ED-EF Swaps 1991 and older Civics, CRXs

HELP~B18 Swap into 91 Crx

Old 01-15-2006, 04:44 PM
Thread Starter
Join Date: Jan 2006
Posts: 41
Default HELP~B18 Swap into 91 Crx

the engine is in but i have a problem....The car starts up and idels find then after 2 or 3 mins it starts surgeron for like pwoer...idles high then low...high then low..........back forth like it si surgeon for power.

anyone know what it is
Old 01-15-2006, 09:36 PM
HCF Member
Join Date: Mar 2005
Location: NC
Posts: 1,801
Default RE: HELP~B18 Swap into 91 Crx

idle air control or possibly the fast idle tandem valve. maybe even low coolant level or air in the cooling system. personally id check the first 2 sensors i mentioned.
Old 01-16-2006, 06:01 PM
Senior Member
Join Date: Nov 2005
Posts: 2,667
Default RE: HELP~B18 Swap into 91 Crx

my car did that when i didn't have the coolant line connected to the throttle body
Old 05-16-2006, 05:38 PM
Join Date: May 2006
Posts: 9
Default RE: HELP~B18 Swap into 91 Crx

My Ex boyfriend just did a B18A1 Dual over head Vtec swap to his 88' CRX him and his dad did it and they had a problems. They hooked up the vacum lines wrong... and it was idoling like that... So check and reconnect your vacum lines... Now it runs fine
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