JustAnswer > Ford
Ask A Question|Register|Login|Help
JustAnswer

Ford
Ask a Ford Question, Get an Answer ASAP!

Have your own Ford question?

23 Ford Mechanics are Online Now
characters left:
Not a Ford Question?
Bookmark and Share

Question

SES light is on. Code is oxygen sensor malfunction bank1-sensor1. Checked sensor, was ok. Replaced sensor anyways. Cleared codes. Light back on a few miles later. Checked sensor, its ok. Mechanic ran a few tests with a multimeter, found nothing. Car runs fine but has bad mpg. Changed plugs/wires. Cleared code. Drove car for an hr, code then came back on again. Perhaps a short in the wire harness or pcm??? Car is a 98 sable with dohc. 87k miles. Help!

Submitted: 660 days and 21 hours ago.
Category: Ford
Value: $15
Status: AWAITING CUSTOMER ACTION
+
Read More

Optional Information

Optional Information:
1998 Mercury Sable 3.0 DOHC

Already Tried:
Replaced 02 sensor. Checked voltage, and did other tests at connector. Its always working at time of test.

Posted by Chris (aka- Moose) 660 days and 21 hours ago.

Info Request

Give me the actual code #

660 days and 21 hours ago.

Reply

Reply to Chris (aka- Moose)'s Post: Don't have that with me at the moment. Will get it from the mechanic tommorrow. Anything else I should ask him? If it would help, I could provide the phone# to his shop and you could talk to him directly to get more info on what he tried already. He spent a good couple hrs on it already and seems very eager to get this resolved for me.

Posted by Chris (aka- Moose) 660 days and 21 hours ago.

Info Request

I am not allowed to contact by phone. Just reply tommorrow with the code and I will reply in the evening.

660 days and 21 hours ago.

Reply

Reply to Chris (aka- Moose)'s Post: Ok I'll do that. Hopefully we can get this resolved.

Posted by Chris (aka- Moose) 660 days and 21 hours ago.

Info Request

I will give it my best, hear from you tommorrow

660 days and 9 hours ago.

Reply

Reply to Chris (aka- Moose)'s Post: code is P0135. He said he ran all the tests at the connector like his online book stated. Found nothing. Also wiggled the connector while testing but still tested good.

Posted by Chris (aka- Moose) 660 days ago.

Answer

Hello I'm Chris a Ford Employee and Certified Engine/Transmission Specialist.

Thanks for asking your question. I am eager to get your vehicle back up and running correct, I am here to help you out for a small fee far less than a dealership and easier on the wallet, so if this information is of aid PLEASE PRESS ACCEPT and help me out financially by paying the small fee. Please reply if further discussion is needed.


This is a heater concern on the sensor you have been checking. Here is the ford test.

graphic
View Full Image
graphic
View Full Image
graphic
View Full Image
graphic
View Full Image
graphic
View Full Image
graphic
View Full Image
graphic
View Full Image

659 days and 23 hours ago.

Reply

I think he ran all the tests besides the ones with the breakout box because he didn't have one of them. I remember him saying something about that. He couldn't find any problems up to that point. I watched him do all the testing. Would it be possible to perform the breakout box tests without the box? I'm handy with a multimeter and could unplug the harness to the pcm and do a little testing myself. Trying to save costs on this, I've been out of work since nov so money is pretty tight. If it wasn't for the bad gas mileage then I would just leave it. I'm only getting like 15mpg mixed driving which I'm guessing is because of this 02 issue. Also, would you happen to have a pin-out of the actual 02 sensor plug? Thanks for the help so far.

Edited by XXXXXXXX on 1/31/2008 at 9:29 PM

Posted by Chris (aka- Moose) 659 days and 23 hours ago.

Answer

Yes you can bypass the breakout box and test it via multimeter with the wire diagram I sent.

659 days and 23 hours ago.

Reply

To do h36 without a breakout box. I would need to know which pins on the pcm are for those tests. Are the pins on the pcm labled? If not then do you have a drawing that shows which pins correspond to the numbers that H36 says to test? Also, is there a drawing of the 02 sensor plug that shows which 4 pins are for what? Thanks!!

