just got the engine running and 3 codes came up 6,10,13. i did a search and this is what i found 10 air intake sensor, 13 bar/map sensor, 6 coolant sensor? is this right? let me know thanks

 

wut ecu are u using?

 

sorry, iam using the 90 b18b ecu

 

Chances are the ground wire for the 3 sensors are cut somewhere. Check to make sure that there's ground for them. Reason I say that is.. the 3 sensors run on the same ground, it's not likely that all 3 sensors would fail at the same time. That's why the code for all 3..

So check your wiring.

 

It's possible that the MAP and IAC are wired backwards... the plugs are the same. Come think of it, I think all three of those plugs are the same on the engine...

Triple check and make sure the wire's colors are correct to the correct sensors... a Helms should have that info.

 

If I am not mistaking the BAR sensor is located outside the ECU on the 90-91 teg LS's The 88-91 civic Si's have them internaly. The BAR sensor is different from the MAP sensor and should set it's own code. Also You are using a B18A computer because a B18B is 94+ LS's.

 

you maybe right ks-r, ill check over the grounds. as for the ecu, iam using the 90 ls ecu. the motor and ecu are from the same car. i use the civic si harness to wire everything up.

the car is idling funny too, iam afraid the valves maybe bent. the engine came off a car that was rolled and the drivers axle was messed up. is there anyway to check if the valves are bent without pulling the head??

 

With regards to the bar and map sensor throwing a code... It shouldn't cause I've used a PR4 (TEG ecu) in my H/B and it was fine..

With regards to idling funny.. Fix those codes first before you do anything else.. Cause those codes will definitely make the idle rough.

 

i check the ground and theyre good, i reset th ecu by put the ecu fuse in the engine compartment and the codes still come up.