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Sputtering at sustained speed

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Old Jul 8, 2003 | 09:32 AM
  #1  
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Sputtering at sustained speed

hello, i have a 98 ranger 3.0 V6 w/ 69,000 miles on it. it has just recently started to sputter or jump when i get into 3rd or 4th gear and sustain the speed, usually around 30-35 mph. i'm thinking it could be the plugs or the O2 sensor? Any help.
Thanks
Frank
 
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Old Jul 8, 2003 | 09:52 AM
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Sputtering at sustained speed

Welcome to FTE!!!

Do you have the check engine light on at any time. The plugs/wires should be good, you could try clean the throttle body and MAF.
 
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Old Jul 8, 2003 | 10:16 AM
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Sputtering at sustained speed

The check engine light hasn't came on at anytime. Is the cleaning an extensive project or a fairly easy one.
Thanks for the help
Frank
 
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Old Jul 8, 2003 | 10:53 AM
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Sputtering at sustained speed

Should be easy, check out the tech info post rockledge has over at our 3.0 forum, he has some links that I have not added to the tech info here.
 
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Old Jul 8, 2003 | 12:28 PM
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Sputtering at sustained speed

Ken thanks for the info. I am going to clean both this evening, hopefully it will do the trick. I think i will replace the spark plugs as well, just to do it. I'll let you know how things went, and if it stopped the purging and sputtering.
thanks again
Frank
 
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Old Jul 8, 2003 | 03:51 PM
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Sputtering at sustained speed

Make sure you go with Motorcraft double platinum plugs if you can, I think they are the best and the double platinum is needed for the DIS ignition system.
 
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Old Jul 8, 2003 | 03:51 PM
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Sputtering at sustained speed

I just got into my truck to leave work and the Check Engine light was on. I'm not sure if this changes things or not?
Frank
 
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Old Jul 8, 2003 | 04:06 PM
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Sputtering at sustained speed

I would still do the cleaning stuff and then disconnect the negative battery for 15 minutes, this reset the PCM. Then see if the CEL comes back, if it does see if a local parts store (auto zone) will pull the codes and let us know what you get.
 
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Old Jul 8, 2003 | 05:11 PM
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Sputtering at sustained speed

I am going to start the cleaning, but I was still a bit hesitant and have just a couple more questions. I know I unplug the wiring from the MAF sensor, do i do the same for the body throttle? And the MAF has a black plastic thingy on one of the star's, should I just pop that off? Thanks for the help, and I'll let you know how it came out.
Frank
 
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Old Jul 8, 2003 | 06:37 PM
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Sputtering at sustained speed

My MAF screws don't have a plug on them, I would just they just pop out. Be VERY VERY careful with the sensor.

I don't think you need to disconnect anything on the TB. Did you read both threads, there seemed to be a bunch of good info there.
 
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Old Jul 13, 2003 | 02:50 PM
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Sputtering at sustained speed

Hello...i took it to a mechanic to get the diagnostics. The only thing that came back were some ERG or EGR codes. It wouldn't let him run the self test either. He said there was probably a piece of carbon stuck in and its not letting it shut all the way, for the air to go through. im takin it back in monday to see if that is all that is wrong w/ it.
frank
 
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Old Jul 14, 2003 | 08:18 AM
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Sputtering at sustained speed

Incorrect EGR flow might be causing the sputter. The most common failure is the DPFE sensor, its on the front of the intake.
 
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Old Jul 16, 2003 | 12:15 PM
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Sputtering at sustained speed

it is the egr valve....the mechanic i go to is really far behind on diagnostics so he cant get me in. its either the passage to it, maybe clogged w/ a piece of carbon or something, or it is one of the sensors? i would like to try to clean this out myself. is this a complicated project?
frank
 
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Old Jul 16, 2003 | 12:29 PM
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Sputtering at sustained speed

Hope these help.


«2000 Ranger Table of Contents»
«Group 3: Powertrain»
«Section 303-08: ENGINE EMISSION CONTROL»
«REMOVAL AND INSTALLATION»


EGR Valve — 3.0L


Removal and Installation

µ 1. Loosen the nut from the bottom of the EGR valve (9D475).

µ 2. Remove the vacuum line from the top of the EGR valve.

µ 3. Remove the two bolts and the EGR valve.

4. Note:
Use a new gasket when installing the EGR valve.

To install, reverse the removal procedure.


«2000 Ranger Table of Contents»
«Group 3: Powertrain»
«Section 303-08: ENGINE EMISSION CONTROL»
«REMOVAL AND INSTALLATION»


EGR Valve Tube — 3.0L


Removal and Installation

µ 1. Loosen the tube nut from the bottom of the EGR valve (9D475).

µ 2. Remove the nut at the exhaust manifold (9430).

µ 3. Remove the two pressure feedback lines from the line fittings and remove the EGR valve to exhaust manifold tube (9D477) from the vehicle.

4. To install, reverse the removal procedure.
 
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Old Jul 18, 2003 | 10:51 AM
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Sputtering at sustained speed

can the EGR valve and vacuum lines be cleaned after removal, or must they all be replaced?
 
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