I reset the computer by disconnecting the battery, and the CEL went off but came back on after about twenty miles or so.

 

I took it back to auto zone and the code came up P-443 Purge canister problems. I checked the wiring connector and it looked ok. Is there anything else I can check myself.

 

I am from Holland but living in the Dominican Republic I bought a Ford Taurus sel 2009 fine car but the last two months he is bucking at a speed off around 45 miles, here are no technicians who are able to solve it or give me an answer I am not a technician but I like to change first the spark plugs for sure they are,t changed the last 45000 miles (cas milage 125000) can somebody explain me ( sounds stupid I know) how to find the spark plugs thx

 

If you can provide the 8th digit of the vehicle identification number (VIN) or if you know what size engine is in the vehicle maybe we can help.

 

Thx for your reply my engine is the 3.5 6 cil : 1FAHP24W79G125533. I don,t know howmany HP the engine has, thank you in advance

 

Thx for your reply my engine is the 3.5 6 cil : 1FAHP24W79G125533. I don,t know howmany HP the engine has, thank you in advance
Also I want to mention I purchased a new battery and several times while driving the red light turns on and after a short time turns off again maybe is a part off the problem??

 

If you can, use Google and type in;

Ford 3.5L DOHC Spark Plug Replacement-YouTube

The movie shows and explains the procedure to replace the spark plugs. After looking it over it will help you decide if you want to do it yourself or have a shop with the right tools do it. Spark plugs do not always come with the correct gap and should be checked before installation.

Which red light , battery, brakes?
A failing alternator can give some of those symptoms.

 

Another item that will cause bucking is the TPS. If driven with the TPS in a consistent spot, it can develop a "DEAD" spot (0 ohms). This spot will tell the computer to shut the injectors "OFF". It is a momentary signal that causes the "BUCK" as the TPS position crosses the "DEAD" spot. It's most noticeable when trying to maintain a certain speed as the TPS constantly crosses the area back and forth.

 

thx for your explanation but I am not a tech so I don,t understand the meaning of TPS

 

Thx I did find in Google the meaning of the Tps the subscription in Google gives me the feeling that this wil be my problem I will go and visit the Ford dealer in the capital here I will post the results