Idle high on start and staying higher after throttle applied. why? 2001 Dodge Ram 1500 5.9L

120

Asked by Oct 10, 2014 at 09:57 PM about the 2001 Dodge Ram 1500 4 Dr SLT Quad Cab SB

Question type: Maintenance & Repair

I have a, like i said, a 2001 Dodge Ram 1500 5.9L. I had an IAC issue (idleing to high). So i cleaned the Throttle body and replaced the IAC valve got a bad one and replaced it again. A day or so ago it ran great then acted up again. it idles at about 1800 - 1900 rpms and if you hit the gas it will stay at high rpms and NOT drop. so for instance start at 1800 rpms and hit the gas it will jump and stay at 2500 rpms. i have rest the pcm the consumer ways. and try to get it to learn. but to no avail.

am i to impatient should i just drive it around on the highway normally for a while and let it learn over time or is the a ECU/PCM issue.

note: had plenum leak but that was fixed. there are no other vacuum leaks or other problems with the vehicle just a high start idle and higher idle stick if you will.

The thing that gets me is that the idle will stay higher after letting go of the throttle.

5 Answers

120

also the Throttle position sensor was replaced and there are no trouble codes.

6 people found this helpful.
75,455

There is a vacume leak,have you had the vacume draw tested?

2 people found this helpful.
120

we hoked up a vacuum gauge and it seems to be fine. The mechanic that is helping me is convinced that it is not a vacuum leak we check all the vacuum hoses and needed to replace the plenum gaskets because there was a leak. It will run fine and at times drive and return to idle fine however it seem to be rare and fare in between. If there were still a vacuum leak where would it be? any suggestions?

6 people found this helpful.
150

I have a 2005 dodge ram 1500 and it is idle very high. i have change the throttle body, the iac control valve, and the position sensor. it stays idled high and when im just sitting the trucks temp hand starts to rise. Can someone give me an idea of whats going on.

14 people found this helpful.

Try blocking the intake while idle with your hand and see if the rpms go down if not you definally have a leak ...it should try to die down ....planum gasket would be the answer

Your Answer:

Ram 1500

Looking for a Used Ram 1500 in your area?

CarGurus has 9,371 nationwide Ram 1500 listings starting at $1,995.

ZIP:

Dodge Ram 1500 Experts

  • #1
    Dan Connell
    Reputation
    7,060
  • #2
    pudgybear
    Reputation
    6,720
  • #3
    dandyoun
    Reputation
    6,290
View All

Related Models For Sale

Used Ford F-150
2,415 Great Deals out of 207,421 listings starting at $1,300
Used Chevrolet Silverado 1500
1,765 Great Deals out of 155,363 listings starting at $1,000
Used Dodge Ram 2500
161 Great Deals out of 4,837 listings starting at $2,200
Used GMC Sierra 1500
749 Great Deals out of 61,489 listings starting at $1,395
Used Toyota Tundra
438 Great Deals out of 39,519 listings starting at $2,900
Used Toyota Tacoma
432 Great Deals out of 48,711 listings starting at $2,994
Used Ford F-250 Super Duty
501 Great Deals out of 39,752 listings starting at $2,590
Used Dodge Dakota
84 Great Deals out of 3,087 listings starting at $1,495
Used Ford Mustang
256 Great Deals out of 38,498 listings starting at $1,350
Used Chevrolet Tahoe
571 Great Deals out of 38,557 listings starting at $1,243

Used Cars For Sale

2010 Dodge Ram 1500 For Sale
37 Great Deals out of 1,265 listings starting at $5,000
2009 Dodge Ram 1500 For Sale
41 Great Deals out of 966 listings starting at $6,495
2008 Dodge Ram 1500 For Sale
58 Great Deals out of 1,336 listings starting at $2,550
2007 Dodge Ram 1500 For Sale
56 Great Deals out of 1,286 listings starting at $3,500
2006 Dodge Ram 1500 For Sale
52 Great Deals out of 1,037 listings starting at $2,450

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.