93 accord h22 swap problems
 

I know the wiring has to be redone when you do this.. when I picked it up they had forgotten the o2 sensor and it was running like crap, so I wired it (had to be extended as the performance exhaust has the hole on the downpipe) and took it back.

They cleaned off the spark plugs and told me the wiring needed to be the right gauge. I drove it like that to the wire store and wired it again.

All the while and still running like crap, not getting the right fuel/air, smells terrible, shakes at idle, no power at all. Do I need to clean the plugs again? Any ideas on how I can trace the issue? Thanks.

What ECU/TCU (not sure if you have an AT or MT) are you using? Is the H22 a vtec engine?

Is the check engine light turning on while driving?

It is an automatic as it was before the swap, yes it is an h22a vtec. The check engine light is on and the D flashes. I believe the ecu from the new motor was used, I am going to go see if I can get a reading on which one it is.

I couldn't quite get the ECU out but it looks like the original one... going to have to see whats up with that when they open tomorrow.

Something is up with the engine computer (check engine light on) and the transmission computer (D light flashing).

The H22 ECU and TCU should be used in this swap. They should check for error codes to see what the computers are detecting.

Yeah it looks to me like the original control units are still in, under the passenger kick plate right? Are the right ones going to fit or is it going to be a mess? I'll be going to the shop to see whats up tomorrow, thanks for your help.

I never read anything about the ECU not fitting before. The H22 swap has been done a lot. Search the web to find out what needs to be done.

If you copy and paste the link below, you can get a H22 swap guide. Those files are at the bottom of the web page.

spoonertuner.com/manuals

h22 ecu
 

I got the ecu that came with this motor and yes it fits, it says F90 on it. I didn't get one for the trans so I left that ecu the same. Now the car is actually worse, still engine light, I idled around the parking lot, pressing the gas gave it less throttle. Not sure whats going on.

maybe this explains
 

plus I don't know what's up with either of these loose ends, maybe this explains

In the second picture, there is a vacuum hose #16 that is not plugged in and the map sensor is not plugged in.

The first picture looks like something with the vtec is not connected.

What you should do is check for error codes. The procedure should be the same as for your 93 accord, so read the DIY writeup called how to get cel codes.

First picture is the VTEC solenoid, unplugged. I can't see the VTEC oil-pressure switch, view is blocked.

h22 swap problems progress
 

ok so I now have the correct ecu and tcu. no more flashing D light but.. pressing the brake does not allow shift from park, I override with the key.. the least of my concerns right now

i wired the vtec solenoid to pin A4 which got rid of that error

not sure where to wire the map sensor to, read online to wire it to the drivers side plug in the little vacuum box on the firewall, can someone confirm that, maybe I'm just getting the order of the three wires wrong

the only error I'm getting now is tps (throttle position switch)

It drives but it doesn't let me accelerate.
Learning a lot, thanks for the replies, currently stuck on these sensors.

On my 95 accord, the plug for the TPS and the map sensor were identical, so you could switch them.

What are the wire colors going to each plug?

That's the prob, there's only a plug on the tps which is:

yellow w/white stripe
red w/black stripe
grn w/white stripe

But yes I see it fits both. Not sure where to wire the map to, i'd go right to the pins on the ecu if i knew which.

This information is from a 93 UK manual. I found that manual on a bit-torrent site. The wire colors are the same that you listed on the throttle position sensor.

The Red/blk wire is in the middle. That should give you a 50:50 chance at getting the TPS wiring correct.

I am sure that the pinouts are available for your the ECU you are using.

Ok I found the same info, wired the map sensor and left the tps plugged in. Still getting the following errors: TPS, MAP and knock sensor. Knock sensor causing this? Is it just one wire on the back of the head? I only see something with two wires on this h22a.

The only suggestion that I can give to you is to download a prelude shop manual. The online manuals thread in the DIY section has a link to a spooner site with many honda manuals. Try to figure out where on your 93 wiring harness the map and tps pins end up. Also see where they should be on the prelude.

You never said what ecu you were using? What year of prelude did you get the engine?

Using 92-96 prelude motor & ecu with original accord harness. Not sure which ecu that is but it says F90 on the outside. I checked and the map sensor wires line up, I'll check the tps but it seems right, and I'll check the manuals, thanks.

"92 to 96" covers a lot of territory, especially OBD-1 vs. OBD-2 which have different complements of sensors & different wiring harness.