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2004 Durango will not run below 2500 rpm.
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Anonymous Poster
uncleogre2003@yahoo.com
Dec 29, 2008, 6:39 PM
Post #1 of 7
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2004 Durango will not run below 2500 rpm.
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I have a 2004 dodge durango that will not idle. It starts barely if you hold the gas pedal down,but you have to hold it down and work the peddle to keep the rpm's above 2500. Dealer says that there is a problem with the valve train.Maybe a broken spring or retainer. Performed a compression test and all cylinders above 125 psi.Suspect the electronic throttle.Hope someone has ran into this.
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Loren Champlain Sr
Veteran
/ Moderator
Dec 29, 2008, 6:45 PM
Post #2 of 7
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Re: 2004 Durango will not run below 2500 rpm.
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Doesn't sound like a valve problem to me. Having to keep the throttle opened sounds like an over-fueling issue.
Look and listen for a major vacuum leak. Did this start, all of a sudden?
Loren
SW Washington
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Guest
Anonymous Poster
uncleogre2003@yahoo.com
Dec 29, 2008, 6:55 PM
Post #3 of 7
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Re: 2004 Durango will not run below 2500 rpm.
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Checked for vacuum leak with smoke machine. Found upper intake leaking at #7 runner. Performed fuel system test-58psi at idle. Supposed to be 60. Replaced the seals on intake and re-tested with smoke.No leaks.Checked all 16 plugs when we did the compression test and the plugs were fouled. We replaced all .Computer scanned with Modus-random cylinder missfire. Engine is a 5.7 ltr. hemi.
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Loren Champlain Sr
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/ Moderator
Dec 29, 2008, 7:05 PM
Post #4 of 7
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Re: 2004 Durango will not run below 2500 rpm.
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Well, it's obviously over-fueling, then. Check MAP, CTS, and O2 readings w/Modus.
Loren
SW Washington
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Guest
Anonymous Poster
uncleogre2003@yahoo.com
Dec 29, 2008, 7:23 PM
Post #5 of 7
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Re: 2004 Durango will not run below 2500 rpm.
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Factory spec for fuel press is 60 psi at idle plus or minus 2 psi. Fuel press is in spec. Adaptives are at limit, showing lean.
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Loren Champlain Sr
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Dec 29, 2008, 7:42 PM
Post #6 of 7
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Re: 2004 Durango will not run below 2500 rpm.
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Injector pulse high? What are you seeing CTS vs. ambient temp? Any codes coming back? Are you seeing O2 crosscounts normal?
Loren
SW Washington
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UncleOgre
New User
Dec 29, 2008, 8:06 PM
Post #7 of 7
(2362 views)
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Re: 2004 Durango will not run below 2500 rpm.
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I worked on this vehicle before Christmas. I will check pulse width and coolant temp sensor. O2 sensors were all working,but i don't remember on the cross counts. I did check exhaust backpressure and it is not restricted.
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