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Old 11-20-2012, 11:40 PM   #1 (permalink)
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Exclamation Sable Idles Fine But Chokes In Drive

I am having a hell of a time sorting out the whats wrong with the hesitation and chocking when I am in drive idle and take off.. I just had an awesome leak with the power steering pump and it sprayed about the engine compartment some , mostly on the left side belt area.. as All this occurred my 2001 sable with a DOHC 3.0 Duratec engine started a nasty choke in drive while idling with hesitation during in drive acceleration.. I am a suspension guy so working with the engine is newer to me.. but if there are obvious items that need replaced I can knock it out... After looking around I am noticing that what i am describing is looking towards the EGR Family.. The valve itself has a vac hose connected to the top but there is no vacuum in idle... Is that normal or do I need to open conduit and start replacing tubes? I need some ideas
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Old 11-20-2012, 11:54 PM   #2 (permalink)
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Sounds like it could be a misfire. Is your check engine light on?

First thing to rule out is a dirty air filter. I've seen people with the same complaint have a super clogged up air filter.

There should be no vacuum at idle. The EGR valve stays closed at both idle and WOT. You can test if it is working correctly by popping the cap off of the EVR (EGR Vacuum Solenoid mounted on the passenger side of the upper intake, has a round cap) and place your finger on the nipple inside it with the motor idling. If it stalls or almost stalls, the valve is working correctly.
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Old 11-20-2012, 11:58 PM   #3 (permalink)
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NICE... I will do that in the morning... First thing.. Air Filter is good .. First thing checked... and I need to double check the part your speaking of... not you said it has a cap on it that you can lightly pry off and does this part have a sponge filter? if so I will know right where to go and I did renew that sponge filter in case power steering fluid mist clogged it up ...
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Old 11-21-2012, 12:01 AM   #4 (permalink)
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It does have the sponge filter around the outside of the nipple.

Again is the check engine light on?

If it is misfiring, this thread is a good place to start: How to Understand and Diagnose Misfires
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Old 11-21-2012, 12:04 AM   #5 (permalink)
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forgot to answer about the check engine light... no light is on but if it is just burnt out or something ...
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Old 11-21-2012, 12:07 AM   #6 (permalink)
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It's weird.. it has a super smooth idle with no load but when thrown into drive it has the described prob.. to describe better .. there will be smooth power then speratic hesitation mixed with normal operation... with no pattern ..
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Old 11-21-2012, 12:10 AM   #7 (permalink)
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when I say pattern I mean it has its own in and out hesitation and choke.. makes it hard to figure.. it has good fuel smells a little rich at times i.e. when it is choking
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Old 11-21-2012, 12:16 AM   #8 (permalink)
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Quote:
Originally Posted by Breeves002 View Post
It does have the sponge filter around the outside of the nipple.

Again is the check engine light on?

If it is misfiring, this thread is a good place to start: How to Understand and Diagnose Misfires

Very Good Find ... Thank You
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Old 11-21-2012, 12:16 AM   #9 (permalink)
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How many miles? Are the plugs original?

Haha, I wrote that misfire guide with some help
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Old 11-21-2012, 12:19 AM   #10 (permalink)
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Wires look good ... Good Thread :-) ... Not original plugs or wires..
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