Taurus Car Club of America : Ford Taurus Forum banner

1 - 20 of 61 Posts

·
Premium Member
Joined
·
20 Posts
Discussion Starter #1
So about nine days ago I purchased a 2004 Taurus SE. It has close to 119,000 mi.
When it came to maintenance, it looks like it was rarely done on this car.

I have a few issues with the car

1.When sitting for 5+ hours or overnight, the car becomes noticeably harder to start. When it finally starts, the rpm will hover around 600-800 for a few seconds (misfiring, shaking) and then shoot up to around 2000 rpm, after 10-15 seconds or so it'll lower to around 1500 rpm, few seconds later it drops to around 1000 rpm.

2. Sometimes when slowing down and stopping at a stoplight and or stop sign, the rpms start to fluctuate between 600-800 and the car starts surging (I think that's what its called). I would best describe it as if you have one foot on the brake pedal and another foot on the gas pedal pressing and releasing over and over.

3. On two different occasions (directly after the above happens) when accelerating from a stop light the car hesitates and acts like its ignoring the gas pedal (only way I can describe it). About two seconds later the power kicks in and all is well again.

Two days ago the CEL came on gave me the codes P0171 and P0174 (something about both banks being lean). So I erased the codes and one day later I got the code P2196 (one of the o2 sensors being rich).


The only things I have done so far is flush the transmission with M1 ATF and change the engine air filter.

What would you recommend that I do next?
Thanks in Advance
 

·
Premium Member
Joined
·
15,578 Posts
I would change both upstream O2 sensors, for starters.

Second, I'd change the plugs, wires, fuel filter, and air filter. I'd also have the alternator and battery tested.

After that, see what happens, and we can continue on from there.

JR
 

·
Premium Member
Joined
·
20 Posts
Discussion Starter #5
I would change both upstream O2 sensors, for starters.

Second, I'd change the plugs, wires, fuel filter, and air filter. I'd also have the alternator and battery tested.

After that, see what happens, and we can continue on from there.

JR
[/b]
Will try to do that this weekend.

Clean the Idle Air Control orifices, and motor, clean the inside of the throttle body with some carb cleaner and a rag. Definitely do the rest of what JR has suggested.
[/b]
Where is the IAC located at?

Wow, a 2004 model with almost 120K miles on it? Holy crap. Someone drove a lot!
[/b]
I know. Is that like a record for a 04? :lol:
 

·
Registered
Joined
·
166 Posts
I work at the dealer.
We had an 04 with a 155k on it monday!
 

·
Registered
Joined
·
1,111 Posts
I just did tires and brakes on an 04 with 135k

edit: i asked him to swap tails with me and I give him $20, he said no :(
 

·
Registered
Joined
·
953 Posts
Clean the Idle Air Control orifices, and motor, clean the inside of the throttle body with some carb cleaner and a rag. Definitely do the rest of what JR has suggested.
[/b]
Where is the IAC located at?




here is a link to a thread that contains what you may be looking for regarding the Throttle Body and IAC and MAF (Mass Air Flow)

TB, IAC, MAF Thread
 

·
Premium Member
Joined
·
1,557 Posts
I just did tires and brakes on an 04 with 135k

edit: i asked him to swap tails with me and I give him $20, he said no :(
[/b]
Why don't you just buy new ones? They're about $26 each from RockAuto.com and then once you put your old ones on Ebay, it'd probably cost you less than $20.
 

·
Premium Member
Joined
·
20 Posts
Discussion Starter #11
I still haven't done anything yet (plan to buy the parts tomorrow) but I just wanted to update that my cel came on again.

It showed:
P2196<---"O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1"
P2198<---"O2 Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1"
P0174<---"System Too Lean Bank 2"
P0300<---"Random/Multiple Cylinder Misfire Detected"
P0420<---"Catalyst System Efficiency Below Threshold Bank 1"


Hopefully doing what godspunk32 and rudedog mentioned will fix the problem(s) that this car has. :noes:
 

·
Premium Member
Joined
·
186 Posts
P0420<---"Catalyst System Efficiency Below Threshold Bank 1"
[/b]

That's not good. Get those upstream O2 sensors changed and see if this goes bye bye. Probably won't but it may.
 

