| From | Message |
Greeno
Dodge Dakota
8/25/2001
19:13:51
|
 Subject: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I know there has been a lot of posts about the idle in the new 2000-2001 4.7L Daks but i need to know if other 4.7 owners are having this specific problem. Whenever you get off the highway and are sitting at red light, the engine idle will out of the blue stumble down to 400 rpm then go right back up to normal 600rpm?? It almost feels, if you aren't looking at the tach, like someone bumps your truck from behind for a second.
Why are these 4.7L's doing this? ANybody got a good reason? Have the 4.7L's in the grand cherokee and the Durango also have this problem and if so, what is causing it?? I have had this happen since the truck was brand new and I have 20,000 miles on it now. The new "software" from the dealer has been installed in the PCM which raised the idle from 500 rpm to 600-650rpm warm idle speed and I thought it would cure this stumbling but I guess not. The TB was also cleaned. Any help would be appreciated.
|
bluangeldak
Dodge Dakota
8/25/2001
19:27:53
|  RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I had the same stumble in mine sine i owned it. I
took it in 3 times aabout the tranny, which they
did find a computer glitch, reprogrammed it but
lost some power. Then recently i got so sick and
tired of the low idle and stumble i took it back
in, they updated the PCM to teh latest version (
this was in june) and the stumble went away.
However i still get the feeling like someone hits
me from behind when at a red light. I ahve been
told that if it was an older tranny then it would
probably be a kickdown solenoid being stuck, but
with these new trannies i am not sure if that is
the same case or not??? so good luck finding out
and if you do please post it on here for the rest
of us fed up owners!!! oh also take a look at
those ball joints!! mine are failing at only
20,000 miles!!! just found one this am!!!
|
Brandon
Dodge Dakota
8/28/2001
18:44:47
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I also have a 4.7- year 2000 and mine is a 5 speed and it seems to want to run real rough when it is cold and humid. But in the warm weather it still seems to jump back and forth a little bit when i come to a stop. When i got this truck in the winter it would idle down so bad that t would die on me. Even wheni pushed the clutch in to take a turn. I took it in to the dealer 3 times. They reset the comp. Then they put a new battery in. Then they reset the comp again. I dont know what the deal is but it sucks. Anyone know anything about this please tell me. Thanks
|
Zed
Dodge Dakota
9/26/2001
00:43:41
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
My 99 3.9 auto seems to want to stall when i put it in park and it actually has stalled 2 or 3 times before, mainly when cool out. Replaced IAC motor and did not help of course.....
|
JT
Dodge Dakota
10/08/2001
12:21:06
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I have the same problem with my 2000 4.7. I took it back to the dealer about 3 months ago and they reprogrammed the computer per some service bulletin. It seemed to work for about a week or two, but it's back to stumbling at the exact speeds mentioned above, 600 rpm at a stop light after being on the highway. I've actually had it stall twice! I'm planning on another visit to the shop. I've also noticed a loss in low-end power since it's been reprogrammed. There might be a sticker under your hood too after programming that says "slash vehicle performance". What's up with that? In the meantime, I've found if you run the a/c or bi-level defrost, the engine idle is bumped up to 700 rpm and it eliminates the stumble. A band-aid for the time-being. Hope this helps.
|
Pippy
Dodge Dakota
10/09/2001
13:43:30
|  RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
Anyone know of an aftermarket computer chip available for 4.7L 2000 Dakota? I took mine to the dealer for poor idle quality, and off idle hesitation. Dealer said that Throttle body was dirty and they cleaned it under warranty, but it still runs the same. One hell of an engine otherwise.
I guess I will have to wait for the aftermarket to program this engine because Chrysler cant seem to get it right.
