2000 Dodge Durango 4.7 4x4
Replaced TPS.
Replaced AIS.
Replaced fuel injectors. Cleaned the Throttle body. Replaced sparkplugs.
Symtoms are : high idle speed when placed in park. Needle bounces between 900 and 1600 rpms.
2007-02-14 12:30:10 · 6 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Dodge
Sounds like you have a vacuum leak somewhere. Do you have an intake vacuum leak? Or maybe you could try pinching off all of the vacuum hoses,including the hose going to the brake booster,one at a time to see if that makes any difference in the way it runs.
Just some things that came to mind!
Good luck!
And also make sure that all of your vacuum hoses are routed correctly. This is very important these days!
2007-02-14 12:40:25 · answer #1 · answered by Mr. Badwrench 6 · 1⤊ 0⤋
I have an 03 dakota 4.7 and no matter how cold your idle should be no more than like 900 RPM. do you have a check engine light? try replacing the IAC Idle air controler located right below the TPS. this is what adjusts the idle as the butterfly is completly closed. the lil opening below the butterfly intake is where the iac gets it air and it has a plunger that opens enough to keep a constant idle that the computer tells it to.
so replace the IAC and I bet that will cure this idle problem.
what everyone else have told you is totally wrong.
got www.dakota-durango.com and ask the peopel there. they will also tell you to replace the IAC. good luck.
2007-02-15 15:53:37 · answer #2 · answered by Jecht 4 · 0⤊ 0⤋
Does the engine change speed, or does the needle just bounce the way you stated. You have done a lot of changing, cleaning, and replacing. Has all of this been for the so called idle problem? Was this from a mechanics advice or did you do it on your own.
2007-02-14 20:38:44 · answer #3 · answered by ttpawpaw 7 · 0⤊ 0⤋
There is something really wrong here. You should be idling at a consistent rate of 11 to 1200, even on cold days. But you have done everything anyone could -- back in my time this would just mean taking a screwdriver to the carburator, but you have done far more than that. This is really a problem for those two guys from Boston on the radio.
2007-02-14 20:51:55 · answer #4 · answered by obelix 6 · 0⤊ 1⤋
Its a vacuum leak, had the same problem in my 2001 durango. Fixs it fast and stops what seems to sound like an engine tap.
2007-02-16 12:12:54 · answer #5 · answered by David 2 · 0⤊ 0⤋
try looking into ur MAP sensor.
2007-02-14 20:37:25 · answer #6 · answered by cannondale96 3 · 1⤊ 0⤋