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now I get codes 0171 and 0174
- Thread starter johnd
- Start date
Most probably massive vacuum leak.
Look for a broken hose, improperly installed air filter housing or accordian tube.
Edit. From TSB.
The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The code is set when the adaptive fuel tables reach a rich calibrated limit.
Fuel System:
· Contaminated fuel injectors
· Low fuel pressure or running out of fuel (fuel pump, filter, fuel supply line restrictions)
· Vapor recovery system (VMV)
Induction System:
· MAF contamination
· Air leaks between the MAF and throttle body
· Vacuum leaks
· PCV system concern
· Improperly seated engine oil dipstick
EGR System:
· Leaking gasket
· Stuck EGR valve
· Leaking diaphragm or EVR
Base Engine:
· Exhaust leaks before or near the HO2S
· Secondary air concern
Powertrain Control System:
· PCM concern
Look for a broken hose, improperly installed air filter housing or accordian tube.
Edit. From TSB.
The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The code is set when the adaptive fuel tables reach a rich calibrated limit.
Fuel System:
· Contaminated fuel injectors
· Low fuel pressure or running out of fuel (fuel pump, filter, fuel supply line restrictions)
· Vapor recovery system (VMV)
Induction System:
· MAF contamination
· Air leaks between the MAF and throttle body
· Vacuum leaks
· PCV system concern
· Improperly seated engine oil dipstick
EGR System:
· Leaking gasket
· Stuck EGR valve
· Leaking diaphragm or EVR
Base Engine:
· Exhaust leaks before or near the HO2S
· Secondary air concern
Powertrain Control System:
· PCM concern
Thanks for the tips.I looked at it but could not find any vacuum leaks.
I can hear a sound (like a vacuum leak) from the passenger side ,inside the engine compartment but I cannot locate it.
I found a crack on one of the lines that comes from the accordion and got really excited.I taped it but no change.
John
98 V6 2.5l 141 000km
I can hear a sound (like a vacuum leak) from the passenger side ,inside the engine compartment but I cannot locate it.
I found a crack on one of the lines that comes from the accordion and got really excited.I taped it but no change.
John
98 V6 2.5l 141 000km
Could be Y-pipe or one of the exhaust manifolds. Look under the car.
"Should I use some throttle cleaner to detect the vacuum leak ?"
Not sure what throttle cleaner you are talking about. If it says carb cleaner on the can, you are good to go.
"Also is sensor safe brake cleaner OK to clean the MAF"
Read this.
http://www.contour.org/ceg-vb/showthread.php?t=563
Not sure what throttle cleaner you are talking about. If it says carb cleaner on the can, you are good to go.
"Also is sensor safe brake cleaner OK to clean the MAF"
Read this.
http://www.contour.org/ceg-vb/showthread.php?t=563
TourDeForce
Hard-core CEG'er
Snug up the intake manifold bolts just a bit & consider getting new intake manifold gaskets - if needed. Happens every year with a bunch of cars when the weather gets colder. There are no less than 3 posts about this issue RIGHT NOW. There will not doubt be more as the weeks drag on.
Nick Buol
New CEG'er
Yeah, I am one of the "other 3 posts" about this. I can hear a "leaking" or "hissing" sound from the passenger side of the engine (under the hood) too. Just can't locate it.
If you figure anything out, please post it, and I will do the same. I may try to just tighten down the manifold a little to see if that helps. If so, it will be new gaskets for me...
Oh, I used carb cleaner like crazy yesterday trying to find it with no luck, but the manifold gaskets aren't the easiest to spray completely around as the manifold itself is a bit in the way.
If you figure anything out, please post it, and I will do the same. I may try to just tighten down the manifold a little to see if that helps. If so, it will be new gaskets for me...
Oh, I used carb cleaner like crazy yesterday trying to find it with no luck, but the manifold gaskets aren't the easiest to spray completely around as the manifold itself is a bit in the way.
JoeM
Veteran CEG'er
Yah i was gonna say manifold Gaskets.
They are fairly easy, its just the accesories bolted to the manifolds that a PITA
They are fairly easy, its just the accesories bolted to the manifolds that a PITA
Read UIM/LIM rebuild with pics in Duratec Maintenance-FAQ-Read First.
http://www.contour.org/ceg-vb/showthread.php?t=41
Read the posted link. Then determine if it is something you are comfortable with. If it appears too hard for you, send to an indy or dealer. They will probably charge 2 to 3 hours labor. It is hard for us to say how hard or easy it is. Ray or Todras have done it enough times to be able to complete it in 1/2 hour. Does that mean you can do it in that time too? Maybe, maybe not.
CSVT985
CEG'er
I had the same exact 2 codes 1 month ago when I was desperately trying to get the car inspected.
Finally gave up and took it to a shop. The Vacuum tubes on top of the engine (the two long skinny black ones) were apparently leaking where they connect to the metal UIM. They sealed it and the car passed emissions because my CEL turned off.
I would check those.
Finally gave up and took it to a shop. The Vacuum tubes on top of the engine (the two long skinny black ones) were apparently leaking where they connect to the metal UIM. They sealed it and the car passed emissions because my CEL turned off.
I would check those.