Let me know!!
|
Wiley
Dodge Dakota
10/10/2001
04:18:07
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I had a early 00(actually nov99) 4.7 5spd and it would stall occaisionally the first month i had.
basically same setup, come to a stop after highway speeds. I mostly got rid of it by running synthetic oil. the syn. oil make the 4.7 idle REAL SMOOTH. i used castrol syntec. while using the oil it stalled only 3 or 4 time in the year i had the truck
|
pippy
Dodge Dakota
10/10/2001
14:29:24
|  RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
UPDATE!!
Well since the dealer offered no help in fixing my erratic idle I took it upon myself to find a solution.
I should let you know that I am a second owner at 33000 miles, so I don't know if the rough, low idle has always been a problems with this truck (2000 4.7L Dakota).
Well after the throttle body was cleaned to no avail, I decided it wouldn't hurt to try some fuel system cleaner. I think the brand was B12 Chemtool? But any good strong cleaner should work. The type I used said "Do not use more than one can every 4000 miles (doesn't harm Catalytic converters or other emissions equipment".
Well I only had a half tank of gas even though it can treat up to 22 gallons (extra strength, HA, HA).
After the 1/2 tank was gone I filled the tank and since I filled the tank I haven't had any problems with erratic/ rough idle. I noticed that before when the idle was rough if I turned on the A/C the RPM's went from 500 to 700. Now the truck runs at 700 at idle without the A/C, and everything is fine.
I will perform an extended test to see if the problem returns? So far I am thrilled!!
P.S. There are some gimmic fuel injector cleaners out there. I suggest looking for something extra strong like I found or something made by a good name like BG products.
GOOD LUCK
|
pippy
Dodge Dakota
10/10/2001
14:30:25
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
UPDATE!!
Well since the dealer offered no help in fixing my erratic idle I took it upon myself to find a solution.
I should let you know that I am a second owner at 33000 miles, so I don't know if the rough, low idle has always been a problems with this truck (2000 4.7L Dakota).
Well after the throttle body was cleaned to no avail, I decided it wouldn't hurt to try some fuel system cleaner. I think the brand was B12 Chemtool? But any good strong cleaner should work. The type I used said "Do not use more than one can every 4000 miles (doesn't harm Catalytic converters or other emissions equipment".
Well I only had a had a half tank of gas even though it can treat up to 22 gallons (extra strength, HA, HA).
After the 1/2 tank was gone I filled the tank and since I filled the tank I haven't had any problems with erratic/ rough idle. I noticed that before when the idle was rough if I turned on the A/C the RPM's went from 500 to 700. Now the truck runs at 700 at idle without the A/C, and everything is fine.
I will perform an extended test to see if the problem returns? So far I am thrilled!!
P.S. There are some gimmic fuel injector cleaners out there. I suggest looking for something extra strong like I found or something made by a good name like BG products.
|
Steve
Dodge Dakota
10/15/2001
09:17:37
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
My 2k QC does the same thing, but when i put a Jet Stage II on the truck that problem went away. As soon as i removed it truck was back to it old tricks with stalling.
|
spectreman
Dodge Dakota
10/15/2001
15:44:01
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
i have a 2001 4.7 & my idle does the same ,but "hit from behind effect" is some other problem . when i come to a complete stop sometimes it feels like someone bumps me.the idle on the other-hand though does dip down & stumbles,but not all the time & my truck has never died.
|
Pippy
Dodge Dakota
10/18/2001
09:14:49
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
Well I have put 300 miles on my Dakota, since the fuel system cleaner was used. The problem has returned!!! I guess I got a little anxious when the truck was running well after the cleaner was used.
The only thing that I noticed was the temperature dropped about 15 degree when I used the cleaner. Now the temperature has rose 15 degree (to 65) and the problem returned.
I hope I didn't give to much false hope, as I was really excited.
I guess I will try the JET STAGE 2 chip. Steve can you provide more info on your exact problem and where you purchased the chip:? Info on exact RPM numbers before and after would be great. It seems if I can just get the in gear idle up to about 700rpm the truck runs fine.
You can e-mail my personal address if you like.
