93 Accord LX misfire
#21
I found and cleaned four of the five grounds under the hood. The fifth one, G351, I think I got, I'm not sure if what I cleaned was actually it. I didn't clean either of the grounds under the dash, they both looked fine. I didn't get to any others. If anything, the car ran worse. I got a check engine light, but when I went to check it, still got no flashing light.
So, is a ECU my next step? I can get a used one on Wednesday for $100 and install it Wednesday afternoon or get a remanufactured one from RockAuto for $211 plus $86 core charge. But, I won't be able to get it and install it until next Monday at least. Is a remanufactured one worth the extra money and wait?
So, is a ECU my next step? I can get a used one on Wednesday for $100 and install it Wednesday afternoon or get a remanufactured one from RockAuto for $211 plus $86 core charge. But, I won't be able to get it and install it until next Monday at least. Is a remanufactured one worth the extra money and wait?
Last edited by sirtwist2; 03-06-2016 at 07:37 PM.
#23
I was mistaken, however, there were four wires, not three. Two black wires, a white wire, and a green wire.
#24
OK, I thought some of those were shielded. Like a miniature coaxial cable with center wire, insulation, braided ground shield, and finally the outer insulation.
White & green are the signal wires. The 2 black wires are for the preheater.
White & green are the signal wires. The 2 black wires are for the preheater.
#26
My mistake, I wasn't at all clear in my message about cleaning the grounds under the hood. I found and cleaned G101, I was looking in the front of the engine instead of behind the distributor.
#27
Changed the ECU with a used one, didn't change a thing. It's still backfiring thru the airbox, surges at idle and at anything below around 3500 rpm, and runs like crap. I got a check engine light but still can't get any codes out of it. I'm at the end of my rope! I have no idea what else to do? Maybe the fuel pump? But why can't I get any codes out of it if it's the fuel pump?
#28
On the 90-93 accords, the ECU had a window with a LED that would flash codes. The metal plate the ECU is bolted on should have a cutout to see the window. Short the connector and see if the LED will flash codes for you.
#29
I do not see any windows on the ECU. The shield has five holes, two aren't over the ECU, two have metal under them, and one has a sticker on the ECU under the hole. But, the area under the sticker is one of the holes for the electrical connections, doesn't appear there could be an LED there.