WIFEY HAS A 2003 W/ A 3.0L
THIS WAS AN ISSUE WITH HER'S THAT I WORKED ON HITHER AND YON, FOR MONTHS
I PROMISED MYSELF, I WOULD FIGURE OUT THE CYBER CONTROLLED CRITTER WITHOUT THE HELP OF A "PAY MECHANIC". TECHNOLOGY HAS WENT OVERBOARD.I'LL KEEP MY 2 JEEPS 35 AND 66 YEARS YOUNG
Reckon my symptoms are sorta the same as yours?
I had input from here also. Ended differently
Disregard all of this, if we're not on the same country road
Thought I'd sling it out there, for observation anyway. Open for any questions with mine. Hope it's simpler than mine!
I Went thru same deal w/ '03 Ford Escape 3.0 V-6
Repetitive, fast hesitations (stumbles), lasting 1-2 seconds, varied in how far the "sets" were apart, it was more evident climbing a incline, while slowly administering gas. Random or none on level ground. Every now and again at idle, but very seldom.
---No codes/ No CEL --- (cleaned 1st, and/ or replaced the following
New Plugs. Then "genuine plugs". Bah-Hum-bug, nothing wrong with the other new ones, I just installed!
Boots and springs
A new IAC for Sheets & Giggles!. Prevent-Maint. If for nothing else
Performed Mega Vacuum leak searches several times.
Fought with wife many times over situation, 2+ months!
I really hated taking off the "Plenum" so many times to access the other 3 cylinders
Each part seem to fix it for a day or two.I did not mind replacing the suggested parts, as I am all for "PM" and she's got 100,000 miles on her rig.
The final cure was #3 misfiring (lucked into the correct cylinder) I was gonna swap a new coil pack down the line, till it stopped
#3 was the ticket!
I had tried to get the Technical school to ride me with their portable machine---things did not work out, with their schedule.
I went to a salvage yard to get a used pack ($10) to swap around to figure out which was bad, then buy a new one, if the "donor pack" solved the problem.
So happened, the salvage yard guy had a machine, he found a stored code, it said #3 had misfired. My little code scanner could not tell me that.I think his was a "Snap On"
Runs perfect now, with the New $79 Coil Pack!
IF IT HAD NOT BEEN FOR THE STORED CODE, I WAS GONNA "ONE AT A TIME" SWAP THE COIL W/ THE 1ST EZ 3 TO FIND THE MISFIRING ONE. IF IT HAPPENED TO BE ONE UNDER THE "PLASTIC PLENUM"
THE PLAN WAS TO TAKE OFF AND REPLACE THE PLENUM ONE TIME ONLY!---BUT SWAP THE "3 GOOD" FRONT COIL PACKS TO THE REAR. THEN "TEST" THE 3 EZ FRONT ONES (RELOCATED FROM REAR) ONE AT A TIME WITH THE "DONOR COIL PACK"
THE STORED CODE MADE IT EZ ON ME, LOCATING THE BAD PACK
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Wednesday, August 29th, 2012 AT 3:00 AM