Posted by Chris (aka- Moose) 659 days and 23 hours ago.

Answer

The ford wire diagrams just went down, so I will have to attach a pinout diagram later

659 days and 1 hours ago.

Reply

If the code isn't in its active state when the tests are carried out then how will I be able to find the problem? For instance the SES light doesn't come on right away right after the code is cleared nor does it come back on at the same time. Which to me sounds like an intermittent problem. I've been doing some searching online and found 2 tsb's that mention a calibration problem for 98 sables. Maybe this is a fix? Tsb # 12603 and 12515. VEHICLES MAY EXHIBIT DIAGNOSTIC TROUBLE CODES P0135 OR P0155 CAUSED BY THE POWERTRAIN CONTROL MODULE CALIBRATION (PCM). How are tsb's handled for a vehicle no longer on warranty? Would the dealer perform that fix free of charge?

Posted by Chris (aka- Moose) 658 days and 20 hours ago.

Answer

TSB's are designed only to help techs to help them make repairs quicker and simplier since ford has posted instructions which fit common concerns.

The 2 TSB's you listed are not in affect for your vehicle.

The diagrams are still down at this moment.

658 days and 12 hours ago.

Reply

Ah ok, I wasn't sure how tsb's work or what exactly they are. Yah please post the 2 diagrams when you get a chance.

Accepted Answer

Got em

graphic
View Full Image
graphic
View Full Image

Picture
Expert: Chris (aka- Moose)
Pos. Feedback: 99.7 %
Accepts: 
Answered: 2/2/2008

Ford Technician

Ford trained Tech. Trans, X-fer Case, Steering & Suspension & Brakes, Engine, Electrical

658 days ago.

Reply

Great. Now hopefully I can pinpoint the problem area. I also bought a new egr valve for the heck of it. I bumped into a few reports of people fixing a 02 sensor code by replacing the egr instead. Heh. Maybe I'll get lucky but I sure won't count on that. I thought I was getting bad gas mileage but I just filled up and calculated 18.64mpg. That was with mixed driving and with the winter gas. Not bad. I still want to try to get this fixed. It just bugs me. If I can't find the fix then would it cause any issues to just leave it alone?

Posted by Chris (aka- Moose) 658 days ago.

Answer

If you cant fix it by yourself it will not cause any damage to leave it alone.

658 days ago.

Reply

ok thanks for your help!

Posted by Chris (aka- Moose) 658 days ago.

Answer

Your welcome

657 days and 2 hours ago.

Reply

H36 and H37 reference a PCM heater ground wire. Looking at the schematic for the heater part of the sensor. The ground would be the one that goes to the pcm pin#93 right? The other wire is the positive which goes to the relay/fuse correct and would be called VPWR by a chance? Did you happen to find a picture of the 4-pin plug for the sensor so that I know which of those 4 wires are for what? Thanks

Edited by XXXXXXXX on 2/3/2008 at 9:31 PM

Posted by Chris (aka- Moose) 655 days ago.

Answer

graphic
View Full Image

654 days and 5 hours ago.

Reply

Thanks again. Haven't got a chance to work on it yet. The weather hasn't been very good.

Posted by Chris (aka- Moose) 654 days ago.

Answer

HAs not been nice here either.

+
Read More

Related Ford Questions

  • what could cause a 1994 350 motor to stop running, all of a
  • my 2000 lincoln cont has no rear air suspension checked fus...
  • I am having trouble with my lights for my horse trailer. Whe...
  • have 1996 2.3L,why 8 spark plugs. are they different. book
  • Starter is grinding. Have replaced it 4 times. After the 2nd
  • My brakes are making a scratching sound! Is it the rotars
  • what does ck susp light mean
  • MY LINCLOIN TOWN CAR RADIO WILL NOT TURN OFF THE ELECTRIC



Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Question List | Become an Expert | Terms of Service | Security & Privacy | About Us
© 2003-2009 JustAnswer Corp.