THANKS EVERYONE.
|
tad w
Dodge Dakota
11/06/2001
17:51:27
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
THe "bumping from behind" is most likely your tranny shifting down.
|
ERic
Dodge Dakota
11/20/2001
07:39:56
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
i have the same prob with my 99 dakota i took it in for a coplete tune up at the dealer and it still does the same thing. its really getting on my nerves too. i feel your pain
|
Mike K
Dodge Dakota
12/14/2001
15:21:55
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
Have 2001 Durango. 3k Miles on it...4.7L 2wd....Same idle issues, same "bump" from behind.
|
DASMAN
Dodge Dakota
12/19/2001
17:23:21
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I have a 00' with the 4.7 and it has died a few times when the weather is just right. Other times it just acts like it is going to die when it is first started up after sitting for about 6 to 8 hours. Has anyone else had this problem?
|
ZenDak
Dodge Dakota
12/20/2001
17:35:09
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
My '01 4.7 "get's hit from behind" on the way home from work every day that it's cool outside. It will dip down to around 400 rpm or so, and then jump up. Really scares the crap out of me for some reason,,,I'm about to take mine in too! sux.
|
Dan Craycraft
Dodge Dakota
12/21/2001
21:09:20
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I've had the problem discussed here since my truck was new. The Dodge dealer did little to help, they changed more parts than anyone can imagine but nothing fixed the problem. I finally took it to the Jeep dealer who works on my 93 Grand Cherokee 5.2 but also has a year more experience with the 4.7. They fixed my problem at 35,000 miles under warranty. The sticker on my hood says part number 56040429-AH was used. The tech told me the basic problem is the software purges the evap canister at this point in the driving cycle and is expecting a richer mixture due to the purge but the canister is not providing that boost in fuel (vapors) that the DC engineers expected. That means the engine goes lean and stumbles - or stalls. I have not had a stall since the upgrade. I actually think the purge is now when you are moving but are off the gas.
The feeling of being bumped from behind is likely due to the A/C compressor cycling on while stopped. The A/C idle is about 50-100 RPM high than the non-A/C idle. The increase is enough to feel like you got bumped.
|
Mellinger
Dodge Dakota
12/24/2001
11:12:30
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I have a 2001 Dodge Durango 4.7 engine with the same idleing problems. There is no constant idleing point, it ranges from 350 RPM's to 800 RPM's and stalls once in a great while. Both five star dealerships i've taken it to (VA Beach Dodge and Green Gifford Dodge)says it's normal for it to do that and the stalling won't be fixed unless it stalls for them. Also have had electrical problems, when engageing turn signals four ways would flash. I had taken it to VA Beach Dodge four times before it was finally fixed, it sat at the dealership for weeks. Chrysler offers lousy service and bad management! This Durango was a bad buy, I will never buy another Chrysler product again.
|
Dave
Dodge Dakota
1/02/2002
12:09:46
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I've had the "Bump from behind" problem off and on since new in my 98 QC 4x4 3.9L(5 speed, no Air), Id be interested to know of a solution (obviously the Tranny Downshift & A/C Motor are not a factor in my case). Thanks
|
Tad_W
Dodge Dakota
1/03/2002
13:25:07
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
Dan Craycroft,
Do you have a TSB number for the fix they did on your Jeep? Do you think this same part would be replaceable on a 2000 Dakota? Ours does not always idle well (sometimes stalls out) when first start in the morning in the summer and winter. Actually, the problem seemed worse in the summer.