·
Premium Member
Joined
·
20 Posts
Discussion Starter #13
So I replaced the following yesterday:
-Spark Plugs
-Plug Wires
-Fuel Filter
-Cleaned the IAC
-Cleaned the MAF sensor

Now it starts a bit easier, but unfortunately the cel came on again. I'll need to stop by autozone to have the cel read. :(
 

·
Registered
Joined
·
422 Posts
Sure sound like a vacuum leak somewhere. I would check around the intake. A lean state is not good. That will burn stuff up real quick depending on how bad the leak. Take some carb cleaner and spray around the intake while in park and engine running and if there is ANY noticable change in rpms or the engine starts to go faster/slower or dies then your gasket has pooped and will need to be replaced. This also applies to vac lines with same princpal. I bet your plugs were a little white right? Misfire across all cylinders sounds bad sorry. I hope it's not a head gasket. But I would check for vac leaks asap and if it where me I would stop driving it till I found the problem. Lean state depending on how bad could do serious damage. Does it run warm at all or maybe run hotter then normal just not over heating? What's the new codes?
 

·
Registered
Joined
·
1,342 Posts
I think my dad's 04 SES has one of the lowest....19k
 

·
Premium Member
Joined
·
20 Posts
Discussion Starter #17
Sorry for the late update. I've been busy with school and other crap.
It was a major vacuum leak. It was a gasket that had hardened on some kind of valve behind the intake plenum (passenger side).
The area where I'm talking about:

After removing the part, I googled the part number (not in traditional ford format) and came mostly empty handed. Some swedish website showed a pic of the part and said something about a Jaguar S-Type.
I even took the part to an autozone and nobody knew what it was. Being a Saturday night and dealers were going to be closed until Monday, I went and removed an oil filter gasket from a filter and used that as a gasket. That fixed the problem right up.
Unfortunately since I kept driving like this and the problem got worse, I think I messed up the cats. I get P0420 and P0430 on a regular basis. The code comes back after a few miles of clearing the code.
 

·
Registered
Joined
·
671 Posts
QUOTE (Squirt @ Feb 28 2009, 08:34 PM) index.php?act=findpost&pid=703964
Sorry for the late update. I've been busy with school and other crap.
It was a major vacuum leak. It was a gasket that had hardened on some kind of valve behind the intake plenum (passenger side).
The area where I'm talking about:

After removing the part, I googled the part number (not in traditional ford format) and came mostly empty handed. Some swedish website showed a pic of the part and said something about a Jaguar S-Type.
I even took the part to an autozone and nobody knew what it was. Being a Saturday night and dealers were going to be closed until Monday, I went and removed an oil filter gasket from a filter and used that as a gasket. That fixed the problem right up.
Unfortunately since I kept driving like this and the problem got worse, I think I messed up the cats. I get P0420 and P0430 on a regular basis. The code comes back after a few miles of clearing the code.[/b]
Squirt... Nice job find what your issue is. I have still not resolved my issue with the misfire codes, etc.... MY car has been exhibiting the surging symptoms you describe. BullGeek and I may tear into my car this weekend and replace a bunch of maintenance items I bought, trying to track my problem down and also PM.

Do you have any additional photos of the seal and or location you are talking about?

Thanks in Advance!
Chris
 

·
Premium Member
Joined
·
20 Posts
Discussion Starter #19
QUOTE (michakaveli @ Feb 28 2009, 06:32 PM) index.php?act=findpost&pid=703983
Squirt... Nice job find what your issue is. I have still not resolved my issue with the misfire codes, etc.... MY car has been exhibiting the surging symptoms you describe. BullGeek and I may tear into my car this weekend and replace a bunch of maintenance items I bought, trying to track my problem down and also PM.

Do you have any additional photos of the seal and or location you are talking about?

Thanks in Advance!
Chris[/b]
Unfortunately I deleted the pics of the part taken out of the car but I did take some pics of the area.



You need to remove the cowl so you have access to its two hex screws.
 

·
Registered
Joined
·
671 Posts
Thanks Squirt, I actually just took a photo of that same location to post but you beat me to it.

Was the rubber gasket that seals that assembly to the plenum dry rotted, i.e. crack, shrunken, brittle? I plan on taking my plenum off tomorrow so I will definitely take a look at this. I'm thinking this may be the cause of my problems all along, but my camshaft synchronizer is starting to chirp occasionally, so I figure I might as well take care of it.

Any difference in performance and/or CEL's? I get some sort of CEL just about every time I start the car.
 
1 - 20 of 61 Posts
Top