eg vtec rough idle, excessive fuel consumption, and hesitation while cruising.
11-21-2011, 03:47 PM
#31
Racetracks
Join Date: Nov 2002
Location: How long is a piece of string?
Posts: 15,668
Likes: 0
Received 0 Likes
on
0 Posts
Re: eg vtec rough idle, excessive fuel consumption, and hesitation while cruising.
Check the pinout from the ECU to the O2 sensor connector. Also check that the O2 sensor is getting power.
11-21-2011, 07:57 PM
#32
Temporary ######
Join Date: Feb 2009
Location: Madrid
Posts: 2,920
Likes: 0
Received 0 Likes
on
0 Posts
Re: eg vtec rough idle, excessive fuel consumption, and hesitation while cruising.
Okay so now the code 43 is gone. Now its throwing a code 41 which is primary oxygen sensor heater. All wiring is good. No shorts or anything. Im starting to think maybe the ecu is going? I read some forums with the same problems. Also my friend said that the 2 grey wire pins on the o2 sensor may need to be swapped. Idk how much of that is true but what y'all think?
11-22-2011, 07:32 AM
#33
Registered member
Thread Starter
Join Date: May 2009
Location: va beach
Posts: 123
Likes: 0
Received 0 Likes
on
0 Posts
A voltmeter. The o2 sensor was stuck on lean. Checked all the wires for the o2 readings and all came out fine. I returned the first o2 sensor I bought and got another and still got the oxygen sensor heater trouble code. So I went on Honda-tech and a few different people had the same exact problems and their ecumenical was bad.
11-24-2011, 08:50 PM
#34
Registered Member
Join Date: May 2008
Location: lynchburg
Posts: 412
Likes: 0
Received 0 Likes
on
0 Posts
Re: eg vtec rough idle, excessive fuel consumption, and hesitation while cruising.
i think u may have a bad fuel pressure regulator, also check the vacuum line to the regulator.. or possibly you have a leaking injector that doesnt shut and stays partially open
12-02-2011, 04:27 AM
#35
Registered member
Thread Starter
Join Date: May 2009
Location: va beach
Posts: 123
Likes: 0
Received 0 Likes
on
0 Posts
Okay, so new motor is in. Its not fully broken in yet but still throwing the code 41. Primary oxygen sensor heater. Granite I spent about 70 bucks on the part, I got the 3rd one in it now. tried another p28 chipped ecu and code still came up. Im thinking about putting an o2 simulator in it.
12-02-2011, 04:38 AM
#37
Racetracks
Join Date: Nov 2002
Location: How long is a piece of string?
Posts: 15,668
Likes: 0
Received 0 Likes
on
0 Posts
Re: eg vtec rough idle, excessive fuel consumption, and hesitation while cruising.
Okay, so new motor is in. Its not fully broken in yet but still throwing the code 41. Primary oxygen sensor heater. Granite I spent about 70 bucks on the part, I got the 3rd one in it now. tried another p28 chipped ecu and code still came up. Im thinking about putting an o2 simulator in it.
You need to geta factory service manual and look at the wiring for that circuit. You've replaced the ECU and tried another O2 sensor but that doesn't affect the wiring or the power source for the O2 sensor heater. Some cars use ignition power on one side of the O2 heater circuit and the other side goes to the ECU, but I can't remember if that's what Honda does or not. Anyway, you've just been replacing parts but haven't really been properly troubleshooting anything it doesn't sound like.
