b20b help

dwalker · Post by **dwalker** » Mon Jan 07, 2008 1:54 am

put a b20b in my 00 civic si with a b16 tranny and it has a obd2b to obd1 harness with a p75 ecu and it runs fine but the idle is high like at 2000 dont know help me

Gunmetal Si · Post by **Gunmetal Si** » Mon Jan 07, 2008 2:03 am

lol thats funny. adjust ur throttle cable.

.:si:. · Post by **.:si:.** » Mon Jan 07, 2008 2:32 am

dwalker;89084 wrote:put a b20b in my 00 civic si with a b16 tranny and it has a obd2b to obd1 harness with a p75 ecu and it runs fine but the idle is high like at 2000 dont know help me

b16 head.

civicex442 · Post by **civicex442** » Mon Jan 07, 2008 2:32 am

check for vaccum leak on the intake mani. any open ports you didnt hook up

Gunmetal Si · Post by **Gunmetal Si** » Mon Jan 07, 2008 2:43 am

.:si:.;89095 wrote:b16 head.

so is this what hes done?

dwalker · Post by **dwalker** » Tue Jan 08, 2008 1:58 am

no i havent and the throttle cable is adjusted thanks does the ecu need to be tuned would that effect it because the ecu is for a 1.8 and the b20 is 2.0

dwalker · Post by **dwalker** » Fri Jan 11, 2008 3:35 am

some help :yo:

Gunmetal Si · Post by **Gunmetal Si** » Fri Jan 11, 2008 3:41 am

have u checked the tps voltage? u sure about the cable? ohter thatn the cable man there really isnt anything that would make it do that, that is if the idle is steady at 2k. give me a little more info as to what all u have messed with and itstalled.

LowePerf · Post by **LowePerf** » Fri Jan 11, 2008 4:23 am

dwalker;89258 wrote:no i havent and the throttle cable is adjusted thanks does the ecu need to be tuned would that effect it because the ecu is for a 1.8 and the b20 is 2.0

As stated above. If the throttle cable is adjusted and there are no vacuum leaks, you should check the IAC to make sure it's plugged in. If it is chipped and you have a tune file, I would be happy to look over the file if you send it to me. info@loweperformance. net.
-John

RyanA · Post by **RyanA** » Fri Jan 11, 2008 1:57 pm

I'd say that most of the problem is that you are trying to run a B18 file on a B20. It's probably running lean which would cause the car to idle higher. Remember, the car idled high with your old ECU until the engine light came on. When the light came on, your idle stabilized. do the trick of plugging the holes like I showed you the other day and see if the car idles down. Bottom hole means issue with the FITV and the top hole means issue with the IACV if the idle drops to where it needs to be.

Ryan