Help.Playing mechanic and then will probably have to hire one.

anggi · 04-07-2012, 06:56 PM

My 1997 Explorer was running great and one morning got up to go to work and it was running awful.Very rough idle and it missed.So I thought it was the fuel-i added injection cleaner and fuel additive. Didnt help. I changed plugs and wires(The best ones i could get)Still continued plus what seemed to me to backfire a little. The longer it ran the worse it got.Bought an OBD scanner-cam shaft sensor problems. So i changed that.Thank God for the DIY videos on computer.(only took me three days.Hahaha)Didnt help.Now scanner says Cyl.4 misfire;P0133 O2circuit slow responseBank1Sensor1;P0153 same thing onlyBank2Sensor1. Now What do I do?

Kyllster · 04-10-2012, 11:06 PM

I'm not all too certain about your codes, but since no one else has replied, I'll share my story.

After having my '98 XLT for about 2 years, it started this habit of idling REALLY low, around 250rpm at startup, and would stall if I didn't rev it a few times. Asking around some mechanics I knew I was told cylinder misfiring and such, but one told me it could be the throttle body was dirty. Now 3 other mechanics I knew told me this should never happen, but since the work was free, I let the guy (a certified master mechanic) check it out.

He took it apart, cleaned the throttle body real well, and reassembled. Sure enough, after this it fired up like a champ. This may not be your problem, but I was told it could never get dirty, and it did. Good luck.

04-07-2012, 06:56 PM	#1
anggi Wannabe Elite Explorer 1997 ford explorer Join Date: Apr 2012 Posts: 1 Vehicle Specs (Original Poster)	Help.Playing mechanic and then will probably have to hire one. My 1997 Explorer was running great and one morning got up to go to work and it was running awful.Very rough idle and it missed.So I thought it was the fuel-i added injection cleaner and fuel additive. Didnt help. I changed plugs and wires(The best ones i could get)Still continued plus what seemed to me to backfire a little. The longer it ran the worse it got.Bought an OBD scanner-cam shaft sensor problems. So i changed that.Thank God for the DIY videos on computer.(only took me three days.Hahaha)Didnt help.Now scanner says Cyl.4 misfire;P0133 O2circuit slow responseBank1Sensor1;P0153 same thing onlyBank2Sensor1. Now What do I do?

04-10-2012, 11:06 PM	#2
Kyllster Wannabe Elite Explorer Mahanoy City, PA 1998 Explorer XLT 5.0 AWD Join Date: Apr 2012 Posts: 6 Vehicle Specs	I'm not all too certain about your codes, but since no one else has replied, I'll share my story. After having my '98 XLT for about 2 years, it started this habit of idling REALLY low, around 250rpm at startup, and would stall if I didn't rev it a few times. Asking around some mechanics I knew I was told cylinder misfiring and such, but one told me it could be the throttle body was dirty. Now 3 other mechanics I knew told me this should never happen, but since the work was free, I let the guy (a certified master mechanic) check it out. He took it apart, cleaned the throttle body real well, and reassembled. Sure enough, after this it fired up like a champ. This may not be your problem, but I was told it could never get dirty, and it did. Good luck.