im just going to start from the beginning

so we have this CRX that we put a b18a1 into out of a 92 integra, the car was obd0 to start, they bought some cheap ebay conversion harness with extra wires comming out, i used the pinout to trace and label them.

the first time it started it ran like crap, bogged and sputtered threw out code 15 and 41, found out 02 was single wire and needed to be 4 wire, wired that in, started it again, still ran choppy, checked vacuum diagram, was all messed up, fixed that as best i could (it appears to only have one solinoid on the fire wall not two, so its not exact to the diagram, but it started and ran smooth and throttle was better, that cleared out the code 15 and 41 but now there is a code 14,
and the symptoms are as follows, Idles high
i dont know how high bc the tach only moves after i hit the gas, and then it jumps, then bounces and then drops to like 1200, its not showing motor rpm for sure
coolent fan wont come on
any help would be awesome because im lost and we need to get the car done and back.

i also was wondering about the knock sensor, i have a wire for it, but idk if the motor has it, hasnt thrown any codes for it.



another thing i thought was weird was the guys used the b18 injectors and just cut/spliced the clips, but didnt remove the resistor box? i thought it had to be removed, but it isnt throwing codes so idk.

 

CEL
14
IAC Valve (Idle Air Control)
bad wiring or unplugged / bad sensor

That's where I would start. That will fix your idle most likely.

As for the tach. Try an aftermarket one ran to the distributor pin just to be sure.

Coolant fan could be a couple things. Take the fan switch (on thermostat housing) and hot wire it. Basically run a wire from one side of the plug to the other. See if it kicks on. If it does, you may need a new thermostat. If not, there is a short in the wire.

Is there a knock sensor on the back of the block? What ECU are you using? The factory ECU? If you have a wire on your conversion harness but no knock sensor on the engine, don't worry about it. It's an extra sensor.

The injectors are probably still peak hold injectors. If it works, don't change it.

 

were using the factory pr4 that came from the integra, my boss says it ran great in the integra witch is why it was swaped, coolent fan does work we took it out and fed it 12v and it fired up, and we tested its switch is putting 14v to the fan when ignition it on?

how do i check the Iavc, ive never had to deal with one before, Honestly im kinda stepping into new territory with this honda swap, ive read a lot on hondas and knowa lot of theory crap but have never done it before.

thanks for all the help!

 

You must have a clogged thermostat then. If the fan kicks on with power, it means the thermostat isn't working right. The thermostat is basically just a heat sensitive switch.

The IACV is on the back on the intake manifold and usually requires cleaning.
https://honda-tech.com/forums/acura-integra-6/%2A%2A%2Ahow-clean%2A%2A%2A-your-iacv-k-idle-air-control-valve-1575913/

You should have a good running motor after that is fixed. I think you have a wiring issue or a bad Idle Air Control Valve though. You are throwing a code for it. Make sure it is plugged in and the wires haven't come loose.

 

pullled off and put back on IAVC was pluged in and switch was reciving power and ground, yea fan is reciving 12v when car is running and 12v turns on the fan but when i plug it in nothing. will check thermostat when it cools, its hard though my boss keeps saying it ran great and shouldent have these issues, im going to keep plugging away at it.

 

this time i pulled the iavc and followed the write up to clean it, thanks, im going to try cleaning the FITV too and see if that helps

 

Is the car still throwing a code 14? Maybe it got knocked during the removal/install and broke? If that is even possible. Could be a wiring issue.

 

1 step forward, 3 steps back, Right?

Re-installed iavc, now it wont start
Started and died, then started and died now wont start, Bonus, no codes, so i have no idea what to check.

 

It may be flooded.

You won't get a code for the IACV until the car is running most likely. The only codes you will get during cranking and probably crank oriented codes.

 

we put gas in and it ran, spit out code 14 again and a new one, code 7, cleaning iavc didnt work, Theres this thing on the opposite side of the TB from the TPS that pulls on the throttle, it is what makes the car idle high, when we unplug it idle drops below where it is supposed to be, and sometimes will die t, i printed off a vacuum diagram for the b18 and it said to plug it into the intake tube but it has a short ram so no vacuum so i ran it of the manifold but theres a solenoid missing on the crx up where the maf is, so the vacuum lines are not the same

Edit: Code 7 came from my boss unplugging the tps while it was running, so were good on that.

 

You either have bad wiring or a bad sensor. The Code 14 should go away.

Can you take a photo of this thing in question? What vacuum diagram are you using? A lot of those vacuum hoses can be capped off and deleted. The B18 didn't have a MAF and neither does the CRX. They have a MAP, but that's different-ish.

 

we had quite working on the car for the day because other cars came in, i can get a pic tomorrow, as for what diagram i just googled B18a1 vacuum diagram and printed one that looked right, and my bad i meant MAP not MAF, got mixed up lol,

 

Hey! I wanted to be sure. You could have a MAF somehow, I'm no expert. Are you using the stock one on the firewall? The other solenoid is emissions stuff anyways. You can bypass it.

Pictures will definitely help. Also, try to find a service manual online and read through some of the trouble shooting for the IACV. You could have a simple voltage error and it's not getting power- or something like that.

 

ill try and get some today, i wont be able to post till tonight, yea its the factory one on the fire wall, ill look into the iavc more, thanks.

 

im going to try to hardwire the iavc straight to the ECU and see what happens.

Got here, tested some ****, when i put the test meter on one of the pin for the iavc i get 12v at it, and on the other one i get nothing, im guessing it needs to be grounded and that the ground is mia? when i test pin A9 (iavc) all i get is a flashing (-) with beep beep beep beep, when i find ground it shouts solid and solid green, when i find 12v it shouts solid and solid red, but this beeping and flashing green is new to me, boss said its pulsing ground witch is why, but im not sure????