o2 sensor

Hi my 2002 ford explorer 4.6l after built 3/02 original O2 Sensor connector melted. Finally got a new os sensor and pigtail but don't know which color goes to which. Pig tail different to truck harness Wondering if anyone can help me figure out how to wire the new Connector to the existing...

I recently picked up this 03 Explorer with the 4.6L in it, the odometer says roughly 198k. I bought it pretty cheap so I've been fixing things and sorting out the bugs. Up until now the fixing has all been mechanical, bearing assy's, upper control arms, latches, hinges, etc. Here's the deal...

I made a no-frills video showing where all 4 of the oxygen sensors are in the explorer. I had to change a sensor recently (you can probably guess which one is new from the video) and having something like this on the forums would've helped so I just wanted to share this here

Hi all, I just completed a engine replacement on my 02 Ford Explorer XLT 4.0. Runs and drives great when cold, but once it warms up a couple different codes pop up. When they appear, the engine stumbles when idling to the point that it kills itself. Occasionally, it will hesitate and stumble...

i have an exhaust leak at the manifold, im getting 10-11mpg with regular driving and im getting 3 codes for the EGR, o2 sensor and maf sensor. could my exhaust leak be causing all of this? would cutting off exhaust(after o2 sensors) at least temporarily fix my issues?

Hi guys, My check engine light is on and it says I have a problem with the O2 sensor. Does anyone know where the sensor is? Specifically the downstream one. Or any other things to look at? Thanks! P013A O2 Sensor Slow Response - Rich to Lean (Bank 1 Sensor 2)

Hello, 1st post here! I have an explorer 4.0 ohv that has 2 codes on it: P0171 and P0174. They are for "system too lean" for banks 1 and 2. When looking at the live data from my obd2 scanner, I see 0 volts and short and long term fuel trims at -100%. I have tried this obd2 scanner on other...

I needed to change all 02 sensor wires due to some cable burns. I got 4 sensors. Each sensor with4 pins, 2 for the heater and 2 for the signal. In the PCM Pinout 4.0L SOHC as the following pins: The heater is mass controlled by the PCM and connected with a fuse to (+) on the battery. 93 Heated...

So I have a 91 Explorer that just failed smog because it was running rich. about 7 years ago I had the same problem, I changed out several sensors on the truck, and the 1 that finally passed it was the O2 sensor. This time around I ran my scanner on it, KEY ON ENGINE OFF I got a code 14 the...

Hi All, I have a '15 Explorer XLT 3.5 with a persistent CEL. OBD scanner is throwing code P013C: O2 sensor slow response-rich to lean bank 2 sensor 2. Does this sound like a simple downstream O2 sensor replacement or something else? I see a lot of talk here about other oxygen sensor codes...

I drive a lot and the last month or so I have been getting a faint oil smell in the cab. I have looked over the car extensively and not found any leakage. I do not smell oil in the exhaust and the oil level is unchanged. my mechanic and I looked over it together and he removed a vacuum hose to...

Long story short, I need to replace O2 sensor from rear cylinder bank and the wire connector is located between the engine and firewall. I can barely touch the connector from underneath the car. I can touch it when reaching around the engine, but need two hands to jiggle the connector loose...

Hi, I'm new, and hope to get some advice from your experienced forum folks. My ladie's 2003 Ford Explorer Eddie Bauer 4.6L was throwing P0135, PP0053, and P0155, so I did the amateur thing and changed both upstream O2 sensors. I cleared the codes with my OBD2 scanner, and after a few cold/hot...

Hello, my name is Chris and although I have came here for help with my Explorer for years, I just joined today. Thanks for all the help I've received in the past and will receive in the future. The problem I'm having is rough idle at cold and warm startup. It clears up and runs smooth in less...

I'm sorry if this is supposed to be an obvious answer but I can't find it. On a 99 EB is bank 1 o2 sensor on the left (drivers side) or the right (passenger side). I'm getting a code indicating downstream sensor on bank 2 is bad and don't know which one it is. This is a new vehicle to me as I...

HI guys! I'm looking at a 99 EB with 168k on it. It's in pretty good shape except for a tear on drivers seat bottom(109 to replace) and the cruise doesn't work(I think I can fix). The CEL is on and code indicates downstream o2 sensor bank 2. I've got to be able to pass Ga emissions so the CEL...

2002 Ford Explorer 4.6l and my passenger side o2 connector was melted and the replacement bwd pt5525 does not have the same wire or colors. So Im looking a way to connect the factory grey/red, red/white, grey/Lt blue, and red/yellow wires to the replacement o2 pigtail plug in connector. Photos...

Dear Explorers, I have been recently facing some issues with my cars drive. On checking the codes through OBD-II reader i can see following codes coming up. P0108 - Manifold Absolute Pressure / Barometric Pressure Circuit High P2195 - O2 Sensor Signal Biased / Stuck Lean Bank 1 Sensor 1 I have...

I would appreciate any feedback on this issue. I have a 1997 4.0 OHV that is throwing P0171 and P0174 codes, and the scan tool data is unusual. Looking at OBD live data, the STFT and LTFT both show -100.0 for bank 1 and 2. Not changing with time or RPM. Also, O2 sensors are registering 0V...

Happy new year everybody! I have an issue with high fuel consumption. Currently it is winter time with temperatures about -10C to -16C/14F to 3F, and I am seeing about 28l/100km, 8 - 8.5mpg. I don't do a lot of idling for engine warming, but the trips are usually short, 7-8km, or about...

