Throwing 10 CELs and major loss of power.

[WhiteOnRice]

Last weekend I swapped an a2 into my EP. The only problem I had was an IACV CEL. About 3 days after the swap was complete the idle "cured" itself. The CEL remained on so I reset the ECU. The idle was good, no CELs so I drove it to work (friday).

Immediately after starting the car to drive home I get another CEL. I get off work at 12:30am so I couldn't do anything about it. I filled my tank at Shell and went home. Today I went to Autozone to get "the" CEL checked and it's throwing 10 codes: 2 for each cylinder misfiring and 2 "random cylinder misfires." The autozone guy said the usual: "when did you replace the plugs last?" But I know it's something more large scale than that.

The car has a major loss of power (feels like the k20a3) but idles good and the "misfires" aren't audible.

2002 Si, k20a2 with rsx-s ecu and engine harness. Acura checked my wiring job when they reprogrammed the immobilizer and said it's connected correctly.

Any ideas guys?

[talonXracer]

You have a loose ground somewheres on the engine.

[WhiteOnRice]

I'll run out and check.

[WhiteOnRice]

Okay you were right about the ground. The serpentine belt side ground was disconnected! But this just makes me more confused because I was making a lot more power a couple days ago and it wasn't grounded then either. I don't think grounding that wire did anything.

Now that it's brought up, how many total grounds should be in the bay? I have the tranny one, ecu and now the engine. I used to have a grounding kit but I left it off after the swap. Which do I need?

The ground that wasn't connected:
http://i73.photobucket.com/albums/i224/fizix_skate/IMG_0163.jpg

Tranny ground:
http://i73.photobucket.com/albums/i224/fizix_skate/IMG_0166.jpg

ECU ground:
http://i73.photobucket.com/albums/i224/fizix_skate/IMG_0165.jpg

Are grounds off the IM bolts required?
http://i73.photobucket.com/albums/i224/fizix_skate/IMG_0164.jpg

[WhiteOnRice]

Any more ideas? Does it sound like bad gas?

[v1c10us]

do you have the one on the Valve cover?
theres also one straight down beneath the battery.

[WhiteOnRice]

The one I called a tranny ground comes off the battery. I'm going to be re-installing the ground kit tonight but I doubt that's my problem. :mfrown:

[WhiteOnRice]

Anyone. ANY suggestions. I called into work to get this done tonight.

[fatdong]

What were your 10 cels exactly

[SyckSiR]

check that your coils are tightened down proper, also check that ur spark plugs are tightened right, (1/4 turn past hand tight), u can check ur plugs see if they are messed also u may wanna check out your timing chain, see if its a tooth off or so...

[WhiteOnRice]

What were your 10 cels exactly

Cylinder 1 misfire
Cylinder 2 misfire
Cylinder 3 misfire
Cylinder 4 misfire
Random cylinder misfire
Cylinder 1 misfire
Cylinder 2 misfire
Cylinder 3 misfire
Cylinder 4 misfire
Random cylinder misfire

The gas station manager said it could be a clogged cat so I put my DCRH on and we'll see if that helps. It still seems like it's missing a ton of low end power.

[talonXracer]

I wouldnt follow a gas station attendants advice, unless he also works on Honda's.

[WhiteOnRice]

I only took it as a suggestion. It didn't harm anything putting the DCRH on.

Looks like I'm going to the stealership... :mfrown: