Some quick specs
1997 Acura CL 2.2
180k miles on it

Getting codes p0302 p0304 p1300
Misfires when im in partial throttle...if WOT no issues..

Below is what the dealership did.
Replaced..Wires, Cap, Rotors and spark plugs
Timinng, Injectors and CKP (?) sensors OK
Compression OK
Leakdown Good
Valve Lash within spec

And I replaced the ICM


what should i be looking into next im totally stumped.

thanks guys

 

Hmmmmm weird. I would just make sure that the spark isn't creating an arc. I had this same problem on my Dad's Mitsu. Galant. All these time I thought it was a bad coil or spark plug, but it wasn't. I found a crack on the spark plug wire tube. It was caused from oil seeping into the spark plug tube hole. All the spark created was just being absorbed by the engine block instead of the spark plug.

So check for cracks, residue in the spark plug tube hole.

 

Have you checked your TPS to make sure it's not faulty? Also could try looking at the MAP sensor and see if that's working properly

 

cool..ill check that tomorrow



Ive wondered about the TPS and MAP but why am i only getting 2 of the 4 cylinders. I might end up doing them because im running out of things to fix

 

So your saying that you had them do all the work, cap, rotor, wires plugs, etc and they sent you out of the shop with an apparent misfire problem. That sir would be some horrible service. The honda service manual have the nice trouble tree to follow when diagnosing problems. There should be no reason why they cant pinpoint the problem.

The TPS could affect it. You could also have a bad ECU!
I would suggest searching for a genuine honda service manual!
Or ALL DATA.
You might want to double check and make sure the plug wires a routed correctly.

 

Yeah i was pissed too after waiting for 3 days for them to get wires shipped to them...
on top of that they said it was all good to go...picked the car up at 9pm at night and within 10 mins im getting the CEL..

I didnt wanna bring it back to get more ripped off

 

Also just to let you know, finding cracks are really hard in the spark plug boot. So, look really hard and look for abnormality.

 

Take it back and bitch. Get mad cuss throw a trashcan, do what ever to show them that you just paid to have the problem fixed.
make sure you bring you receipt. Its sounds like they didnt even diagnose anything. It sounds like they were just parts replacing. Tell them you want them to fix it or you want your money back on the labor charge!

 

sorry guys, but your advices are rediculous. we (i have identical problem) cannot invest anymore money where ever we go.. we need solution, it's a wide spread nation problem.. i'm thinking my timing wasn't done in hundreds of thousands, but before tht i will be changing the distributor and pluging my egr valve..