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bugek9

bugek9

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Joined
Apr 18, 2010
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hi again lads another problem:angry2:
story is i put a b18c4(obd2a) into my eg4 civic and i've used a del sol (obd1) loom for engine and obd1 dash harness from eg i've repinned for my (obd2a dizzy and alternator and injectors) engine is turning over and it started yesterday and ran but when i moved the throttle it would cut the car out i have one plug left over and it doesnt fit on any sensors and am missing the plug and wires for my map sensor ? there just not there :angry2:anyone no what this plug is for
02032011013.jpg
maybe is it plug on del sol engine thats not on mine and not used if so were is my map sensor plug i no its plugged in there in pic but that was TPS sensor plug its in its right spot now am missing map sensor plug the wires arent there either. any ideas on this any help welcome :thanks: sorry for the long rant but ive been working on this car awhile now and really want to get it going :dance:
 
That green plug that's right beside the dizzy is the vtec solenoid plug... Other then that you should Check if the engine light is on here's how you check the cel without a obd2 scan tool..

►►THE Check Engine Light (CEL) THREAD: HOW TO & CODES◄◄ - Honda-Tech


Also check to see If you plugged the map sensor with the correct plug.. Since there both the same plugs map/tps you can easily screw up.. If you have them hooked up wrong car will run but stall when you accelerate...
 
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Some dizzy's have one plug others have two
my b18c6 has one plug, but my mates b18c4 has two
don't konw if that will help

duffy
 
Streethondas said:
That green plug that's right beside the dizzy is the vtec solenoid plug... Other then that you should Check if the engine light is on here's how you check the cel without a obd2 scan tool..

►►THE Check Engine Light (CEL) THREAD: HOW TO & CODES◄◄ - Honda-Tech


Also check to see If you plugged the map sensor with the correct plug.. Since there both the same plugs map/tps you can easily screw up.. If you have them hooked up wrong car will run but stall when you accelerate...
Click to expand...

no its not vtec solenoid plug its in. this one has two wires blue/black and black. cant check engine code as thers no CEL coming up on cluster even when i trying checking for one. cheers for reply.any other suggestions ? also tried swapping the plugs TPS and MAP car wouldn't even start then
 
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well it could be your iacv valve? for the iacv valve for obd2a you have to repin it from the ecu...so your using a obd2a ecu w/obd1 engine lo see if your clusters engine light bulb isnt burnt out...also check to see if you have a vacuum leak? if it starts up.. put your hand in front of the throttle body and see if the car shuts off.
 
ok so i swapped the engine loom back to the obd2a one and it starts alright now but it still idles rough and cuts out when i try to rev it.It does cut out when i put my hand in front of T/B and couldnt see any leaks i sprayed carb cleaner to check for them. any other ideas what to look for or try out ??
 
bugek9 said:
ok so i swapped the engine loom back to the obd2a one and it starts alright now but it still idles rough and cuts out when i try to rev it.It does cut out when i put my hand in front of T/B and couldnt see any leaks i sprayed carb cleaner to check for them. any other ideas what to look for or try out ??
Click to expand...

This part sounds like the IACV needing some cleaning out.
 
Did that car have map sensor mounted to firewall on old engine? If so there is seperate short loom for map sensor just run a vac pipe off manifold to the map sensor on firewall and it should run fine or re-route wiring and connect to map sensor located on TB.
 
The plug that's left is for the vtec solenoid oil pressure sensor. Most of the OBD1 engines have this. On B18c4 engine the vtec solenoid does not have oil pressure. The problem that you have sounds like you connect the wrong plug to the TPS or MAP sensor. Check your wiring
 
alright guys got it sorted out :nice: i put a new rotor and dizzy cap on and away she went.cheers for all the replys :thanks:
 
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