2000 4x4 sport QCab 4.7 auto-tran
|
GreenoDak
Dodge Dakota
1/06/2002
12:03:37
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
UPDATE:
I originally started this post and got some news. The dealer offers a SOFTWARE UPGRADE for I know the 2000 4.7 computers. Now some guys think it decreases HP but I have yet to notice a difference except for a higher, in drive, warm idle raised from 500 rpm to 625, no stalling, smoother idle. No negative effects. They also cleaned the TB, removed and replaced it. THis software upgrade was a result of complaints from owners. If you are having a problem like I was (stalling at cold startup, especially if you have an remote starter, bump from behind), I would get this done. Hope this helps
|
Tad_W
Dodge Dakota
1/06/2002
14:59:38
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
My idle has always been at 600 to 750 rpm and still stalls out sometimes when cold start. We got our dak as a 2000 at the end of the year 2000. I am assuming it was made with the software upgrade but this may be the wrong assumption. Still have the idle problem sometimes when start in the morning. I am going to clean the throttle body soon and see if that works.
2000 Qcab sport 4x4 4.7 auto tran
|
Mike
Dodge Dakota
1/06/2002
19:57:11
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
If I am correct, the software flash you are speaking of is not yet approved for use in California.
|
Tad_W
Dodge Dakota
JOIN HERE
1/10/2002
12:06:58
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
Has anyone had success in restoring good idleand no stalling by cleaning the TB and IAC??
2000 sport 4x4 QC 4.7 auto tran
|
ERIC
Dodge Dakota
JOIN HERE
1/24/2002
14:58:25
|  RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I HAVE A 2002 4.7 SAME THING STUMBLES AND HAS DIED ON ME ONCE PRAY FOR A GOOD REBURN ON THE ECM
|
Jeff D
Dodge Dakota
JOIN HERE
1/28/2002
23:33:38
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I have a '92 club cab V6 and the stumbling was happening from early on. It mostly happened when going from highway cruising to a stop, like the TB was having problems adjusting. I found that some fuel injector cleaner, a little throttle body cleaning and disconnecting the battery for a while to reset things would usually do the trick. I haven't had that problem for a while now
|
Tad_w
Dodge Dakota
JOIN HERE
1/29/2002
14:21:01
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I took off the throttle body and the lower doohicky (IAC?) on the right side of the throttle body. Talk about gunked up. Cleaned it all with STP throttle body cleaner, a clean cloth and qtips. No more idle problem or stalling on cold starts. If you go to the Speedtweaks website, they have a link for "helpful hints." Tells how to remove throttle body and other part. Dealer wanted to charge $105 for the cleaning. took me less than half an hour. I am a novice with limited tools and limited skills so anybody should be able to try this before considering PCM reprogramming, etc.
2000 sport QC 4x4 4.7L autotran
|
CHRIS_R
Dodge Dakota
JOIN HERE
2/06/2002
21:56:33
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
Guys, the bump you keep feeling at stoplights is the fuel in the tank shifting. It only happens with a near-full tank, so you won't feel it all the time. It took me a little while to figure this one out.
I have the stumbling idle in my '01 QC as well. I have the 5-speed. It is kind of scary because on a certain very large hill I like to put it in neutral and just glide down to save gas, and when I push in the clutch the thing drops to about 300 rpms then bounces back to 1000 and stays there. Weird. It has NEVER stalled on me though.
|
Duran
Dodge Dakota
JOIN HERE
2/09/2002
21:35:55
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
I have a 2000 4x2 4.7 with 26,000 miles and I'v been having the same problem with rough idle and stalling.the first time i took it back they said that there was a service bulltin (tsb pcm#56040430)marked under the hood since then I have sent it back 4 more times with no luck . I also noticed in 2000 mopar catalog they listed a performance computer for the 4.7 4x2 but in the 2002 it does not list a part# It maybe a typo or the might no of a problem.
|
Scott
Dodge Dakota
JOIN HERE
2/13/2002
08:43:47
| RE: Intermittent Idle Stumbling!!!
IP: Logged
Message:
Yep,the feeling like being hit from behind is definitely the fuel in the tank shifting.Mine does it right about at 3/4 of a tank.I've never taken it in to have fixed,if you're easy on the brakes you won't get the slam.They must have wanted to cut costs and forgot to put baffles in the fuel tank to keep it from doing this
|
| | P 1 Next Page>> |
