A weak sensor will mimic a lean condition. But just because the code is gone does not mean the lean condition has been resolved. If you check the LTFT with a scantool, you can verify the problem has been resolved.

 

In my case I verified it with emissions tests before and after. Blew lean before the O2 sensor was replaced, blew clean after the sensor was replaced. The next e-test was 2 years later (same O2 sensor) & it blew even cleaner. In my case it was definitely the O2 sensor.

 

Hi all

Have replaced the O2 Sensor yesterday with an motorcraft item. MIL Lamp doesn't come on anymore, i should reset the DTC next. I have used a long ring wrench to losen the old one which was not to hard to do but the connector-wire i had to cut, to get the wrench over. Put some WD40 to the nut when the pipe is warm, let it collect to the thread for few minutes, then losen.
The original old O2 Sensor is stuffed up with black powder. Maybe to clean the nose from soot and free the openings had worked as well instead of buying a new one.

Cheers

joe

 

Bosch O2 sensors work well on these Aero V6 engines and should be much lower in cost than MC in EU

never had any luck cleaning an O2 sensor. the active element is enclosed inside and shielded from almost any cleaning we can do. the contaminants are usually metal vapors from gasoline contaminants, motor oil additives and air contaminants. the metal vapors fuse to the active sensor components and form an atomic level compound bond.

engine must have been running really rough and missing to leave heavy black carbon deposits on the O2 sensor? never seen one plugged like that.

MAF cleaning does work, use a liquid fuel injector or carb cleaner and soak the active element

congratulations and cheers on getting that old girl running so well again

 

Lean indicated o2 condition causes increased Injector on time which actually causes engine to run rich = sooty o2 sensor & possibly plugs too. Hopefully Cat convertor is not affected. Gas consumption should also get better now & engine should run smoother.
Classic stuck lean condition, can check with DVM, look for .1-.2 volts constant , indicates non switching LEAN condition sent to computer. O2 sensor is proved to be defective.

 

Some weeks ago, after i bought this Aero, i found no MIL in the lampsocket, which leads to my conclusion, that the engine was running with DTC P1131 for a long time.
The old set of Spark Plugs i replaced already are sooty too.

Regarding the Cat, i noticed a boiling water noise from there when engine is hot. As i described in another post, huge amounts of water are shooting out from the Endpipe during a cold start - there must collect water in amounts that exeeds the idea of common condensates in exhaust systems. Also, there is a leakhole in the muffler that makes the idling engine sounds like a lokomotive. As usual, i try renew the whole system on rescued oldies like this one.

Yes, fuel consumption has decreased a lot with this new o2 Sensor and a sixpack of Double-Platinum. I get hundred freeway-miles more for the counter with one full tank emptied (540miles/65mph average).

Speeds above 20mph are smoother, kick-down reacts much earlier. But idle is still rough. sometimes after a long run, engine prone to die but recovers itself by computercontrol. I have not arrived yet to have it fixed. Inspecting EGR, PCV, MAF, IAS must stay behind on the priority list. A new Fuel Filter arrived and may solve the problem as well.

Coolant flush was big fun! Thanks 96_4wdr for Your short and easy to understand post how to do it (search=coolant flush). Forgot to order a Thermostat Gasket .. no signs of a leak so far, must have luck with this one.

Have a good weekend

joe

 

the CAT may burn off all the carbon buildup in time. that's what's producing all the water you see pouring out the exhaust.

the rough idle is probably a combination of dirty MAF and dirty IAC/IAS
lots of good write ups on cleaning both in the forum. I like to soak the valve end of the IAC and the active element end of the MAF in FI/carb cleaner for a couple hours and let air dry. the MAF element is delicate. the IAC diaprham is sometimes torn or the rubber sleeve is too worn and unit has to be replaced.

do you enjoy driving your new Aero, waterbear?

 

oohh yes, i do!

remembers me more'n more to my 76' Mustang II regarding the engines vitality and to Torino's handling. 72' Torino 4door was equiped with coil springs in the rear - a novum for passenger cars at that time.

Still have the noise under the hood. Alternator Bearings and Brushholder assembly are on the way. Alternatorparts.com ships to all over the planet.

Greets

 

Ouh, sold in EU Motorcraft items are really made by other companies, O2 sensors - by Bosch, plugs - NGK ore Autolite, starters - by bosch, alternators and radiators - by Valeo. Motorcraft is just a tradmark.

Btw, there are the same O2 sensors on EU cars, but with different connector.

 

Thanks Pablo-UA for this update in who is who in the market. Have ordered so far all the tune-up parts directly from the U.S. As long, as it is not made in China it will work for me.

Have a good time

 

will you do headlamp update? I've started taurus headlamp conversion with parts of BMW X3 headlamps.....

 

Yes, a conversion is in the pipeline, have everything required. I want also realise the relay controlled wiring, to have the maximum effect with the Hellas H4.

But before that, there are many other procedures to accomplish. I have even not checked the transaxle. How knows, maybe it's dry like the desert.

X3 headlamps? God idea! Todays Lightning Systems are much more efficient than it was just a couple of years ago. We here must share the road with bmw, audi, mercedes and in most of the case they'r all new. Sometimes i think todays Headlamps are to bright and blinds.

I'll keep everybody postet with the Headlamp conversion

time to go..

 

It is my Taurus headlamp project. Just beginning.

Crystal lens are to be made later.

Well, other project

Volvo VN with Ford Transit headlamps


Aerostar with custom bumper and 90 mm hella HID low beam hedlamps hidden in bumper





High beam glare.... Yeah! shields are down!

fortunatly new HID projector lamps with D2S bulbs are designed to reduse glare effect with shield inside. previous generation with D2R ore HID converted reflector type lamps are glare monsters.

I wanna drive safely and fast, but I do not want blind other drivers so I use headlamp parts of newer cars.