i have a b16A in my honda civic dx 1991, it hasn't ran right since i bought it. buddy that i bought it off of said it needed a new computer because it wasn't running properly, it wasn't accelerating right bogged down a lot. and when ever i put it in gear 1 or any gear if that and push the gas and let off the clutch it seems to die [stall out] i switched the computer from the pm6 to the pr3 and still nothing, the little red light on the ecu blinks i believe 3 times, it's two slower red blinks then a quick blink. and it constantly does it repeating it in that order over and over. anyone have any idea to what is the matter and or how to fix this?

 

Alright, I'll throw ya a quick bone but it won't solve your problem.

A long blink counts as 10. A short blink counts as 1. So two long and a short is 21. Makes sense right? Just for future reference, I want you to be able to pull more numbers since you will probably get different check engine lights as you try and get this running. CEL code 21 is the VTEC spool solenoid. Which means you are revving the motor up high enough to engage VTEC and it's spitting out that code.

If your car is dying it could be many many problems. It is probably a bad wiring job or vacuum line routing. Try and get some photos. Lots of them. A general shot and then a picture of just about every sensor you can find and someone will be able to spot a flaw and that will get you going.

 

so basically you want me to take multipul pictures of my engine and the bay and the wireing harnesses?
Well i did it, and here's the link for the pictures.

http://s880.photobucket.com/user/jbo...civic%20engine

 

Okay, get a second opinion on this before you take it as the gospel. But I don't think I see anything converting your car to MPFI.

Correct me if I'm wrong, but this is your car and engine here:
At least that was it stock. I am just assuming the engine swap was done poorly and wrong. If the ECU wasn't swapped out I am guessing that the wiring at the ECU wasn't done either. And your injector wiring may be wrong.

 

well yeah the stock thats the stock DX, i have the B16A in it as we speak, i can take more pictures of the engine to show more so you can have a better look, or others? and the guy i bought it off of said he had it running last year in the summer and put it in his garage after the summer for winter, and when he brougt it back out it wasn't running properally because of the ECU. but i'm getting the code error 21 On my ECU and that is it..? so what should i do about that? replace the solenoid? or rewire it i dunno? lol PVC the cords inside the clip?

 

Well. I'm not sure how much I would trust this 'guy' you bought the car from. If it worked before and he pulled it out and it just magically had the wrong ECU in it... I'm just not buying that. It sounds like he started a project and didn't finish it and then handed it off to someone else. But I could be wrong.

As for code error 21,
It is more than likely a wiring issue. There is a chance that it is the VTEC solenoid. So you can replace the solenoid and see if that fixes it. Alternatively you can trace wires and check for voltage both at the ECU and on the solenoid. VTEC is engaged by a single wire. It should be ran to A8 if memory serves me right. So check your ECU and make sure it is plugged in.

On the ECU, looking at it from the side the connectors go in:

A ------- B ------- C

And it is counted:
1 3 5 7 ...ect
2 4 6 8 ...ect

So it should be the first clip on the left, bottom row of wires, 4th one in. If there is no wire there then that's the problem. I don't remember if there is a wire there from the factory. But the previous owner would have had to splice his wire into there.

 

alright i'll check quickly and take some extra pics just give me a few minutes. and i'm honestly thinking he took out his old ECU and sold it separately in my honest opinion, because i had to replace a few things now. so i think he took a couple of things out and sold them or something. but i put everything that i needed to have it running again back in. so i don't really know what else to say.. maybe plug an OBD detector in and see what the problem is? but im not to sure if this model comes with one..

 

Alright i checked the wiring, and it does have the A8 wire connected in it.
And here is more pictures.
http://s880.photobucket.com/user/jbo...ideshow/Engine

 

and how do i check the voltage on the ecu and solenoid? use a tester light on the wire? or what? Lol sorry i just don't wanna screw something up.

 

I haven't found anything that stands out. I see the extra plug in the engine bay for the extra wires and I can see where he added the resister box and such. It looks like most of the vacuum hoses are routed correctly too.

It doesn't haha. That blinking light is how you detect codes. It's an OBD0 car and the detectors now are mostly OBDII from what I know. There are readers that can pull OBD1 codes too, of course.

Is your car OBD0? Or is it OBD1, or do you know? I'm not sure how a car with different electronics would run. I will assume it is still OBD0 though.

Have you tried to do a tune up? New spark plugs, wires, distributor cap, oil change, ect? That and possible some new filters and checking the connections on all your important sensor plugs (MAP, IACV, Distributor, ect) may get you some where. You should also check into you FICV since I have heard that causes a lot of problems. Do you have a tach? Can you read the idle RPMs?

Probably need a multi-meter to check the voltage. I'm not sure exactly, off the top of my head, what sensors need constant power or the voltage at every point. You may want to buy a manual for your engine or find one online to view. That and good 'how to fix -----' and try and find something out that way.

Honestly, when I have an issue I try to google it and find someone with similar symptoms. Then you can work from there. It's hard to say exactly what is causing your bogging. I know a bad MAP sensor can cause bogging. But there are a million different things that can cause bogging too. So I still can't say, without a shadow of doubt, what is causing your issue.

Try bouncing some ideas off of me. What are you thoughts on what could be wrong? Brainstorming can help figure stuff like this out.

 

One last idea though, try and do a compression test on each cylinder and post your numbers if possible.

I'm not sure if a faulty clutch could cause your problem either. Discribe the idle. Or maybe get a video of your car idling. Sound is really helpful for these types of things.

 

its an Obd0, and at first i thought it was cause i had the pm6 ecu so i bought a pr3 and put it in, and still the same thing, now its saying something is wrong with my solenoid. but i don't think that would cause the bogging or the idle problems. in my honest opinion i don't think there is anything wrong with the motor it's self or the spark plugs or the fuel pump. so maybe the distributor? i don't know. because it starts up fine, sounds alright untill i put it in gear and push the on the gas, then it starts to die down and such.. like i can record a video upload it and show you what i mean if that helps at all?

 

that's not a B16a

 

dude thats the DOHC B16A... how is that not the B16?

 

1) It's a DOHC D16 from like an 88-89 Integra

2) Has no vtec solenoid

3) Stamp on the block will clearly say D16 or ZC or something

4) This is a B16a

 

Its a dohc b16

 

 

cant see your picture, and it doesnt ZC or D16 on the block anywhere..

 

wait i see it now, it looks exactly like my engine just newer.. and minus the covers.. Lol

 

Yeah, record that for me. And rev it a little. Then do the bog thing.

BUT FIRST. What does the block say RIGHT HERE in this picture:

http://postimg.org/image/qh8fukq09/

 

Google search images for D16a1 and then B16a

 

DOHC ZC


Biggest give-away is the valve cover.
Second is the lack of a vtec solenoid.

 

i think i just realized the problem.. LOL i'm missing the solenoid completely.. look closely..
http://s880.photobucket.com/user/jbo...eshow/Solenoid

 

 

The real problem is that you do not have a B16

What is stamped on the flat pad circled in this pic? Or does that pad look like it's been sanded down so you can't read it?