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"Surging" #452253
08/28/09 12:11 AM
08/28/09 12:11 AM

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I have a 2004 Ram 1500 4X4 with the 4.7 ltr motor. 79200 miles. Also it has a MagnaFlo filter going right to the intake. (like a K&N filter) It is clean.
It has just started "surging" (cold or hot) when I start the truck. Surges when I stop at lights too. From 600 rpm tp 1100 rpm.
Any ideas before I take it to the dealer and get raped?
Thanks in advanced.
Steve

Last edited by trucked1; 08/28/09 12:19 AM.
Re: "Surging" #452254
08/28/09 12:18 AM
08/28/09 12:18 AM
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Florida STAYcation
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any codes come up ?

Re: "Surging" [Re: dOoC] #452255
08/28/09 12:22 AM
08/28/09 12:22 AM

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Doc, I haven't taken it to the shop yet. I don't have the computer myself. The shop wants $40.00 to put it on the "puter". Guess I'll have to go do it huh? Thought there might be a quick resolve to it. "yeah right"?

Re: "Surging" #452256
08/28/09 12:27 AM
08/28/09 12:27 AM
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Not2farfromNashville, TN
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Get any oil from the filter on any of the sensors?


"The only thing to do for triumph of evil is for good men to do nothing"

"NUNQUAM NON PARATUS!"
Re: "Surging" [Re: Rug_Trucker] #452257
08/28/09 12:30 AM
08/28/09 12:30 AM

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Hey Rug-trucker, no oil on ANY sensors at all. Truck is completely dry on top and bottom of motor.

Re: "Surging" #452258
08/28/09 12:32 AM
08/28/09 12:32 AM
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Do you know how to do the 3-key-on&offs to get a code ?

Re: "Surging" #452259
08/28/09 12:34 AM
08/28/09 12:34 AM
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Not2farfromNashville, TN
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Quote:

Hey Rug-trucker, no oil on ANY sensors at all. Truck is completely dry on top and bottom of motor.




What I was refering to is if it is a oil/K&N type filter they can get oil on the sensors in the throttle body. Causing a lean condition.


"The only thing to do for triumph of evil is for good men to do nothing"

"NUNQUAM NON PARATUS!"
Re: "Surging" [Re: Rug_Trucker] #452260
08/28/09 12:38 AM
08/28/09 12:38 AM

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Oh, I know what you mean now. No oil in throttle body at all. Took off tube and checked this afternoon. I just blew out the filter yesterday and did not ad any extra oil to it. There was not a lot on it anyway. I just oil it enough to coat it. Not enough to suck down inside anyway. Could it be a stuck injector maybe?

Re: "Surging" #452261
08/28/09 12:54 AM
08/28/09 12:54 AM
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Is the check engine light on?

Re: "Surging" [Re: Sub95] #452262
08/28/09 12:56 AM
08/28/09 12:56 AM

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engine light has never been on. No warning lights at all on dashboard. Just the surging.

Re: "Surging" #452263
08/28/09 01:00 AM
08/28/09 01:00 AM
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look for a vacum leak.

If you have no check engine light on, it has nothing to do with sensors.

Re: "Surging" [Re: Sub95] #452264
08/28/09 01:05 AM
08/28/09 01:05 AM

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Will check it out in the a.m. after dropping daughter off at school. Hmmmm. Didn't think of that at all. Although I'll bet it is and injector stuck. Tried 2 bottles of fuel cleaner. Didn't do anything.

Re: "Surging" #452265
08/28/09 01:08 AM
08/28/09 01:08 AM
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injectors are hard to plug up, plus the pulse width/AF should set a code

Re: "Surging" #452266
08/28/09 01:09 AM
08/28/09 01:09 AM
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I know other engines have an Idle Air Control solenoid that allows air past the throttle plate at idle. When they get gummed up the idle bounces around just like you're experiencing. The fix is to find and clean it (it's usually on the throttle body).

No idea if these engines have it or where it is, but figured I'd throw it out there


If you ever find yourself in a fair fight, your tactics suck.
Re: "Surging" [Re: hooziewhatsit] #452267
08/28/09 09:30 AM
08/28/09 09:30 AM
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jamestown, ny
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Quote:

I know other engines have an Idle Air Control solenoid that allows air past the throttle plate at idle. When they get gummed up the idle bounces around just like you're experiencing. The fix is to find and clean it (it's usually on the throttle body).

No idea if these engines have it or where it is, but figured I'd throw it out there




i have had that problem myself on a chebby lumina. i drive a ferd windstar as a work vehicle, that surges when the a/c or defrosters are on. clutch cycle switch is bad.


71 scamp big block with 915 heads 727 trans
Re: "Surging" #452268
08/28/09 11:12 AM
08/28/09 11:12 AM
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Quote:

I have a 2004 Ram 1500 4X4 with the 4.7 ltr motor. 79200 miles. Also it has a MagnaFlo filter going right to the intake. (like a K&N filter) It is clean.
It has just started "surging" (cold or hot) when I start the truck. Surges when I stop at lights too. From 600 rpm tp 1100 rpm.
Any ideas before I take it to the dealer and get raped?
Thanks in advanced.
Steve




My 2000 Dakota (4.7) used to do this when the O2s went bad but I believe it threw a code when it did.

Re: "Surging" [Re: dOoC] #452269
08/29/09 10:44 PM
08/29/09 10:44 PM

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No Doc I sure don't. Have new problem now. Yesterday I pulled the "Mac" air filter off and cleaned and oiled it. (lightly oiled) The truck idled great without the filter on. Cold.
Then I replaced the filter. Almost immediately the temp guage started going up. After about 2 minutes it was all the way over on hot. BUT NO BOIL OVER. Even the reservior was NOT boiling over. I am going to have it towed to the dealer. Don't want to take chance of overheating on way over there. ANY MORE IDEAS FELLAS/GIRLS?

Last edited by trucked1; 08/29/09 10:51 PM.






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