99 civic ex obd2b
11-05-2011, 06:30 PM
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99 civic ex obd2b
Ok
so i bought a 99 civic ex stock single cam vtec
thats a obd2b car right.. Right
car didnt have engine harness installed
So i start plugging everything and throw the plugs thru firewall
now i see that i have one too many plugs down there
turns out that the engine harness is obd2a
any ideas on what to do other than buying a obd2b vtec harness
so i bought a 99 civic ex stock single cam vtec
thats a obd2b car right.. Right
car didnt have engine harness installed
So i start plugging everything and throw the plugs thru firewall
now i see that i have one too many plugs down there
turns out that the engine harness is obd2a
any ideas on what to do other than buying a obd2b vtec harness
11-05-2011, 06:35 PM
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Re: 99 civic ex obd2b
note:
I thought about the jumper harness
but what about the green plug on the obd2a harness.
its not the same pin layout as the obd2b one
also what happens to plug A thats on the car
I thought about the jumper harness
but what about the green plug on the obd2a harness.
its not the same pin layout as the obd2b one
also what happens to plug A thats on the car
11-05-2011, 08:22 PM
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Re: 99 civic ex obd2b
so even though the green plug on the obd2a harness doesnt match the obd2b pin layout and i have that plug a obd2b on car dangling and the obd2a harness plug that plugs on driver side has 2 pins more than the obd2b harness my car will run fine with a obd2a ecu?
11-05-2011, 08:33 PM
#7
Re: 99 civic ex obd2b
Wrong!
You need to use a obd2b harness.
but, if you cannot source one. You can do some modifying to the harness. Not sure what this will include, other than swaping plugs.
Or, convert dash/harness to obd2a. This means running the 96-98 climate control, as well as the heater.
And then, swap the ecu to a 96-98, which in it self could pose a few issues.
The easiest option is to began looking for a new harness. Bring the ecu with you to insure the plugs match up.
You need to use a obd2b harness.
but, if you cannot source one. You can do some modifying to the harness. Not sure what this will include, other than swaping plugs.
Or, convert dash/harness to obd2a. This means running the 96-98 climate control, as well as the heater.
And then, swap the ecu to a 96-98, which in it self could pose a few issues.
The easiest option is to began looking for a new harness. Bring the ecu with you to insure the plugs match up.
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11-05-2011, 09:49 PM
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Re: 99 civic ex obd2b
i was gonna try and repin the plugs. got them freem at junk yard
didnt wanna spend a arm for another harness..lol
didnt wanna spend a arm for another harness..lol
11-05-2011, 09:51 PM
#11
Re: 99 civic ex obd2b
How much do they want for the harness?
Just sell your old one. It's a lot eaiser. it's beats the chances the of makeing a mistake, and screwing something up.
Just sell your old one. It's a lot eaiser. it's beats the chances the of makeing a mistake, and screwing something up.
11-05-2011, 09:57 PM
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Re: 99 civic ex obd2b
yea true that...
thats most likely what im going to do
i see the harness for 150-200
so i'll jus keep looking around
thats most likely what im going to do
i see the harness for 150-200
so i'll jus keep looking around
11-05-2011, 10:03 PM
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Re: 99 civic ex obd2b
junkyards go for 35.99 plus tax
but its rare if u find one that is not cut
thats why i jus got the plugs cuz it was cut lol
but its rare if u find one that is not cut
thats why i jus got the plugs cuz it was cut lol
11-11-2011, 12:33 PM
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Re: 99 civic ex obd2b
ok so i got a obd2b harness
missing a few plugs on it though
so i figure ill jus swap the ones i need from the other harness
but i ran into this problem
on the obd2a distributor plug as shown in this url
http://img.photobucket.com/albums/v4...stributors.jpg
#9 Blue engine speed output
is not available on my obd2b distributor plug
so i was thinking of running the wire
so where would this wire go
missing a few plugs on it though
so i figure ill jus swap the ones i need from the other harness
but i ran into this problem
on the obd2a distributor plug as shown in this url
http://img.photobucket.com/albums/v4...stributors.jpg
#9 Blue engine speed output
is not available on my obd2b distributor plug
so i was thinking of running the wire
so where would this wire go
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