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At a complete loss with different codes. Need HELP :)
So these are my current issues. I love my discovery, but these codes are driving me insane. I've been working on these awhile. Here's what I've done:
New Bosch O2 sensors
New MAF
New Bosch Platinum Plugs
Bought new oil separator but haven't installed it yet.
When I bought it the CAT's had already been cut out. I put a plug fouler on bank 2 sensor 2 but maybe I need something taller, that takes the O2 out of the stream more. Any help appreciated.
I do still have the old one. I will swap them tomorrow .Thanks for the help.
It's been a but cold but I did get the old MAF put back in but haven't drove it enough yet to see what all codes I'm going to get. Will update once I drive a bit more, should be tomorrow hopefully.
I do still have the old one. I will swap them tomorrow .Thanks for the help.
Originally Posted by Extinct
Record your 02 sensor voltages, bank 1 and 2, sensor 1. Post up here or on youtube video preferably. Fully warmed up, idling.
After putting in the old MAF to see if that the problem, I drove it around for a bit and let it get nice and warm. Then parked it and these are the readings I got.
Also, I noticed that my fuel trims were weird. Like I said, I don't have cats's so my rear fuel trims was 0%. But my front bank 2 stayed at 25% and my bank 1 was bouncing between 25% and -100.8% .
We need to see a graph of your oxygen sensor voltages, you need to use the graph function instead of the display function. Record a video and put it on youtube with a link to the video. Your oxygen sensor voltages should be cycling between 1 volt and zero volts - the display that you posted shows only .1 volts. If it only ever reads that you likely have bad oxygen sensors - they read close to zero when they go bad. the sensor shoudl read 1 volt on cold startup, then start cycling after a few minutes. zero volts or .1 volts indicates a full lean condition, that would cause your fuel trims to go full rich.
We need to see a graph of your oxygen sensor voltages, you need to use the graph function instead of the display function. Record a video and put it on youtube with a link to the video. Your oxygen sensor voltages should be cycling between 1 volt and zero volts - the display that you posted shows only .1 volts. If it only ever reads that you likely have bad oxygen sensors - they read close to zero when they go bad. the sensor shoudl read 1 volt on cold startup, then start cycling after a few minutes. zero volts or .1 volts indicates a full lean condition, that would cause your fuel trims to go full rich.
Ok, I will get a video, but if I remember, they didn't move much at all, they stayed pretty much the same.
As far as codes coming back, I only drove it a couple of miles as I live out in the middle of nowhere. I just drove up to the hunting cabin and back, so maybe 2 or 3 miles total.
Not sure if this changes anything but the part that's circled, (this is a Google pic as it's dark here, but mine is not connected to anything. I believe it's supposed to go to the SAI canister?? I found the hard plastic line that comes from the canister and I believe is supposed to hook up to this valve, but it wasn't connected to anything .when I hooked it up to this valve, the engine ran like ****! The idle speed was low .
As it sits right now, I'm getting about 8mpg (yay me). Before I changed the plugs I was getting about 13.
Last edited by rcdoeshair; Nov 21, 2018 at 09:59 AM.
my guess is the low fuel economy is because both oxygen sensors are dead and thereby reading full lean, causing that ECU to go full Rich to try and compensate.
At a complete loss with different codes. Need HELP :)
