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Old 11-26-2013, 10:24 AM   #21
my_beautious_ZX3
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Originally Posted by 03FocusZX3 View Post
The RPM will slightly go up and down.
if it keeps oscillating until you leave that RPM band, then it might be the DPFE.

Before you buy a new one, ask your dealer if they will warranty it. Not sure if it was a recall issue or grandfathered under the EPA emissions warranty, but I got my first one for free.
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Old 11-26-2013, 12:01 PM   #22
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I leaned a good lesson many years ago when it comes to engine oil "Stick with a name brand oil and you are good to go"

I buy new cars and keep them for around 10 years and I usually change the oil myself. One of my cars that was coming to the end of my ownership life. I thought I would start using store brand oils vs Name Brand to save some cash and not caring much abought the car. In a few months I noticed an oil leak at the rear main seal I thought nothing of it considering the car was 9 years old. At the next oil change I bought a name brand oil on sale (same price as house brand oil) and in a few weeks the oil leak stopped. After this experience I will only use name brand oil whether it's Dino or Synthetic oil.
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Old 11-26-2013, 08:51 PM   #23
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Did you get a CEL when the pressure switch gave up the ghost?

Toby
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Old 11-26-2013, 10:32 PM   #24
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Quote:
Originally Posted by my_beautious_ZX3 View Post
if it keeps oscillating until you leave that RPM band, then it might be the DPFE.

Before you buy a new one, ask your dealer if they will warranty it. Not sure if it was a recall issue or grandfathered under the EPA emissions warranty, but I got my first one for free.
I'm not sure how they would warranty it, but i will check on the price. Is there a way to tell if the DPFE is bad?





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Did you get a CEL when the pressure switch gave up the ghost?

Toby
I did not Highball.

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Old 11-26-2013, 11:59 PM   #25
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Quote:
Originally Posted by Edgenet View Post
I thought I would start using store brand oils vs Name Brand to save some cash and not caring much abought the car. In a few months I noticed an oil leak
I dunno. Alot of it is probably made under the same roof, maybe with different additives or maybe the same. Kinda like trying to second-guess whether a Whirlpool appliance is better than a Kenmore when they're both made by the same company.

When my Ford's hit 100K, I switch them over to synthetic (any brand, on sale) and stretch the maintenance interval out to 5K-7K just to make life a little easier. Any more effort/cash than that is kinda like taking an old wife out to a new restaurant.


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I'm not sure how they would warranty it, but i will check on the price. Is there a way to tell if the DPFE is bad?
don't think so. water accumulates in them, and then the PCB potting eventually deteriorates and the electronics fail.
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