant way is to:

on 86-90 Legends remove the alternator fuse for 20 seconds.
on 91-95 Legends remove the ACG fuse in the interior fuse panel for 20 seconds. (note that this will also clear the seat memory)


Below are trouble codes for 86-95 Acura/Honda Legends:

1986-1990 Legend (G1)
Code # Explanation
1 Front Oxygen Sensor
2 Rear Oxygen Sensor
3 Manifold Absolute Pressure Sensor
5 Manifold Absolute Pressure Sensor
4 Crank Angle Sensor
6 Coolant Temperature Sensor
7 Throttle Angle Sensor
8 Top-Dead-Center Position Sensor
9 Number 1 Cylinder Piston Position
10 Intake Temperature Sensor
12 E.G.R. System
13 Atmospheric Pressure Sensor
14 Electronic Idle Control Module
15 Ignition Output Signal
17 Vehicle Speed Sensor
18 Ignition Timing Adjustment


1991-1995 Legend (G2)

Code # Explanation
1 Left Oxygen Sensor
2 Right Oxygen Sensor
3 Manifold Absolute Pressure Sensor
5 Manifold Absolute Pressure Sensor
4 Crank Angle Sensor
6 Coolant Temperature Sensor
7 Throttle Angle Sensor
9 Number 1 Cylinder Position (No. 1 Sensor)
10 Intake Temperature Sensor
12 E.G.R. Sensor
13 Atmospheric Pressure Sensor
14 Electronic Idle Control Module
15 Ignition Output Signal
16 Fuel Injector
17 Vehicle Speed Sensor
18 Ignition Timing Adjustment
23 Left Knock Sensor
41 Left Oxygen Sensor Heater
42 Right Oxygen Sensor Heater
43 Left Fuel Supply System
44 Right Fuel Supply System
45 Left Fuel Metering
46 Right Fuel Metering
53 Right Knock Sensor
54 Crank Angle 2 Sensor
59 Number 1 Cylinder Position (No. 2 Sensor)

(Thanks to Leon Millete for this thread here)
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