So the issue bug has finally bitten me bad. In the past it was small minor cosmetic things (passenger side seat cover clip tore from the leather seat in the leg area, Black upper window trim just BLEW OFF at highway speed, power mirror motor failure.) About 2 months back I noticed a pretty...

I have a 1998 ford explorer with the 4.0 v6. im getting a P1151 Lack of HO2S-21 Switch, Sensor Indicates Lean. i checked the live feed and even after the o2s are warmed up there is no voltage and -100% STFT for all three sensors. Checked the harness to make sure it wasnt damaged. i conducted a...

im getting the p1151 and p0136 codes for my after cat o2 sensor. but i also had my cats gutted and had a resistor added to the sensor to smooth the trim. possible chance i busted it?

So... I assumed that replacing the O2 sensors in my 93' would be a reasonably simple project. The sensors are exposed and easy to get to on the bottom of the truck, and appear to simply screw in. I haven't taken the old ones out yet, though, because when I went to disconnect the old one...

Hi guys, New member here first time question... I own an 03 explorer limited 4.6 awd.. Getting codes from a s.e.s light po059, po135 and po155.. All 3 codes came after replacing the intake manifold due to a coolant leak at the thermostat housing.. Also replaced the intake manifold gaskets...

Hi all, (Pls forgive me if this is answered in another thread. I wasn't able to locate anything with a search.) I have a 2000 XLT 4.0 SOHC, 209,000 km. I've had it for eight years and since 60,000km. It's always idled pretty rough, with a vibration that seems to come and go. Last winter in a...

hello i have changed nearly every sensor on my 91 explorer. from map sensor to just recentlly my 02 sensor. my check engine light was on,hooked up to machine.it read o2 sensor,so i changed it. the check engine light still comes on and trucks rpms drop really low almost shutting off then revs up...

Hello i have replaced nearly every sensor possible.Computer reads bad O2 sensor,i replace then check engine still comes on in car? When idleing long enough sounds likeit want to stall then revs high? Now i hear a whining sound coming from fuel pump? Any ideas? Thank you

Autozone gave me 4 trouble codes, A week ago it was 2 codes one saying the "ECM has detected a rich or lean air fuel ratio on engine bank two." The other one says. "The computer has detected a rich or lean air fuel ratio on engine bank 1." The truck only starts rough, and idles rough...

So Here's the deal. My father In-Law brought over his 91 Ford Ranger 3.0 XLT for a simple idle issue. While looking in to it, I found a host of issues that I have resolved with the help of these forums and the interwebs. However, many posts I reviewed did not often end with resolutions or feed...

1999 Explorer Sport OHV....the engine hesitates. Symptoms are: - Hesitation while accelerating, especially under load (uphill) - Hesitation is very sudden and jerky, and appears only when engine is hot and has been running for at least 30-45mins on a warm day, longer (2-3 hours) at night or...

So on my 97 Explorer i keep getting codes for banks 1 & 2 too lean. I have tried searching for vacuum leaks with a smoke machine and found nothing. I changed the fuel filter and no change. I hooked up a scan tool with live data and saw my fuel trims were all at -100 and all 3 o2 sensors...

Hello Ford Geeks, I'm new to this forum, so I'm introducing myself, as requested by the forum. I'm not a sporty, off-road motorist, nor Henry Ford throwback by any means-I prefer bicycling to driving on most commutes, and I wanted to find a Toyota Previa-AWD, before settling for the...

I just picked up my 1996 Limited Explorer 4.0 from the mechanic. They claim that getting a p0153 circuit slow response can cause a fuel trim to bank 2 to spike, and cylinder #4 & #6 misfires. Stated that the electronic control module is running the engine too rich, and this can cause one side of...

So I have a 1998 Ford Explorer, 4.0L OHV (VIN X) with 129,000 miles. CEL came on and the idle got rough. Had the codes checked and came up with P0171 and P0174, lean bank 1&2. I replaced the upper and lower intake gaskets as well as the EGR o-ring. While I was in there I cleaned the intake...

ok i have an 03 explorer limited. fuse 41 keeps blowing and the only engine code ive seen is the rear o2 sensor... i replaced both and its still blowing. what could it be? if i unplug the battery for a few minutes and put a new fuse in itll run for maybe 5-10mins before it blows again. ive...

1996 Exploder - engine runs VERY rough, won't idle for long, can't drive. This is my daughter's truck and she broke down at school. I had the truck towed home and found the fuel pump was bad. I changed the pump and checked the error codes. The only code was low coolant temp, so I didn't do...

(this is over a period of about 6-8 months) To keep a long story short, my 93exp started running like crap and went from 20+ mpg to 14. just changed the plugs and wires 2 months prior. I thought it was a plugged cat so I cut the bottoms out of them and took the stuff out, then welded the...

Hello all. I recently bought a ´91 Explorer, and I am having some problems with the engine. First off, when cold it can take a while to get it started .. it never takes less than 3 tries and sometimes well over 10 tries. The other thing is that sometimes when accelerating from a stop the...

Hi there, i have a ford explorer 1997 4x4 SOHC with 105,000 miles. recently had lots of work done, new tranny, shocks, tires, and more little stuff. Now my gas gauge is EXTREMELY INACCURATE. As i am driving it is constantly moving, overtime i brake it goes up, when i access it goes dow...